Tag: Health

3D Printing Technology Safety

A number of people have written to comment about the Thinking About 3D Printing Technology post. Obviously, I still have a lot to learn about this technology and some of your questions have taken me quite by surprise (I’ll address some of them later, after I have conducted more research). I always appreciate it when you make me think through the topics I post because the conclusions I reach often make great fodder for book topics.

The one question that didn’t take me by surprise was one of safety. After all, it’s important to know that the output you create is safe. At the time I wrote that post, there was little on the topic of safety, which is why I didn’t include any sort of safety information. A recent article entitled, “3D-Printed Medical Devices Spark FDA Evaluation” tells that the issue of safety is on a lot of other people’s minds as well. The problem for the FDA is that it can’t actually test a printed medical device in any meaningful way and still allow a hospital to use the device in a reasonable time frame (such as in an emergency room), so it allows use of these printed devices on the basis of similarity to devices it has tested thoroughly. In other words, the printed output must match an existing device, except that it provides a custom fit for a particular patient.

I thought about that article for quite some time. It seems to tell me that the FDA is reviewing the issue of safety, but hasn’t come to any final conclusions yet. What I’m trying to do is weigh articles like this one against other articles that decry the complexity and problems of using 3D printing technology. For example, 3D printing: Don’t believe the hype states outright that many of the plastics used for 3D printers aren’t even food safe. I’m assuming that the FDA requires hospitals that rely on this technology to use the correct, safe, materials. Even so, the article does make one wonder about the safety of the materials provided for consumer-level products. Not many people will be able to afford a hospital grade device.

Safety extends beyond the end product, however, and this is where a true scarcity of information occurs. For example, when you melt some plastics, the process produces Hydrogen Cyanide (HCN), which is an extremely dangerous gas. I thought it fortunate that I found an article on the topic entitled, “Is 3D Printing Safe?” The short answer to seems to be yes, 3D printing is relatively safe, but you’ll want to ensure you have proper ventilation when doing so.

This whole issue of safety does concern me because new technologies often have hidden safety issues that are later corrected after someone encounters them (usually with unfortunate results). Like any tool, a 3D printer isn’t a toy—it is a device for creating some type of specific output. For the most part, I’d recommend against letting children use such a device without parental supervision (preferably by a parent who has actually read the manual).  I’d like to hear more of your concerns about 3D printing at [email protected].

 

Thinking About 3D Printing Technology

Any Star Trek fan will tell you that the replicator technology shown in the show is treated as an ordinary occurrence that isn’t so ordinary today. In fact, a number of the ordinary objects, such as communicators, in the show have become reality and some of them are becoming so common that they’re ordinary to us too. Compare a smartphone to a communicator and you realize that the Star Trek creators didn’t actually go far enough-smartphones are actually a lot better than communicators. This makes me wonder if 3D printers might become the replicators of the future.

If you’ve been reading any of the tech blogs lately, those like https://www.semerika.com/, you’ll know that there has been a lot of news lately about three-dimensional (3D) printing technology. The idea behind the technology is simultaneously easy and complex. The simple part is that a printer adds layer upon layer of one or more substances to create some type of object. The object is described as part of a drawing. Of course, the drawing must indicate all sorts of things in addition to the overall appearance of the 3D object, including which substances to use and what color to make them as needed. Creating a precise description of everything needed to create a real world object can be a complex undertaking and some objects defy simple description.

As with any new technology, 3D printing has plenty of hype surrounding it (such as the printer being able to pay for itself in as little as a year). In fact, hype is a problem because it builds unrealistic expectations. Anything you read about 3D printing today is in an experimental stage for the most part. John Dvorak explores the problems with the hype in his post, “Enough With the 3D Printer Hype Already.” Yes, creating a gun using a 3D printer is doable, but result isn’t really usable today (tomorrow may be another story). However, I get the feeling that many detractors haven’t read quite as much as they should before making a judgement about 3D printing and the sorts of things it can do.

There are other uses for 3D printing that only large organizations can afford. For example, I read about the use of 3D printing technology to create artificial reefs in the August edition of National Geographic (in the Next section). The printer is the size of a house and produces an 1,100 pound result that really isn’t in the realm of something that most people would want to create. However, it’s a useful output of 3D printing technology that is in use today. In fact, there are many uses for 3D printing today, but it’s important to remember that this technology is in its infancy.

Although many of the uses for 3D printing that you read about are for common objects that we can produce less expensively and with greater precision using other technologies, it’s the uses that aren’t available today that intrigue me most. For example, you can use a 3D printer to create a tiny lithium battery. This battery is the size of a grain of sand. You might wonder where a battery like that might see use. Of course, use in spy gear comes to mind immediately, but a more productive use is in medical equipment where battery size is currently a problem.

In fact, for now at least, the main practical area of 3D printing may be for medical use. There was a recent story that talked about doctors printing an emergency airway tube to save a baby’s life. What most people don’t realize is that hospitals don’t typically carry standard airway tubes in the right size for infants because the number of sizes needed would be quite large. In this case, printing proved to be the only practical way to create an airway tube sized for this particular child.

Of course, not every medical use will save lives in such a dramatic fashion. Many uses will be more mundane. For example, a doctor could print a new ear or a new bone for you when needed. Some of the medical techniques use cells from a person’s own body, which makes the risk of rejection quite small. However, even these articles state that this particular use of 3D printing technology is still experimental. The point though is that the technology is being tried in these areas and the result is something that you can’t easily manufacture.

Creating objects using 3D printers is a reality. The cost of those printers is also decreasing in at least some cases. However, the technology is still quite new and you need to take what you read with a grain of salt. Eventually, you’ll likely see 3D printer technology used in a way that makes those replicators on the Enterprise pale by comparison. Let me know your thoughts about 3D printing technology at [email protected].

 

Social Media Overload?

Because of my involvement in the computer industry, I’m always interested in social, health, monetary, and other effects of using technology. As with any other tool (and technology is a kind of tool), it’s possible to misuse computers and the software that controls them. In this case, I’m talking about any sort of device with a chip inside, including tablets and smartphones. In fact, I’m even including your television and radio here. Every electronic device you own is a kind of tool. Think about it, the main reason to listen to radio is to help you relax or to inform you in some way. When people stop viewing technology as a tool and start viewing it as a requirement for living, the technology becomes a crutch and the person becomes addicted.

I read a post the other day by someone who is obviously addicted to her technology. I found the article, “Social Media Overload” enlightening because it presents a perspective of social media from someone who is younger than me and has likely grown up with the technology. The author talks about having thousands of online friends and some social media users even buy Insta followers and Twitter followers. Of course, my question is whether it’s possible to actually know anything substantial about thousands of people. There are only around 400 people in our small town and I admit to not knowing them all; actually knowing thousands of people seems quite impossible. In fact, it’s hard to know whether some of these people even exist or they’re the figment of someone’s imagination. Using social media in this way seems to favor quantity over quality, where the quality would be incredibly low. It makes me wonder what has happened to the quality relationship of the past. Having thousands of meaningful followers is something that seems more attainable for businesses, organizations, or influencers who have attracted many people to view and consume their content, rather than maintain personal relationships. Utilizing a tool like Nitreo on a platform such as Instagram can help such operations grow their followers (and thus their influence) organically, allowing them to reach more people who will actually care about the things that they do, rather than have followers for followers’ sake.

The part of the post that I found most interesting was the fact that she recommends providing a means to link all of the social media together so that you could view and update all of your information from a central location. The obvious problem seems to elude her-recognizing that the tool has taken over the master and that the master is now the slave of the tool. When you start having to think of ways to manage all of the tools in your inventory, rather than using those tools to perform useful work, the tools have become a problem. It really is time to clear away a bit of the junk so that you can become productive again. A better solution might be to reduce the number of social media in which she participates so that the tool again becomes a tool. She did point out that reducing on social media was tough, and could be tougher for people who believe that they can’t live without. I mean just look at these internet statisitcs and data trends, it is quite clear that we are completely involved with our social media.

I do participate in social media. I’m currently on LinkedIn because it’s a professional network and I feel it’s a good way to get my resume out in public view. Sometimes I provide updates about my current projects. Otherwise, I really don’t see a good reason to use social media when personal contact is so much better. You have to ask yourself whether you’re in charge of your social media or whether the social media is in charge of you. The one exception I have is making adorable TikTok videos with my little daughter. I even buy real Tiktok views to make her feel like the superstar she is! Other than this, my use of social media is very limited.

Like any professional, I put my tools away on occasion and go on vacation. It’s important to rest from your labors so that you can better enjoy them when you do work. I’ve written about my philosophy toward computing in Learning to Unplug. However, it’s important to think about how other professionals use tools when thinking about social media or anything else to do with computers for that matter. Can you imagine a surgeon taking scalpels and performing impromptu surgeries while on vacation? What would you think of a carpenter who takes hammer and nails absolutely everywhere? After all, you never know when you might want to pound a nail or two. This is how I view people who are so addicted to their technology that they can never unplug from it. If you can’t put your technology aside long enough to rest, then you’re addicted and need to do something about it.

How do you view computing, especially when it comes to social media? Has your computing device (no matter what that device might be) come to rule over you? Let me know your thoughts on digital addiction at [email protected].

Vacation Time Again!

Today is my last day in the office for a little over two weeks. Of course, I’ll still be doing quite a lot, but it won’t be in the office. I’ll see you again on July 15th. In the meantime, it’s time to rest for a while and recharge my batteries so I can continue to do a great job helping you with various technology and self-sufficiency issues. I’ve written about the need to unplug before and I highly recommend that everyone do it from time-to-time. Life is too short to spend all of it in front of a computer monitor .

In the meantime, if you do encounter problems with one of my books, please be sure to check the blog posts I’ve provided. Each one of my current books has its own category with a number of helpful posts about issues readers have encountered. If the posts don’t quite do it for you, be assured that I’ll start reviewing and answering e-mail the moment I return. I want to be sure you have a great reading experience and discover as much as you can.

While you’re reading, I’ll be fishing and gardening (amongst other things). There will be a picnic or two and barbecuing every day. The annual puzzle is a big event (and I may actually review the puzzle when I get back). Most of all, I’ll spend the time with my lovely wife, and that’s the most important part of all.

 

Bounty and Beauty in the Woods

Anyone who knows me knows that I spend a lot of time in the woods. There is always something to see there, even in the dead of winter. In reality, there is quite a lot to see that you’ll never find unless you know where to look. Some hidden items bespeak the bounty of the woods, while others tell of the beauty you can encounter there.

Recently I went up into the woods to look for morel mushrooms. Our damp, cool spring seems to have produced a bumper crop of them. In fact, normally I find just a few, but this year we ended up with a bowl full of them. What surprised me most what the size of these mushrooms, they were a lot larger than usual. Here are a few of the larger ones I found:

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Fortunately, size doesn’t diminish the wonderful taste of these mushrooms; you just get more of a good thing. Rebecca fixed them up with a roast, which was absolutely delicious. The mushroom season is extended this year and I hope to find a few remaining morels on a venture into the woods today (weather permitting, of course).

Sometimes beauty is also hidden. While wandering through the woods, I noted our may apples (sometimes spelled as mayapple, without the space) are up for the year. When you walk through the woods, you see a nondescript bit of vegetation that is slightly reminiscent of palm trees when viewed closely. Some plants have one leaf (first year) and some two leaves (second year). The second year plants will produce a beautiful blossom (just one). I picked one for my lovely bride to enjoy as shown here:

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The single flower has an extremely light, but pleasant smell. The may apple is actually a useful plant, but most people haven’t even heard of it. The leaves, when boiled, produce a natural insecticide that you can spray on a variety of plants. The insecticide washes off cleanly with the next rain. You can also dip seeds in it to prevent a variety of problems.

The native Americans used the may apple root as a medication. It’s used as a laxative and also a purgative. In fact, it may surprise you to find that some modern medications, such as podophyllin, also rely on the may apple.

There is some discussion about the fruit because most people have no clue as to when to pick and eat it. The fruit must ripen on the plant or else you’ll get poisoned (not enough to die, but you’ll wish you had). It has a subtly lemon taste and is absolutely delicious. Most sites tell you not to eat the seeds, which is good advice. The seeds won’t make you sick, but they do tend to have a laxative effect when you eat enough of them.

This is also the season for springtime flowers. While the may apple might be a little on the self-conscious side, most flowers are quite showy. This year we’ve been blessed with an abundance of cranesbill geranium as shown here.

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Most of these patches are relatively large and the flowers are knee deep (sometimes deeper). Our moist, cool spring seems to have brought out more than the usual number of these delightful flowers and it’s hard to go very far without seeing a patch of them. They do spring up each year, but this year’s display is astounding. The eye catching beauty of this group of flowers hides the may apples and other plants that are also part of the picture.

The woods tends to hide things from the casual visitor and the presence of showy displays tends to make discrete displays even harder to find. In order to see both the bounty and the beauty, you must look—really look—to see all that resides within. Let me know about your latest experience in the woods at [email protected].

 

Cleaning Substitute

I’ve received a number of positive comments about the Using a Bleach Substitute post I provided a little over a month ago. The bleach substitute is somewhat potent and there are some negative issues with paracetic acid (although, far fewer than when using bleach). The main reason to use the bleach substitute is as an antibacterial. You use it on surfaces that you must keep bacteria free and are subject to contamination from various sources. The actual amount of paracetic acid in the bleach substitute I provided is quite small, but still, any amount does present hazards, so one of the most commonly asked questions is whether there is an alternative.

You can create a simple relatively non-toxic cleaner using 2 cups of water, 2 tsp of borax, and 2 tsp of white vinegar. However, enough borax (a naturally occurring mineral) will still cause some level of respiratory problems. Theoretically, you could eat enough of it to cause a number of negative symptoms or even cause death, but you’d have to eat quite a lot of it. In fact, borax is used as a food preservative in many countries (albeit, not in the United States). Borax is relatively benign as far as cleaning agents are concerned, but you must still treat it with respect.

This cleaning agent can be kept in a spray bottle beneath the sink because the amount of problematic agents is so small. You’ll find that it does an admirable job of cleaning surfaces and won’t cause any damage to metal surfaces. However, you’ll have to deal with the after effects of the vinegar smell, which does go away relatively fast. Some people recommend using essential oils to control the smell. However, if you add 6 or 7 drops of essential oil to the mixture, it may smell better, but now you have to consider the toxicity of the essential oil. If you choose to add an essential oil, make sure that you obtain a pure oil from a non-toxic source such as peppermint or orange.

Never mix the bleach substitute that I told you about with this cleaning substitute. In fact, mixing cleaners of any sort can cause all sorts of woe (up to and including death). Just as you would never mix bleach with ammonia (the resulting gas will kill you), you shouldn’t mix anything else unless you have a recipe for doing so. Let me know if you have any other questions regarding cleaning substitutes at [email protected].

 

Using a Bleach Substitute

I have become a label commando in recent years. People actually become quite disturbed waiting for me to finish my latest epic reading of a cleaning product or food label. I read everything, including the list of ingredients when I can find one. More importantly, I look for what’s missing on the label. For example, I’m surprised at how many margarine labels refuse to tell me that they don’t contain any cholesterol. Lest you think this is one of those odd fetish requirements-some fish oil tablets actually contain cholesterol. We pay the extra to buy a product that’s labeled cholesterol free (and yes, it does make a difference when the doctor tests your cholesterol).

So I was taken by surprise recently when I read a bleach label. The stuff should be labeled toxic waste and left go at that. The label told me about the dire consequences of using the product, such as permanent damage to my esophagus. Bleach is also a terrible product to use in a house with a septic system because it kills off all of the helpful bacteria in the septic tank and causes the waste to just sit there (possibly flooding your house with a really smelly mess). However, the part about not putting the empty container in the trash or in the recycle bin is what got me most. Just where was I supposed to dispose of the container? It turns out that you’re supposed to take it to a hazardous waste disposal site, at least that is according to the Control of Substances Hazardous to Health (COSHH) regulation. A product labeled hazardous waste has no place in my house. (Just consider the fact that many of the foods you buy in the store have been soaked in bleach and you don’t have to think very long about why your food is making you sick.) It made me think about what other hazardous materials around my house needed special disposal procedures and the COSHH meaning regarding these materials.

Of course, country homes require some means of keeping things clean and getting rid of bacteria, just like anyone else does. It turns out that there is a really good solution and it actually works better than bleach. Most importantly, this solution is pretty much harmless to everyone and everything. You fill up two bottles: one with vinegar and another with hydrogen peroxide. Spray a surface first with the vinegar and second with the hydrogen peroxide and you create a really effective cleaning agent called peracetic acid. The point is to keep the two components separate until you actually need to use them in order to gain a highly effective cleaner that’s a whole lot less harmful than bleach.

What impressed me most is that the combination actually works well on carpets as a stain remover. It’s also much more effective than bleach at getting bathroom grout clean and it works especially well on surfaces with small crevices. Some people do mix the two and add water for use in laundry, but keeping the two chemicals separate is the best way to avoid the potentially toxic qualities of the peracetic acid. As with any cleaner, you do want to use this one with care, but it’s frankly a lot better than using bleach. Let me know your thoughts about this interesting cleaning aid at [email protected].

 

Keeping Things Clean

Not a lot of time is spent in discussing cleanliness in many self-sufficiency texts except to say that it’s important to maintain the cleanliness of the animal enclosures to improve overall animal health and to reap the monetary benefits of doing so. It’s true, keeping the animal enclosures clean does provide these benefits. No matter what sort of animal is in your care, dog, cat, chicken, or rabbit, cleanliness is a requirement if you want to maintain their health. Unhealthy animals are a lot more expensive to keep and you won’t obtain much financial benefit from them.

A few texts will stress that animal cleanliness also produces happier animals. Animals tend not to express happiness or unhappiness in the same way that humans do. However, each of our animals does express happiness or displeasure in specific ways. Anyone can see these emotional conditions if they care to look. Animals do feel things and the need to be clean (after a certain manner) is a characteristic that they have in common with us.

However, I’ve never encountered a text that stresses that animals have a preference for being clean or that they even have the intellectual resources to determine the difference between clean and dirty. Over the years, we’ve worked hard to keep the environment our animals live in as clean as possible. During that time we’ve also noticed that the animals definitely have a desire to be clean and that they do, in fact, have the intelligence to tell the difference.

For example, one rabbit purposely chewed a hole in the side of it’s enclosure to gain access to the middle enclosure of a three rabbit hutch. It was only after I discovered an air leak in the side of the rabbit’s current enclosure and fixed the leak that the rabbit was happy to stay in the enclosure I chose for it. The rabbit was uncomfortable and determined a method for overcoming that discomfort. It’s method of addressing the problem showed a certain level of intelligence.

As another example, in cleaning the chicken’s nest box enclosure, some of the bedding gets tromped down, but is still dry and clean. We fluffed up the bedding and added a bit more to ensure the chickens comfort and to keep the eggs from breaking. Other bedding was soiled, and so we put it into the compost heap to decompose. New bedding was put in the nest boxes that had soiled bedding in them. The chickens unerringly chose the nest boxes with new bedding in which to lay their eggs. Since the chickens were outside in their run and didn’t see which nest boxes received the new bedding, we can only assume that they can smell or somehow see the difference between the new and old bedding. However, it’s important to note that they knew the difference and made a choice to use the new bedding, rather than the old, even though the old bedding is still clean and usable.

We had three cats at one point. One of the cats had become enfeebled due to old age and was sick. The other two cats would refuse to use the potty pan after the sick cat until we cleaned the potty pan up. The odor left behind by the sick cat signaled disease and the other two didn’t want to pick up. Even if the potty pan had just been cleaned, the other two would refuse to go into after the sick cat. The cats made a choice. Keeping your animal’s environment clean is, therefore, more than simply a matter of health or monetary gain. Animals are happier when you keep their environment clean and they do have the intelligence to make choices about their environment, given the chance to do so. That’s why it’s important that a pet carpet cleaner is always on hand for those pets who live inside. If they are sick or have an accident, it’s easy to use a carpet cleaner to just ensure that any stains or odors are removed from the area. This can benefit both owners and animals alike. Animals know when their environment isn’t up to par and you should too. Providing your animals with a clean environment is a responsibility that you should take seriously.

However, it’s also important to remember that animals don’t use human standards of cleanliness. The essentials are to keep the environment clean and comfortable. A rabbit or chicken is unlikely to want, need, or even accept room deodorizer or other human niceties in their environment. In fact, some human niceties (such as scents) are actually detrimental to animal health in some cases. Make sure you take an animal eye view of environment when you setup, maintain, and clean their equipment. Let me know your thoughts on animal environments at [email protected].

 

Christmas, a Time for Family

It was about this same time last year that I was preparing to shut down for the holiday season. Every year I look forward to this time of unplugging myself from all of the technology that entangles me the rest of the year. In fact, I wrote about it last year in Learning to Unplug. Taking time off provides a change of pace, makes life more enjoyable, and gives you purpose.

I was also looking over the poetry I’ve published in my blog in the past. I hope that you’re able to take time to read Christmas Remembrances and that you enjoy it as much as I enjoyed writing it. Christmas truly is a time of remembrance—a time to think of what is past, what is today, and what may come tomorrow.

For the first time in a long time, Rebecca and I will actually be able to travel a bit this holiday (day trips, but travel anyway) and we plan to see some of our family during the holiday season. It’s my sincere hope that during this time of Christmas that you’re able to spend time with family and friends—that you take time to reflect a bit and unwind from your work. If you’re traveling, as we are, please travel safely and don’t be in rush to get wherever you’re going. Your family will wait and will most definitely want you to arrive safely, even if it means arriving late.

I’ll be back online on January 3rd this year, which is a bit sooner than normal. If you send me any e-mail, please be assured that I’ll answer it as quickly as possible when I return. In the meantime, please be patient and check out the blog posts for your book. It may be that my blog already has the answer you need.

Thank you, one and all, for the support you’ve lent me this past year. Writing technical books wouldn’t be very enjoyable without caring readers. You’re the reason I continue to work as hard as I do. I look forward to working with you on some amazing new ideas this upcoming year!

 

Little Things Matter

Our holiday season is in full swing now. On Friday evening we went to town to see Living Windows. Each of the shops in the downtown area has a Christmas scene depicted in its window using people. You’re actually watching these people perform various Christmas task. Of course, there are the obvious depictions, such as decorating the tree and baking cookies. One store had something a bit unusual in that there were three children ice fishing. They were fishing from one of those large indoor fountain displays, which was decorated to look icy. Each child had his/her fishing pole with fish duly attached to the end of the line. Many of the scenes were of old fashioned Christmas seasons. A scene showing people stringing popcorn to decorate the tree brought back some pleasant childhood memories for me. It was complete with paper chains of the sort I remember making in school to decorate our tree.

The scenes in the window weren’t the only attraction. There were Christmas carolers in several locations. Rebecca and I just had to stop and listen for a bit. Some street vendors were selling items like hot chocolate and apple cider. There were many treats to eat as well. One of the shop owners was creating a long pine bough, complete with ribbons, to string across the street. There were two horse drawn wagons you could get on to take a ride. On at least one corner was a burn barrel you could use to warm yourself. Overall, it was an interesting feel of Christmas past, but also different and quite entertaining. Except for gas, we spent precisely nothing for two hours of fun.

Saturday morning found me in the kitchen with Rebecca. I had donned my cookie apron and we spent the day making sugar cookies. Of course, they all had to be decorated and no one stocks the wide array of sanding sugars, candies, jimmies, and other odd assorted decorations that Rebecca does. I made a number of reindeer, Christmas trees, wreaths, angels, bells, and gingerbread people (amongst other items). Some of the more unusual cookies included frogs and motorcycles (yes, we actually found a motorcycle-shaped cookie cutter). By Saturday afternoon the cookies were baked and packed away as gifts for various friends. I’m not sure who will receive the cookies, but I do plan to be a little bad and nibble a few. I imagine we made Christmas cookies for around twenty people for less than $20.00, but really didn’t bother to keep track—we were having far too much fun to do that.

Saturday evening was the children’s program at out church. It’s something we look forward to seeing every year. The children did especially well this year. The church was packed to standing room only status and they finally set up closed circuit television in the dining room below the main church. We’ve been told that there were well over 800 people in attendance. Even with the tightly packed crowd, everything was orderly. We could clearly hear the cherub tones coming from the front of the church, even if we couldn’t always see the cherubs themselves.

These traditions may seem like little things, but they really do matter. They help us keep focused on the meaning of Christmas. More importantly, they help keep us sane in an increasingly hostile world. We read the news, just like everyone else, but these little traditions that cost little, but mean so much, really do help keep things in perspective. I hope that you have your traditions too. Let me know about some of the things you do to keep your sanity during the holiday season at [email protected].