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Here is an interesting video on the family of inexpensive Chinese microscopes. I think he unfairly compares them to a digital camera system and lens that costs several thousand dollars. I own a DSLR with Macro lens and  lighting that I can tether to my computer using Adobe software. It works great but it is not practical for a person sharpening multiple knives or trying to run a small business. If you make your money as a content creator it may be a different story.

I like to use a Bausch & Lomb loupe for edge inspection. Cutting a thermal receipt and feeling for resistance changes gives me a pretty good indication if I got the burr removed.

https://www.youtube.com/watch?v=_K8CtSgXREk

Looks like there may have been a surge of buyers as the smaller version is not available on Amazon.

It may be due to the steel used in some less expensive knives. These knives are extremely hard to sharpen to a fine edge; the burr essentially changes sides when you try and hone it.

This is discussed in this book "Knife Deburring book Science behind the lasting razor edge" by Dr. Vadim Kraichuk who is sadly deceased.

Another thing that can be an annoyance is if you overfill the reservoir by raising the mechanism when it has water in it. If you do this and water is displaced above the line it will overflow and make a mess. Raising the mechanism is only needed when the wheel has become smaller due to truing. 

With my knives I have found that with very little effort I can bring the edge back on knives that have declined a bit with use. I use a fine grit (2,000 and 3,000 on one rod) and light passes to bring the edge back. Like with a whetstone it took some practice to get the angle right each time, I also find that speed does not help so I take it slow and try and maintain low pressure.

I rarely see any damage on the edge from use and I individually hand wash and dry all my knives. With this practice I am able to significantly extend the time between trips to the Tormek.

Thanks Rich for the reminder.

Now that the ground is not frozen and we have the new Gardening Tool section I have a question.

What approximate angle do hoes and shovels require for best performance and resistance to denting the edge?

I can't imagine the loupe is an improvement over the 2 I have that are at least 45 years old from Bausch and Lomb. I do need the MB-102 but have not got around to buying it.

Forum is still a bit wonky. Fails to load or sometimes I get a page with text links.

I would like to have one for mobile sharpening when I visit family or friends. Quite often I am asked to cook and carve and I travel with a knife roll and a second set of knives. More than not I am asked to sharpen my host's knives. Rather than carting them home it would be more convenient to set up shop and sharpen there. For my daughter I will exchange a couple from the roll and bring hers home for a fresh edge.

It is nice to have if you are making YouTube videos. Another use is if you are going after ultimate sharpness for some reason it gives you an idea of how various techniques work. Our library has a nice 3D printer and the clips for testing are only $21 a bag.

I came across an interesting video where the author 3D printed a knife and 3D media holder to make a DIY BESS tester. He bought test media clips from BESS and a $13 digital scale. The only downside is that his scale does not retain highest reading. I think for around double the price you can find a scale that holds the highest reading. He also provides the printer files. He uses an electric knife sharpener for demonstrating which is funny if he is going for a low reading. I may go to the library and have the pieces printed. Here is the video:

https://www.youtube.com/watch?v=PF_WTo-uLvg&t=360s

Glad you are on it Ken

This worked well for me:

https://forum.tormek.com/index.php/topic,5807.msg42446.html#msg42446

Sorry typo. Weekly ads. We get them from local stores in the mail. They are printed on thin newsprint. Sharp knives glide through smoothly. Use feel and hearing to detect any burr along the edge.