CML Supply Mini Micro Drill Bit Set and Pin Vise Chuck 31 pcs

Purchased these to use to clear out the fuel circuit passages in the carburetor for a Ryobi pressure washer I was working on. Once I determined the proper size I was able to clean out the crud left behind from the ethanol fuel simply by using my fingers to twist the bit. There are so many sizes included in this set.

I bought this CML Supply Mini Drill Bit Set for a pair of prescription designer sunglasses I bought online. I didn’t notice that they didn’t have the nose pad arms which I need since I don’t have much of a nose bridge.Read online that you can fix this on your own with the right tools and pieces. So I ordered the drill bit set and installed the nose pad arms myself. Really easy, the different size bits made it easy, I started small and built up in bit size so I wouldn’t make a mistake and drill too big of a hole for the anchoring pin on the nose pad arms. Took my time and they look great and feel great! Precision drill bits! Easy to use. Very thankful I am able to wear these sunglasses without having to return them or having to go somewhere and be charged a lot of money to fix an over site that was my fault. If you need some tiny drills this is the kit for you! Definitely would recommend!

I haven't had these very long so I can't say how well they hold up over time, but I figured I'd add some things I noticed.I'm making pinhole plates for pinhole cameras, so I'm mostly interested in the smallest bits. I also need them to be accurate because a difference of something like 0.001" or 0.01mm is enough to make a difference in image sharpness with precision-drilled pinholes in many cases.I put the smallest bit in a good solid micrometer outer caliper I have and it read exactly 0.013" as advertised. Note that these tiny ones are TINY. To give you some idea, the thinnest manual sewing needle I could find was wider than 0.02"/0.5mm. The smallest bit (0.013"/0.33mm) in this set is about the diameter of an acupuncture needle except that it has burrs to drill with. To handle these I use some sharp pointed tweezers with a locking collar of the sort that jewelers use to hold gemstones for inspection. I'm pretty good with my hands but it's difficult to dump out the little tube of the thinnest size bits and pick one bit out of it without dumping some of them.SO NOTE: the metric conversions given for the drill bit sizes appear to be inaccurate or maybe I should just say wrong. 0.013" is actually more like 0.33mm, and my micrometer read 0.013". So it would seem that the accurate numbers listed are the English units, not the metric ones. Therefore refer to the English numbers given and convert them to metric manually if you want to know the real diameters in mm.It's difficult if not impossible to get the really small bits perfectly centered in the pin vise, though using tweezers helps. I haven't really used a little pin vise like this before so I can't really say if this is typical, at least in this price range, or not. But to get the bits centered you might want to spend a little time adjusting them to be as centered as possible so they don't break.Notice that if you remove the nut from the pin vise you can remove the chuck, flip it around, and stick it back in the handle. This gives you a wider chuck capable of holding the larger sized bits. The nut was lubricated reasonably well as it was, but I added a bit of silicone grease to the threads and around the chuck which improved things a bit.I also carefully placed the smallest bit (0.013") in my Dremel 8000 which was installed in a Dremel 220-01 Rotary Tool Work Station (which is basically a Dremel drill press attachment) using the regular Dremel 4486 Chuck. I think I actually had an easier time centering the bit in the Dremel chuck than I did with the pin vise even though the dremel was locked into it's drill press attachment. I put the Dremel on its highest speed of about 35,000RPM and used it to drill several holes into a little patch of aluminum that I cut out of the side of a soda can. It went right through with no trouble.So I can't say for sure how well they'll hold up long term, but they look good. I just wish the pin vise did a bit better of a job helping you get small bits centered in the chuck, and it might be nice if it had a compartment in the handle for the bits. But the set comes with a nice tubular plastic box for the bits which is nice though a little less space efficient than it could be.Random related tip: For drilling small holes you can also use really thin sewing needles. Obviously they don't have the burrs for drilling, but they work for really thin soft sheets of metal like soda can foil. They work even better if you place the needle into a HSRT like a Dremel and turn it up to 30,000RPM, but I wouldn't exactly try to drill through stainless steel or anything 1" thick with such a thing. Unlike drill bits though I can put a needle in the Dremel and grind it against a sharpening stone or fine sandpaper to get it the exact diameter I want, and they're so cheap that if I ruin one it's not a huge financial loss.

I am getting back into the scale modeling hobby and had never heard of a pin vise. But, on the first model I got, it required me to open 8 little holes on the fuselage. I have a 1/4 inch drill, which I used, but this was like killing a fly with a cinder block. It worked, but probably did a little damage, too. And, it was overkill.This is a little metal tool that holds tiny drill bits and has a rotating end so you can delicately drill small holes by applying downward pressure and turning the body of the tool. Another cool use is to put a sewing needle into the collet (bit holder) and use it to scribe panel lines into the plastic for detail or to apply thin super glue with precision. I'm told you can us it to drill out the tiny barrels of canons on planes, too for more realism.If you work with small parts, or need precise detail work, this is a good tool. It comes with a lot of bits and two collets (the alternate stores in the body of the tool. All of it is packaged in a reusable, clear cylinder. Nice!

This is exactly what I was looking for when I started my search for drill bits for my Dremel Moto-tool. The bits are well machined and precision made. My only fear is that some of them are so fine that I may apply too much pressure by accident and break the bits if I'm working on a hard wood. That said, I should also say that I purchased them for what I expect will be a long-term project in Balsa wood, so I won't have to apply much pressure there. I also like that the bits come in their own little container so that I can easily transport them. The container is a bit difficult to open, and I shall be looking for a new one to take its place, but for the time being, it is very serviceable. The bits are perfect, in all the sizes I needed. I also had to purchase a set of collets so that the tiniest of these bits would be useable. I'm very pleased with this purchase.

Liked the pin vise felt good and solid. Did not like the bit selection. Instead of a good variety of bits it was three or four of the same size bits none of which where used for what I needed, but maybe I'll need them in the future.

Am impressed most with the micro drillbits included with this pin drill set. They cut through the hard plastic of HO gauge model kits better than any I have ever used. The pin drill is also easy to use though i prefer a three jaw bit in a pin drill as it is easier to center the bit. That being said the drill is well made and spins the bit true. I would buy another just to get the very high quality bits that are included. I have purchased the less expensive sets here on Amazon and the smallest bits in those sets were not sharp or beveled correctly at the tip. In summary this set though a bit more expensive will in the end be the best value. FIVE STARS ALL AROUND!!!