I need to drill very small holes (1-2mm) in crystals - Will this set do the trick?
508933
I didn't know the answer to your question because I have been using them for etching and grinding metal. So, I was curious and just now took a small piece of green calcite put it in a tray of water and successfully drilled a 1.5 mm hole in it with one of the small cylinder shaped (second from left) diamond burs from this 20 piece set. It's not super fast but it definitely works. Also, I had previously used that same bur for grinding a steel washer. The only problem is, now my daughter wants me to make her a set of green calcite earrings. Hope that helps! George in NJ
2235830
Yes. There is a drill bit set that you can buy. Just keep in mind that this is a screwdriver first, not a drill - don't expect tons of torque for drilling into harder items. The compact size makes it handy for doing work in tight spots, like under a kitchen sink or in small cupboards.
1859362
I never tried but having been a machinist before retirement, I seriously doubt it. I think that the drill "chips" would prevent the drill from cutting into them. And they may be to hard. But taking a better look at them, they seem to be crimped together, maybe filled with some magnetizing element. What the heck, if I wanted to drill a hole in them and they were mine, I would give it a try. L.
2142600
Some of the larger bits in this set may be used carefully in a handheld power drill, but certainly the tinier ones will snap off instantly. A drill press (or milling machine) is the best bet for getting the most out of the entire set. Also, screws are hardened steel and are very hard to drill through. I fear the combination of handheld drill along with the hardness of the target will lead to poor results. Look to "screw extractors" for a better system.
353738
Hi Scy33! No, you don't want to drill them all the way thru. Check the depth of the screw against the holding plate and the top of your desk. Put a piece of tape around your drill bit so it only drills in so far, to prevent going right thru. Hope this helps. Julie
1192409
I would say yes. Agate falls into the same Mohs hardness scale as glass (6-7) and that's what I use them for. Just makes sure to drill using water and take your time (lots of YouTube videos). Lasco makes great quality bits.
1014089
They will work... they are not sized as a wrench or nut driver... they are round but are aggressively made with sharp points to grab even if the hole is completely rounded. The problem here is these are QUITE SMALL and are made for removing very small screws. You can see by the image that they resemble "jewelers" screwdrivers 2-56, maybe up to 4-40, 6-32 is too large. Anything larger than 4-40 is probably not going to work. These work best on screws that are rounded off because someone was using a metric in lieu of a standard and vice-versa and the screw is not really imbedded with rust or threadlock for 30 years etc. Just want to emphasize, they are for tiny screws.
970664
My wife drills small stones and sea glass with a Dremel bit #7144. Any drill bit with a diamond tip end should do it. Depending on how think the rock is, the drill bits won't last too long.
793051
I don't know how small but I I think you might have difficulty controlling the gem. I was drilling nut shells successfully but I had each in a vice.
28439
I am not exactly sure what size hole you want in the 1" plate. I can drill through 3/8" plate with a 1/2" drill at 540 rpm easily using Mobil one as a lubricant. So with a sharp drill and using coolant (cutting fluids work best here) 1" should be no problem. You have to keep the chips clear and pull the drill out often to do that. You may have to stop and resharpen your drill or change it out for a sharp one. And do not force the drill through the steel, let it cut at it's own pace. Be patient and it can be done with no belt slippage and no motor stall. You do not need the lowest speeds to do that IF everything is clamped well. Do not try to hold onto the steel with your hand as you can be hurt easily.
1860741
If the tip of the tub fits in the hole the liquid is thin enough to flow under a hollow tile. However less than 1mm is very very small. I can't recall what the minimal drill bit size is but I'm you can find out by goggle or Fix a Floor company.
157989
It will work fine with a 1/2 drill. I did about 3000 holes with my 1/2 cordless drill
1632190
I have used them in the past fo cutting 1 inch diagonals and for small pieces and they did just fine for me. At this price I keep some for my glass and some for other materials. Hope this helped.
974330
If you are drilling with a portable hand drill it is probably as good as any method of trying to drill a straight hole. Just clamp it in place. If you are using a drill press it might not be usefull
2142599
use pressure very carefully simultaneously turning micro drill. May not drill due to material hardness.Dremel tool will easily do this.
1610526
Yes it will work for drilling holes. It is just not as powerful as the newer 18v drills & will need recharging more often.
667636
They work best in a drill press. Some of the smaller diameters could perhaps be hand drilled, but I'd practice first on some scrap.