3 ms·
They can be pretty small. I purchased this set sometime back. It’s served me well. Gyros® HSS Wire Gauge Mini Twist Drill Bit Set |Includes 20 Micro High Speed
by jxramos 4y ago
They can be pretty small. I purchased this set sometime back. It’s served me well. Gyros® HSS Wire Gauge Mini Twist Drill Bit Set |Includes 20 Micro High Speed Steel Bit Sizes #61 to #80 | with Convenient Clear Dome Storage Case (45-22010) https://www.amazon.com/gp/product/B000SKVF8I https://www.amazon.com/gp/product/B000SKVF8I.
I frequently use a bigger size for fabricating reinforced epoxy with paper clips serving as rebar. Gyros Micro Drill Bit Set of 25#57 Drill Bits–Small Drill Bits for Jewelry, Plastic and Soft Metal–Mini Twist Drill Bit Set for Pin Vise Hand Drill, Rotary Tool - Carbon Steel Wire Gauge Drill Bits
- noman-land 4y agoOut of curiosity what do you use the paperclip reinforced epoxy for? Some sort of mold making?
- jxramos 4y agousually it's for repairs of broken things, plastic tabs, random cast models, appliance parts, stuff like that. I'll drill a routing for the paperclip to thread through, then I bend and thread the paperclip through the tunnels, then I backfill the epoxy over the voids. They've usually been pretty tough durable repairs that hold up pretty well.
- mauvehaus 4y agoA #80 tap drill is 3.4x bigger (.343mm) than the one they're showing in the video (.1mm). Which isn't to say they aren't impressive, but they're typically made of HSS, not solid carbide. .1mm is about 4 thou (.004"), or the thickness of a piece of paper. I'm being a little loose with the numbers here, but they're in the ballpark.