HEY , it’s just like building something you can buy I kit of ,( ie: my strip mall project ) THE CHALLENGE !!
Thanks K4. It’s NOT a 4-40 though. It’s around a 9/32 with a 40 count thread. MUCH larger diameter than a 4-40. I was thinking about the dowel rod idea and just tried a pencil. Perfect fit! I think I’m on to something here![tup] I just have to find a dowel that’s the right size and a little harder wood (or plastic) and I should be in business. Still going to order a pin vise though.
Thanks for the help everyone.
The collective groan you heard came from the forum members standing by their lathes, thread cutting gears and 60 deg tool bits in hand ready to make chips for you. But it’s been fun. J.R.
.28 is 280 thousands of an inch in diameter, which is thirty thousands over 1/4 inch in diameter, which is pretty big for micro drill bits, and Chinese dremels are only good for what they are good for; they don’t adapt well, and 20k rpm is a bit fast for drilling holes, and you’re not even past step one yet. Don’t expect things to get better anytime soon.
If you want to drill a hole today; I suggest putting your micro drill into a pin vise, chuck the pin vise into your drill motor, and drill away.
-rr
MicroMark lathe gears for 40tpi
20 (40) 50
30 50-40 60
30 60-40 50
40 50-30 60
40 50-40 80
80 50-20 80