I will add to the Dremel recommendations. I have a very old two speed 285 that I bought when I was in high school when a local shop was bought out and they decided to clean out the backroom. (THe price I paid for it was so low that I won't mention it.) I also recently purchased a cordless one as well. (I should have purchased the slightly more powerful one butI solved the problem by buying another battery.) To the grumble about discs shattering, I have started putting two of the thinner discs together and that seems to solve that problem. As to the non-straight cuts. I usually set the track on top of where it needs to go, cut it, and then use the disc to grind the track to 90 degrees.
maxman RR_Mel I just checked mine, it grips an #80 easily If you say so. Not sure how it does, however. #80 is 0.0135 dia. Information for the chuck says it will work down to 1/32 inch, which is 0.031 dia.
RR_Mel I just checked mine, it grips an #80 easily
If you say so. Not sure how it does, however. #80 is 0.0135 dia. Information for the chuck says it will work down to 1/32 inch, which is 0.031 dia.
RR_MelI have drilled a couple of #78 holes in 1/16” styrene using my Dremel in my Dremel Drill Press and really lucked out, didn’t break a bit.
I got my Dremel drill press around 1970 when I was building R/C planes. I could use the smallest drill bits and not break them in the drill press, I had no such luck holding the thing freehand. It was a good investment.
Brent
"All of the world's problems are the result of the difference between how we think and how the world works."
RR_Mel This is my Dremel 4486 Keyless Chuck with and without a #80 bit. It isn’t loose either easily tight enough that it would easily drill holes if you have the guts to attempt it at the high RPM of the Dremel. I have drilled a couple of #78 holes in 1/16” styrene using my Dremel in my Dremel Drill Press and really lucked out, didn’t break a bit. That gap at the center of the jaws is smaller than a #80 bit.
Well, I obviously can't argue with photographic evidence (like some can). I was only going by what the Dremel information said, which was 1/32 inch. Maybe there is some tolerance in the numbers so that purchasers can't complain if it won't tighten on a #80. Only way for me to find out is to get one and try it out.
And I wasn't intending to use it in a high speed Dremel. I was going to try it in a Dremel with Variac speed control.
If I get one of the chucks I'll report back if it actually closes down to #80.
Thanks