"AncelB mosaicmerc@... [Homebrew_PCBs]"
stand that seems to eliminate any "hand wobble" from causing breakage.
My CNC machine can drill lots of holes with resharpened carbide and a
Grizzly pencil-style die grinder.
Perhaps rigidity in the holding of the dremel is more important than
runout? Or at least, *lack* of rigidity is more common as a cause of
breakage?
> I use resharpened carbide in my dremel 395 with 1/8" shanks for PCBMe too, but I rarely break bits since I switched to a home-brew drill
> work. They work fine....I go down to around 0.31 mm. I can go smaller
> but bit breaking happens every 10 holes or so.
stand that seems to eliminate any "hand wobble" from causing breakage.
My CNC machine can drill lots of holes with resharpened carbide and a
Grizzly pencil-style die grinder.
Perhaps rigidity in the holding of the dremel is more important than
runout? Or at least, *lack* of rigidity is more common as a cause of
breakage?