Drill Press Local to Nashua/Amherst/Milford needed

David Rysdam david at rysdam.org
Tue Dec 16 14:15:10 EST 2014


Bill Ricker <bill.n1vux at gmail.com> writes:
> If you can't slow it enough, can you spray-cool when drilling plastic?
> I forget if you'd want wood bit or metal bit for this ?

I googled this and it looks like there's a special acrylic bit you can
use. Looks like a regular bit, but with a much sharper tip. It also
looks optional.

Pretty much all my bits are 118 degree tips and I use them on both wood
and metal with no problem other than the crappy black-coated, Home
Depot-level ones don't really work on metal. Those go in the toolbox for
mobile repairs around the house.

> If this particular acrylic machines at all like Lucite™ (only acrylic
> i've machined, in a prior century!), it also wants to be machined with
> its protective adhesiver-paper cover still on, it helps prevents
> chipping.  If you don't have a cover layer, shelf-paper or
> packing-tape might temporarily replace it ?

I've been thinking maddog's acrylic is a laser-cut thing he ordered
somewhere and wouldn't have any paper. MDF/plywood backing would
probably work.



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