Wayne.B wrote:

On Tue, 27 Dec 2005 00:41:18 GMT, "Doug Kanter"
wrote:


Did you find you had to slow down the router to keep the plastic from
melting?


====================

The plastic melts when the cutting bit gets too hot. Slowing down too
much can actually make the problem worse. Nice sharp carbide bits are
the best defense, using nice beefy bits with a 1/2 inch shank helps
also.

we used to machine delrin parts in a shallow tub of water to prevent
melting. It kept the mill cool enough to allow decent feed rates.

Perhaps a mist of water (or even soapy water to keep the surface wet) to
keep things cool along with high cutter speeds and low feed rates?

--
"A prudent man foresees the difficulties ahead and prepares for them;
the simpleton goes blindly on and suffers the consequences." - Proverbs 22:3