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Re: bulkheads / baffles in secondaries
Original poster: "Scott Hanson" <huil888@xxxxxxxxxxxx>
Almost all routers, jig saws, Dremel-type high-speed grinders, and
even many newer table saws use "universal" type AC-DC brush type
motors. Use your variac to reduce the AC input voltage and spindle
speed, and therefore reduce friction and the tendency to melt the
plastic workpiece. The reduced friction will immediately be
apparent, especially with low-melting point materials like
low-density polyethylene (LDPE). The reduced cutting speed also
provides more control over the cut.
Regards,
Scott Hanson
-- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, August 17, 2006 6:21 PM
Subject: Re: bulkheads / baffles in secondaries
Original poster: otmaskin5@xxxxxxx
Hi Gerry, you mention cutting poly board with a jig saw. Are you
referring to polyethylene cutting board? I've tried using a jig saw
on acrylic & other plastics, but the heat from the blade seems to
melt the material & the melted material either closes the cut behind
the blade or leaves a hard to remove pile of melted/refrozen plastic
along the edge of the cut. Not sure I've tried polyethylene
yet. Any suggestions? Thanks, Dennis Hopkinton MA