home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!srvr1.engin.umich.edu!batcomputer!cornell!uw-beaver!cs.ubc.ca!mala.bc.ca!wagner
- From: wagner@mala.bc.ca
- Newsgroups: rec.woodworking
- Subject: Re: Cutting plexiglass
- Message-ID: <1993Jan22.111139.1276@mala.bc.ca>
- Date: 22 Jan 93 11:11:39 -0700
- References: <1993Jan19.215422.21313@mlb.semi.harris.com> <dubin.727550682@spot.Colorado.EDU>
- Organization: Malaspina College
- Lines: 35
-
- In article <dubin.727550682@spot.Colorado.EDU>, Mark W. Dubin writes:
- > With regards to cutting plexiglass:
- >
- > The obvious problems are chipping and melting due to heating from
- > the cut. As others say, fine rather than course blades help with
- > the chipping. I would not use a table saw on very thick pieces,
- > it's too hard for the heat to dissipate. A band saw at slow speed
- > or even a few minutes by hand are better. A trick a machinist taught
- > me is to use kerosine as a cooling lubricant while cutting. It does
- > not mar or melt the plastic.
- >
- > One can polish plexiglass as if it is a fine hardwood, using fine and
- > then very fine grits and finishing up with plexiglass polish and/or
- > scratch remover for the final step. I get mine from a commercial
- > plastic distributer. It comes in consumer size bottles and is
- > probably also available from good hardware stores. I am always
- > surprised at how well it works.
- >
- > --the ol' professor
-
- I cut both aluminum and plexi on both my chop saw and my table saw by a liberal
- application of bees wax. I get mine in a cardboard tube from my fine woods sup-
- plier. I use a hollow ground "fire tooth" plywood blade. (it's also useful for
- the bandsaw as I find it keeps the blade from jamming on tight radiuses). Just
- start the unit and rub it on the sides of the blade. Cut a little into the tube
- to fill the teeth and cut away. Seems to keep chips clearing and keep heat down
- at the same time (By aluminum, I don't mean sheets, only bar and other stocks).
- --
- 73, Tom
- ================================================================================
- Tom Wagner, Audio Visual Technician. Malaspina College Nanaimo British Columbia
- (604) 753-3245, Local 2226 Fax (604) 755-8742 Callsign VE7GDA
-
- I do not recyle..... I keep everything! (All standard disclaimers apply)
- ================================================================================
-