I had a bear of a time cutting some plexiglass without cracking it.
It was 3/16 inch thick.
Using a very fine toothed sabre saw did not work.
I tried scoring it with a sheet rock knife.
I finally made some progress using a hack saw and going REAL slow.
Any tips ?
I'd second the table saw method. I've never
had much luck with other methods. (I don't
switch blades. I just use a fine-cut carbibe
blade (60+teeth) for everything. One caveat,
though: The saw blade will melt the plastic a
bit and release fumes. I really don't know how
toxic those fumes might be. Best to have ventilation.
I second carbide tip blade - but fewer teeth. More teeth means more
melting - just cut at slow pace when feeding the Plexiglas. I used to keep
a sharp blade that had never met wood just for plastic and kept the blade
lower so it was cutting forward instead of down.
These people are EXPERTS in plastic.
San Leandro HQ 510 357 3755
TAP Plastics (408) 292 8685
1212 The Alameda
San Jose, CA 95125
TAP Plastics Inc (408) 265-6400
1008 Blossom Hill Rd # F
San Jose, CA 95123
TAP Plastics Inc (650) 962-8430
312 Castro St
Mtn View, CA 94041
Indeed. Some friends needed a shelf in their kitchen window.
I bought a piece of lucite from Tap. They accept orders for
almost any size and will cut and polish to your specifications.
With lucite you really want all the edges polished.
The end result looks fantastic.
Using a table saw with the blade set so low it only partially cuts thru on
the first pass, then set the blade a little higher for a second pass, then
repeat until you are all the way thru. Taking just a little plastic each p
ass keeps the melted plastic from building up so much.
Many years ago in shop class, I used a band saw to cut out the plastic
letter opener I made!
Another possibility might be using a cutting tip for a Weller Soldering
Gun. I have such a tip, but have never tried it. I suspect it would be
a slow process.
Reading the other suggestions, I prefer the scoring and snapping
approach. I think it would be the fastest method.
Last time I cut 1/4" Plexiglas I was using 28 carbide teeth on a 10" blade.
That's about 1 tooth/inch. With the top of the blade ~1/2" above the work
there was no white melted crud or any chips missing. Used a paint scraper
to smooth off the cut edge. I have no idea what RPM my tablesaw runs at.
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