Cutting Plexiglass

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Forum topic by WoodNuts posted 09-29-2010 02:52 PM 1535 views 0 times favorited 10 replies Add to Favorites Watch
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74 posts in 2912 days

09-29-2010 02:52 PM

Do you get a good clean cut with an 80T blade when cutting plexiglass?
Any issues?

-- ...there's a fix fer dat...

10 replies so far

View j_olsen's profile


155 posts in 3135 days

#1 posted 09-29-2010 03:27 PM

WN—I do it quite often—I find that a slow steady feed rate and a zero clearance insert work the best

-- Jeff - Bell Buckle, TN

View quartrsawn's profile


146 posts in 3176 days

#2 posted 09-29-2010 03:35 PM

I cut it on my table saw with a 10 in. combo blade , works fine.

-- Nat - West Sayville,L.I., NY

View Gene Howe's profile

Gene Howe

10349 posts in 3392 days

#3 posted 09-29-2010 04:18 PM

I like to leave the paper on or tape the cut. It seems to give a cleaner cut with less melting.
I also use an 80T blade.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

View Tracey615's profile


19 posts in 2762 days

#4 posted 09-30-2010 07:02 PM

I cut the piece for the opening about 1/16” large. Then use my old jointer to finish to size. Works well for me. Not too good on the jointer. It is an old 4” x 24”, it leaves a scolloped edge which is easily scraped smooth.

-- Trace the Bald

View richgreer's profile


4541 posts in 3038 days

#5 posted 09-30-2010 11:38 PM

FWIW – Thinner plexiglass can be cut quite easily with hand tools. You need a scoring device. I’ve had pretty good luck with that and I get cleaner cuts than with a power saw.

I know we are all in love with our power tools but for somethings, hand tools work better.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View smgaines's profile


22 posts in 2764 days

#6 posted 09-30-2010 11:57 PM

I’m with Gene tape it up and it should cut fine. If the plexi doesn’t have a protective film on it tape some paper to it. I had to recut a piece one time because the table saw top scratched it up.

-- Scott, Georgia

View snowdog's profile


1164 posts in 3946 days

#7 posted 10-01-2010 02:04 PM

I heard that if you turning the blade backward it will cut the plexi without chipping. I tried it a few times and it seemed to work well. Good ventilation is always a plus :)

-- "so much to learn and so little time"..

View surfin2's profile


51276 posts in 3099 days

#8 posted 10-01-2010 11:53 PM

You have more of a chance of it chipping (plexi) backwards…
I’ve used 80t finish blade & router with perfect results…

-- Rick

View firecaster's profile


572 posts in 3382 days

#9 posted 10-02-2010 01:42 AM

I’m with Rich. I use a hand held scoring tool and a straight edge. Lexan (polycarbonate) has to be cut with power tools I think.

-- Father of two sons. Both Eagle Scouts.

View Abbott's profile


2570 posts in 3267 days

#10 posted 10-02-2010 02:20 AM

I cut Plexiglas regularly on my table saw with no troubles, it just needs to be fed slowly into the blade.

-- Ohh mann...pancakes and boobies...I'll bet that's what Heaven is like! ♣ ♣ ♣ ♣

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