Instructables

what blade should be used for cutting taped acrylic sheets with a skill saw?

I would like to know so I can cut some acrylic later it is taped on both sides to prevent splintering of the material.

petercd10 months ago
I would use a 60 tooth blade used for aluminium, that is if you cant find one for plastic.
The usual wood blades have 24 teeth and do cause some splintering on plastic, best to go slowly too.
This is the sort of thng Im thinking of http://www.toolstop.co.uk/irwin-10506834-professional-aluminium-circular-saw-blade-210-x-30mm-x-60t-p41708

... of course if a skill saw is a hand saw and not a circular saw, then go for many teeth/ fine blade
nerd7473 (author)  petercd10 months ago
and yes it is a circular skill saw
nerd7473 (author)  petercd10 months ago
OK I will tell my dad because he is doing the cutting not me and it is today so i need to find a 60 tooth blade.
caarntedd10 months ago
I know that you have already marked this as answered, but if you can't get the right blade, I have had good results cutting acrylic sheet with a circular saw that has the blade mounted backwards. If you move the saw slowly you won't crack or splinter the sheet, and will only remove tiny chips of plastic and end up with a neat cut.
Also remember that the key to cutting this stuff is to support/clamp the sheet securely as close to the cut as possible to prevent bouncing, vibration and movement.
If you have an electric jig saw (I don't know what you call them over there) I would prefer to use that. It's a little more difficult to cut straight, but you could set up a guide using something long and straight and a couple of clamps.
nerd7473 (author)  caarntedd10 months ago
ok thanks
Vyger10 months ago
Just a few notes.
The film is there more to keep it from getting scratches than anything else. The plastic surface gets little scratches very easily so leave it on until everything is done.

If the saw blade gets hot it can melt the edges of the plastic so be careful not to bind up the blade in any way.

After it is cut the edge will have a foggy appearance caused by the scratches from cutting. You can turn this clear again by using a propane torch. You just quickly pass the flame over the edge and it will remelt the surface and restore the clear plastic. Hold it some distance away and let it get just hot enough to make it clear again. If it gets to hot it could catch fire.
nerd7473 (author)  Vyger10 months ago
thanks for the info