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What are the pros and cons for plexi and acrylic? - Page 3

post #21 of 29
Thread Starter 
I see, and to cut acrylic, you need carbide blades..? With a jigsaw?
post #22 of 29
With a jigsaw, your issue is friction. The extra heat caused by cutting will re-weld the chips back into the cut, literally fusing the sheet back together behind the blade. Larger teeth, slower speed and keep the blade moving should work out ok. Try out a test cut on a piece of scrap. For doing a window, I'd recommend getting the piece already cut to size, or use the score and snap method.

No such thing as a carbide tipped jigsaw blade.
post #23 of 29
Thread Starter 
Aah I see. So the way acrylic is made, when it gets hot, on a molecular level the material fuse back together from the heat.
post #24 of 29
Yeah, the chips can re-weld. I've had them weld so hard on my scroll saw that the sheet actually cracked somewhere else when I tried to break it off at the cut. The trick here is to use a larger tooth blade for things like scroll saws, band saws, and jigsaws and keep the speed down as much as possible. The bits of acrylic that are carried out of the cut help to carry off excess heat as well. When cutting effectively, you should get warm chips, not melting.
post #25 of 29
Thread Starter 
Yeah basically just keep the friction a minimum, so you're still cutting, but not heating it up to a point where it is causing re-welding.

So I should be able to just acrylic with a jigsaw as long as I know what Im doing then right? I dont want to pay to have it done, Im a modder my philosophy is to do the work myself. That's like saying you build PCs but you go buying one from a pre-built vendor.
post #26 of 29
Yep. Go for the jigsaw, but keep the speed down as much as you can. Even try cutting in short bursts. You should not see chips remaining in the cut.

Also, I'd advise to cut about 1/16" away from the line and finish it out with a long file. It'll come out a lot cleaner. It's more work, but worth it.
post #27 of 29
Thread Starter 
Ok, ty so much harrell

where would you recommend for quality acrylic thats affordable, i dont wanna be raped by shipping if possible, and i dont want anything crappy
post #28 of 29
If you have a TAP Plastics or other plastics retailer near you, go for that. I've found that Delvie's, even with shipping, can be cheaper than going to TAP though.

Ref:
www.tapplastics.com
www.delviesplastics.com
post #29 of 29
Thread Starter 
saved :#!
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