Which Dremel Bit To Use To Cut Acrylic? - AnandTech Forums

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You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. which dremel bit to use to cut acrylic?

• Thread starter Thread starter Croton
• Start date Start date Jan 9, 2002

C

Croton

Banned

Which dremel bit and/or adapter do u use to cut thru acrylic? i have the professional version - the one where u can adjust the rpms. i usually use the cutting wheel, but that spits acrylic EVERYWHERE, and it's messy and looks bad! what bit are u supposed to use? ning C

ChefJoe

Platinum Member

I thought the general idea was to drill a large hole quickly so things don't get too hot, then use a dremil to rough cut (slowly, a bit at a time with a fiberglass reenforced cutting wheel... heat's the main enemy here). then to polish down to the final cut you want with said dremil tool. heat is what makes it go to poop. Alternative for rough cut is a jig-saw/band saw. Should be able to pick up a hand version with a number of replacement blades for $20 or so. J

junthin

Diamond Member

Hehe...I would like some answers too! 🙂 My dremel is kiling the acrylic. 🙁 Any suggestions? How about on lexan or plexiglass? 😉 Thanks in advance! 🙂

sygyzy

Lifer

I am assuming you are doing this for a window. If that is the case, it does not matter if it melts the acrylic or plexiglass or lexan. You are going to have it either mounted on the inside and held with brackets or in a rubber gasket. Either way when you are done just use a sander bit to smooth the edges and nobody will notice after you install it. I cut mine with a single speed dremel and sure it melted it but nobody is the wiser. C

Croton

Banned

no not for a window..i've already done that 🙂 i want to make a case like flood5's, and i want to cut fan holes in the acrylic. 🙂

Zim Hosein

Super Moderator | Elite Member

Super Moderator Croton, if I were you, I would skip the Dremel and use a drill to drill a pilot hole, then use a jig saw. The jog saw won't heat the plexi up. Just make sure that you tape the bottom of the jig saw before you use it directly on the surface of plexi as the metal bottom will leave marks. Hope this helps. C

Croton

Banned

sigh.... gotta get a jig saw then 🙁 heh

Zim Hosein

Super Moderator | Elite Member

Super Moderator Croton, jig saws aren't expensive at you local home improvement store $30-$40 dollars, besides once you have one, you'll find plenty of uses for one. I bought mine when I was in HS so my friends & I could build a 3/4 ramp, since then, I've used it plenty of times for different uses. A

asheesh

Junior Member

Hmmm... Why dont you just use a regular hole saw bit (like the kind to cut a hole for the lock in a wooden door). JUst go slowly and you wont melt it. Also, you could have someone spray water on the bit while it is cutting. With this setup, I seriously doubt it will melt. A hole saw is like 6 bucks... Asheesh P

Pul54r

Junior Member

The reason the acrylic is melting is due to a lack of heat transfer. A dremel "grinds" away what you are cutting. A jigsaw, however, actually tears the material away and most of the heat goes with the material you are removing. And type of quick-cutting saw will work. Hack saw, jewlery saw, Drill hole cutter, jig saw. If you REALLY want to cut acrylic with your dremel, you'll want to put it on the lowest rpm setting and push very hard to remove the most amount of material possible. You'll also want to get a dremel cutting bit (not a cut off wheel, but a wheel with actual teeth). Go with a hole saw that fits on a drill for perfect holes. J

JDorn

Senior member

last time I tried to cut some Plexi, i attempted to use my jigsaw and it was a very very bad idea, the up down harmonic motion of the blade will crack the plexi very easily. D

DongTran

Platinum Member

hi ning, i would use a fine blade jigsaw, works great for me, and can turn out to be very even if you are careful. of course i haven't jigged any LEXAN in years, i've been letting my friend water-cut my lexan for me. razor sharp edges, computer programmed accuracy, pretty much the way to go. 🙂 p.s., should mention that dremel bits get MUCH hotter than jigsaw bits.... C

Croton

Banned

damn u guys and your tools! 🙂 i just used my grout attachment to cut my acrylic - not the prettiest, but it works.it's not so smooth, but that's what sanding is for! 🙂 i think i might go convince my pops to turn our garage into a workshop so i can get some nifty tools. heheh thx for your advice people!!! You must log in or register to reply here. Share: Facebook X Bluesky LinkedIn Reddit Tumblr WhatsApp Email Share Link

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