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| Routing plexi http://luthiersforum.com/forum/viewtopic.php?f=10101&t=47289 |
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| Author: | Pegasusguitars [ Wed Feb 17, 2016 2:51 pm ] |
| Post subject: | Routing plexi |
I need to make a number of new plexiglas templates for some classes I teach. I have intermittent success routing plexi, and am interested in hearing other ideas. I typically rout 1/4" or 3/8" cast plexi on the router table with various results, some not so pretty. I have been reading about various techniques on the web such as using WD-40 or cutting fluid as a lubricant, using the largest size bit possible, using the slowest speed possible, using only spiral bits, using slowest feed rate, using fastest speed rate, etc. All I need is to find a system that works good. Got one? Thanks, Bob |
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| Author: | Chris Pile [ Wed Feb 17, 2016 3:30 pm ] |
| Post subject: | Re: Routing plexi |
Use a fan to blow the fumes AWAY from you. |
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| Author: | Pwoolson [ Wed Feb 17, 2016 3:49 pm ] |
| Post subject: | Re: Routing plexi |
It's very dangerous routing plexi (acrylic). It can shatter sending shards of shrapnel flying around your shop. You are much better off with lexan (poly carbonate) for safety as well as the fact that it routes beautifully. |
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| Author: | Barry Daniels [ Wed Feb 17, 2016 7:20 pm ] |
| Post subject: | Re: Routing plexi |
They make various special router bits for plastic that often has a single cutting edge with a 90° rake. This can prevents grabbing and melting/burning |
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| Author: | Pegasusguitars [ Wed Feb 17, 2016 7:30 pm ] |
| Post subject: | Re: Routing plexi |
O.K., I understand about routing cast plexi. Been there, done that many times and know about shattering. No experience with routing Lexan. I just called and ordered some. So what is the recommended technique, bits, etc. for Lexan? Thanks, Bob |
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| Author: | Pwoolson [ Mon Feb 22, 2016 10:12 am ] |
| Post subject: | Re: Routing plexi |
I've found that no special steps need to be taken on Lexan. If you have a variable speed router, you might slow down the bit a little just to prevent heat buildup. But the stuff is really a dream to machine. |
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| Author: | bobgramann [ Thu Feb 25, 2016 1:50 pm ] |
| Post subject: | Re: Routing plexi |
+1 on the Lexan. It is worth the extra money. |
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| Author: | smckee [ Thu Feb 25, 2016 4:56 pm ] |
| Post subject: | Re: Routing plexi |
Have a look at these 0 flute plastic cutting bits: http://www.toolstoday.com/c-432-plastic ... -bits.aspx http://www.toolstoday.com/p-5882-solid- ... -bits.aspx |
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| Author: | bluescreek [ Fri Feb 26, 2016 7:09 am ] |
| Post subject: | Re: Routing plexi |
slower feed and use a coolant. In my machining days we would use a 2 flute cutter and a solution of about 1 tea spoon of dawn to a qt of water. It helped to keep the cutter cool and avoid plastic buildup on the bit. Also held the ships at bay. Doesn't take much a few drops leading the cutter will do the trick. |
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