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Old 01-28-2013, 06:53 AM   #11
Hounddog

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I happened to be reading the ASM Composites Handbook #1 the other day. They have a specific section on laser cutting composites. Apparently, even with high wattage (5000+), it's problematic because the resin can flash cure (or re-cure) on the edges of the fabric, much like slag from a poor plasma cutting operation.

Have a look at that chapter, if you can find the book. It's now out of print, since the ASM revised it into Handbook #21. I bought a used copy for $100.
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Old 03-08-2013, 09:38 PM   #12
Eles1 Models

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I have cut Kevlar dry fabric and K - 3/16 balsa K plate with a 35w Co2 laser. Cutting the fabric makes for a big pain in handling during lay-up (wet). I found that making the panel then cutting finished parts the only way to go!

Lester
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File Type: jpg Laser cut Kevlar (3).jpg (184.8 KB, 20 views)
File Type: jpg Laser cut Kevlar (1).jpg (371.1 KB, 14 views)
File Type: jpg Laser cut Kevlar (2).jpg (313.8 KB, 16 views)
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