Cutting triple walled polycarbonate

[anothernewbie]

Hi,
We are cutting triple walled polycarbonate and getting little "strings" along the vertical braces. We have tried some different cutting speeds 1-3 and they all seem to be giving more less the same result. We didn't know if this could be avoided by changing the bit or rpm?

-I read on the message board to cut plastics with the super O bit at 9,000 rpm.

-Possibly instead of running the bit outside right run it outside left?


this is more/less the material structure below, .65 thick, made up of thin walls.
-------
| | | braces
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| | |
-------

thanks,

[Brady Watson]

Greenhouse glazing?...If so, it is a little tricky with each layer being so thin (webbing) - I would turn up the RPM to the 13-15000 RPM range and MS .9 to 1.5 IPS with a single spiral-o.

-B

[anothernewbie]

Brady,

Its not for a greenhouse but the same type of material. I'll try increasing the rpms, we were afraid of melting.

Thanks!,