jonkovach
Plastic
- Joined
- Jan 29, 2014
- Location
- Gibsonia, PA
I am cutting fiberglass & polyester resin composite panels. Most are in the range of .090" to .125" thick, so I'll focus my question around those thicknesses.
This stuff is abrasive as heck... so I'm cutting with a PCD bit from RobbJack. .250" in diameter. I am currently cutting at 15,000 RPM with 50-60 IPM. I'm worried that my chipload is too small, and therefore prematurely wearing out my bits. That puts my chipload between .0017 and .0020. I found a chart online that says I should be between .003" and .005", ideally at the top of that range.
My problem is, I have bad suction, and cannot cut much higher than 60 IPM. So if I want to cut with the greatest chipload I can (.005"), I'm at 400 SFM, 6,112 RPM, and 61.12 IPM. Does this make sense?
I'm worried that cutting at my current .002" chipload, I'm prematurely wearing out my bit due to heat.
I am cutting a full slot. No finishing pass. One time around and it looks great on the edges.
Thanks for any help.
Jon
This stuff is abrasive as heck... so I'm cutting with a PCD bit from RobbJack. .250" in diameter. I am currently cutting at 15,000 RPM with 50-60 IPM. I'm worried that my chipload is too small, and therefore prematurely wearing out my bits. That puts my chipload between .0017 and .0020. I found a chart online that says I should be between .003" and .005", ideally at the top of that range.
My problem is, I have bad suction, and cannot cut much higher than 60 IPM. So if I want to cut with the greatest chipload I can (.005"), I'm at 400 SFM, 6,112 RPM, and 61.12 IPM. Does this make sense?
I'm worried that cutting at my current .002" chipload, I'm prematurely wearing out my bit due to heat.
I am cutting a full slot. No finishing pass. One time around and it looks great on the edges.
Thanks for any help.
Jon