Stop melting my material!

[Claytonc]

I'm trying to cut some 3/8" plastic cutting board (Building a 24" x 48" machine) but my bit keeps melting the material ruining the piece every time... I'm currently using a 1.8mm end mill. It seems to go longer without clogging at slower spindle speeds but it still clogs eventually... Maybe a larger bit?

Any suggestions?

[firefoxik]

Ï had great results with plastic board and/or perspex with one-flute 3.2 mm bit at low RPM and perfectly clean cut...
1/8"(.1250") single flute carbide endmills for plastic | eBay

[Claytonc]

I just placed an order for this bit. Thank you very much!

Ï had great results with plastic board and/or perspex with one-flute 3.2 mm bit at low RPM and perfectly clean cut...
1/8"(.1250") single flute carbide endmills for plastic | eBay

[Claytonc]

I just wanted to drop you a thank you note about the plastic cutting bit. It worked GREAT!!

Ï had great results with plastic board and/or perspex with one-flute 3.2 mm bit at low RPM and perfectly clean cut...
1/8"(.1250") single flute carbide endmills for plastic | eBay

[restless1]

What rpm did you cut at I can go as low as 5000 rpm!

[Claytonc]

I have no idea how fast my router is turning... I really wish there was something I could buy to let me know what speed my router is running at... I have a varaible speed control but no way to know RPM speeds....
How do you know what speed you are running at?

What rpm did you cut at I can go as low as 5000 rpm!

[restless1]

this is what i have it feeds a tach signal into my g540www.SuperPID.com - Super-PID Closed-loop Router Speed Controller