2 lb EPS Foam Carving- Bits, Feeds, Speeds?

[SarahRay]

Thanks for the reply. Do you have any recommendations on feed and speed?

[knight_toolworks]

6 to 8 ips the z is the limit I think 6ips is the max. not sure of the rpms but its not critical on foam so keep it low to keep the heat down. the larger the stepover you can manage will save a huge amount of time. but saving the roughing toolpath will really save some time.

[pro70z28]

I've cut a fair amount of HDU and also pink & white foam from the big box store with 1/2" bull nose. Single finish pass is all I used. In the early days I even ground a bull nose end on a 1/2" drill bit with the bench grinder (poor man's router bit) and it worked fine on foam also.