Laser Cutting Foam

[beck3906]

For those that have a laser....

Can a laser be used to cut holes in 4 inch foam? I would like to have a series of 3/4 inch holes cut into a block of foam.

Thanks for the info.

Rick

 

[kghinsr]

Rick
Probably not with a laser
I don't think they would be 3/4 on the bottom side
A CNC machine would do it just take a little longer
but with CNC it would be the same size both ways
ken

 

[btboone]

Exactly right Ken. Lasers have a wide beam, sometimes around 3/8" that gets focused down to a small spot by a lens. The usual focal lengths are 1.5" or 2". Once you get past the focal point, the beam spreads out in a cone shape, so will lose intensity and spread way out. Depending on the foam, a hot wire could possibly work or it could be milled or drilled.

 

[beck3906]

Thanks for the info.

Rick