Laser for CNC router upgrade?


Junior Member
I have a home made CNC router table. 16" by 44" I have been using it for the past 3 years to make and sell home decor signs, engravings, and carvings, along with other artworks like cutting out shapes/words/letters from mostly MDF but other hardwoods as well. I have used the CNC to make rockets and robots. But I want to cut foam board (for obvious reasons) I can cut the firewalls all day long with a tiny router bit. But The foam board presents an evolution I am wanting to take with my CNC. And that is a laser.

Anyone experianced laser cutters out there want to help me out? My research has led me to this product

I consider myself a very good at CNC routing but when it comes to lasers a few mysteries linger:
Is 1.7 watts enough power for foam board? What other material is it good for?
What is the feed-rate that you should use? How can you calculate this?
What other consideration do I need to be concerned with when designing or operating with a laser? (Minus the obvious safety concerns, don't worry those will be taken)



Junior Member
1.5watts will likely not cut foam board. You need to be in the 40watt or higher range.

The drag knife from works well to cut foam on a CNC machine. I have cut over 100 sheets this way.


Junior Member
Zeron thanks for the reply. I am also working on a drag knife solution specifically to satisfy my wife's fondant cutting requirements. Still need to figure out how to get the cam software to do a drag-knife tool path.

But I think a 40w laser would be a bit overkill from what I have read.