I saw this At harbor freight today for $8.99
I should have bought one - I'll pick one up during the week.
What I like about it, besides price, is it looks like you use just regular X-acto Blades.
There's a Screw in attachment that the blade goes in.
These Blades do go Dull - Heck just cutting paper,
So Foam has to be worse, on the blade.
I Only use a Hot knife to remove the bottom Disc.
Would be nice to not have to buy Special Blades.http://www.harborfreight.com/5-in-1-hobby-woodburner-38593.html