Have been using the Kooto for just over a week now and have some observations...I've found that I'm not getting the straight line accuracy I was hoping for. The aluminum extrusions in the assembly are proving to be a little light when cutting foam-cored pvc sheeting and I'm seeing off track cutting as much as .25" over a 4' span. The off-tracking is especially severe when only one side of the clamping bar comes into contact with the substrate (like when trying to shave the edge off a board). I can see now that for doing higher precision jobs, I'm going to need to invest in a more robust cutter. Don't get me wrong, I'm not bashing the Kooto as it does a fine job with Coroplast and we will definitetly keep using it for such, but potential buyers should be aware of it's limitations. - Boyd