Its made with a couple layers of MDF and I can swap out the top piece quickly for common angles. Or just use it as-is and when it gets messy looking with a variety of cuts, just swap it for a new one. Can get a bit annoying but I've had issues with keeping the Bosch in alignment/calibrated and this has helped overall. The pic doesn't show it but I've got Matchfit dovetail grooves as well which has been nice for securing boards. Dust collection - woof, haven't figured that out yet. Have tried a few solutions from Etsy which are "fine" at best.