I haven't tested the full weight load yet, but at 190 lbs. I didn't feel the workmate having any struggle while standing on it. This collapses to a much smaller frame which is great for those of us who wish we had more space. The clamps work well and haven't yielded yet. I have not used the 90-degree clamp option yet. My one issue is that since the workmate is light, it sometimes kicks up off the ground, so I need to use my foot to hold it down. I don't complain about it's light weight when I have to carry it around though!