quercus

I use double cammed ascenders too but I made one myself using two ascensions (left and right) from Petzl. I cut the rubber handles off, screwed them together using holes that are originally in the device (so no drilling) and secured the bolts with loc-tite, then I cut the handles very accurate in two seperate parts (again one left and one right part). I glued the handles back on on each side and secured them with a very strong vinyl based tape. In this system you can't use a carabiner anymore to lock the rope in because the device is too wide. So at first I used a smooth nut and bolt. Because it was a bit too bulky I switched to a 10 mm rope with stopper knots. When I use this device I climb for a meter or two and place a figure 8 knot on the two ropes combined so even if the device would fail and slip, I cannot fall on the ground. I don't use Kong ascenders because the two cam sections are riveted together. The idea of loose rivets makes me feel all warm inside....The device I made myself would still be safe, even if the nuts and bolts would fail with whom they are screwed together...