Nothing new here, a quick search on the GripBoard shows that the idea of using washers to choke grippers is decades old. I just wanted to share some measurements/ideas if somebody wants a cheap, easy to implement alternative to hose clamps.   The picture says it all, but the main idea is to get a washer that would be too small to put the spring through with most of your grippers, but file notches of different sizes to accommodate different spring diameters. With some grippers, even if I end up