Knock for cubical quad

These knocks fit on the end of spreader rods for a 2 meter cubical quad beam antenna to hold the antenna elements to the spreader. They friction fit to the size fiberglass rods used by a homebrew cubical quad but may have to be sized up or down to fit other size spreaders.

While I have made them from PLA and they last quite a while, a less UV and temperature sensitive plastic would probably be a good idea.

If you have trouble with them popping off the bed while printing a raft would stop that.