On Sun, 3 Jun 2018 12:21:08 wrote:

End caps are to prevent the pipes from sliding off the ends. End
caps stick up about 1/8 to 1/4 inch.

he said to protect the threads so why would he care at all about the
threads is he planning on using them for some other purpose and
wants to maintain the threads

he is not thinking clearly and that is a bad thing in any shop

if the clamps slide off the end it is a even worse idea

some nicely crafted ones made from wood scraps would look much
better and be free and not require a trip to the store