Tipod clamp for 3/4" copper pipe

Original design:
http://www.thingiverse.com/thing:1035943

I wanted to use US 3/4" copper pipe for the boom. It is larger in diameter than what the original part was designed for. I redesigned it to fir the pipe I wanted to use and also thickened some walls to make it stronger. Original part printed in PLA cracked due to stress. New part is printed in PETG.