zachtos
Active member
Oh, the rock pillar idea was something I originally wanted to do but then realized what a pain in the *** it is. It's hard to drill most of the rocks w/o them crumbling. I drilled maybe 10 or so rocks until I decided to drill 1/4" holes in them instead for mounting with zip ties. A $10 masonry bit will tear right through that rock like butter. I can't recall if I used 3/4" or 1" though for 1/2" PVC frame holes.