I'm wanting to make a combo outdoor planter/privacy wall out of cinder blocks. How many blocks tall is it safe to stack them without any sort of adhesive?This would be on a patio outside of an apartment building, so I want to be able to easily disassemble them if I ever move.I have zero experience with this sort of thing, so any info/suggestions are greatly appreciated. via /r/DIY https://ift.tt/34nVn9w
