Been a loooooooooong time since I’ve seen this guy share anything. Figured it was worth putting here. 
Originally shared by nop head
Probably because he’s so busy selling kits! Seems like he’s pulling off a roaring trade.
If anyone deserves to be making money off the RepRap movement it’s @nop_head . Good for him.
I just read his fix for jamming jheads. Mine have been doing that, and I can’t wait to try his fix.
I love @nop_head 's posts, this guy thinks deeply about this stuff.
Yeah, Nophead is The Man! If anyone is interested, you can read his entire blog in one huge PDF, available here : http://garyhodgson.com/reprap/2012/02/learning-from-hydraraptor/