2" Net Pot for Square 1.5" Rockwool Blocks

After trying to fit a square peg into a round net pot I decided to make this. I designed it for
1-1/2" (40mm) Grodan mini-blocks to go into the hole for a 2" net pot. From the bottom of the lip to the bottom of the net is 50mm. There are two versions, a standard fit and a snap in. The snap in is made for the thickness of PVC downspouts just like my snap in blanking cap.(http://www.thingiverse.com/thing:1688178)

Other Parts for my NFT hydroponic System

Downspout End Caps http://www.thingiv