These stackable comb modules can be used to vegetate walls.
They're mounted with magnets - so works only if your wall is of Metal :)
But they can also just be stacked without magnets.
There are 3 different types: type A, B and C
The type A comb modules have overflow wholes that drain excessive water to the modules below. The bottom modules don't have any drain wholes and are the end point of exceeding water.
The type B modules don't have drain wholes at all and can be mounted individually at any hight of your wall without being stacked - with any distance from the next module.
Type C modules don't have bolts and therefore not space between the modules and the wall.
There are also two magentic distance bolts for type A and type B comb modules. I know, it's complicated.
Type A bolts can be used with one small 5x20mm magnet and are strong enough to hold the comb modules, if your bottom modules are standing on ground or on a table.
If you want to hang your combs at any hight of the wall, use Type B bolts. These fit 2 larger magnets of 7x30mm dimension and can hold your plant anywhere.
Drill holes into the bolts in order to screw or nail it to your wall.
On one of the pictures you can see a test setup on a table with the drip irrigation system called Blumat (the pic with the hoses). That's very sexy but not needed. You can irrigate also with the watering can the old fashioned way.
If irrigated by hand and not by a dripping system, the combs must be printed 100% water tight. Producing really water tight objects needs some testing with your printer and slicer. Slow down printing of the outermost perimeter by 50% for watertight printing.
If found out that simpliy3D has a function called multiprocessing. This allows repeated changes of print settings at any layer height, so that corners become water tight too.
inspired by www.hydroplant.ch
desinged with sketchup
sliced with simplify3d V2.2
printed with a renkforce RF1000 and Deltatower with PLA