If you have a WASP 3d printer, and you use the clay extruder, you must use a 19 wrench to unmount the front tube joint. Standard 19 wrench are big and heavy, so I created this one that is more agile and comfortable.
Use 0.4 or 0.35 mm nozzle, 0.2 layer height, min. 4 shells, 1,4 top and bottom thickness and 22% infill. If you place the wrench in his natural position on print bed (see 2nd image) no supports are needed. Add min. 10 brim perimeters in 1' layer if you print the wrench in ABS.
Detailed instructions here: http://www.cosmo3d.it/la-chiave-da-19-che-mancava-al-kit-wasp-per-l-argilla.html
If you like this. please place a like here: http://www.facebook.com/cosmo3d