Stepstruder MK7 Fan Shroud

thingiverse

This is a fan shroud and cold block spacer for Stepstruder MK7 extruders or similar. I designed this for the extruder included in the FolgerTech kit (based on the MK7) that helps to better cool the cold end block and prevent 'air prints' and jams. In order to install you need to remove the threaded portion of the hot end from the cold end block by loosening the set screw. Then rotate the cold block 180degrees, put it into the shroud and the screw the threaded portion into the other hole (which was threaded on my particular cold block). I also moved the two nuts from the hot end and used just one up against the cold block to keep it tight. This model has supports already modeled onto it. So don't tell your slicer to add any, it should print just fine. A brim or raft would help and a layer height of 0.2mm or less.