I was occasionally getting jams where the J-Head hotend meets the Wades block. Partly due to me widening the filament wide opening there by accident. Either way I noticed that my J-Head hotend had some empty space right at the top by the filament path. I wanted to block this to minimize the risk of buckling/bending/jams.
I used the Wades block from Nopheads github repository and added a small "lip" to handle the described issue.
Since I've added this I haven't gotten any jamming the last few days from the same scenario where I previously got 2 jams in a row in 2 days.
Mendel90_Wades_Block_Fixed2.stl | 176.7KB |