Because of the unusual mounting holes in the H-shifter from Simjack, I made a version of the mounting for a 30x30 mm. Slides in typical 3030 aluminium profile. Using M6 Mount holes for Simjack H Shifter and M6 bolts on the sides.
Before starting printing, you can check your fit:
"simjack_h_shifter_mount_test_fit.3mf"
The author marked this model as their own original creation.