Kossel Magnetic Effector

thingiverse

This is My WIP Kossel Effector for Magnetic Arms with Ball-Studs and an E3D V6. It Also Features a Y-Joint Built into the Effector Mounting Bracket to Allow for Single Nozzle Dual Extrusion. Note that while the preview screenshot contains a fan, I haven't finished that mount yet. Here's the G-Code I Use for Tool Change in Simplify 3D: ;BEGIN TOOL CHANGE G92 E0 G1 E-9 F[toolchange_retract_speed]; Retract Previous Tool G91 G1 Z5 F[travel_speed]; Lift G90 G1 E-40 F300 G1 E-[toolchange_retract_distance] F[toolchange_retract_speed] T[new_tool]; Switch to New Tool and Offsets G1 X[next_position_x] Y[next_position_y] F[travel_speed]; Move to Next Printing Location G92 E0 G1 E[toolchange_prime_distance] F1800; Prime New Tool G92 E0 G1 Z[next_position_z] F[travel_speed] ;END TOOL CHANGE Note that this absolutely requires a priming tower. The Key Insight in the G-Code is to do a normal retraction, a slow retraction to let the filament cool rather than making a long tail, then a long and fast retraction to get it all the way up the Y-joint. It's a balance - if you retract too quickly, you get a long tail on the filament and jam. If you retract too slowly, you get blobs. In this case, my retraction distance is 8mm, my retraction speed is 40mm/sec, my toolchange retraction distance is 90mm, and my toolchange retraction speed is 50mm/sec.