Magnetic tool change

[juan74]

Hello,
I made my prototype of 3D printer where I have same magnetic toolchange like you can see on the video here: https://www.youtube.com/watch?v=0ARCip5CrUk I tryied to generate config by RRF config tool ( https://configtool.reprapfirmware.org/Start ) but for toolchange it offers only XYZ position. To lock I have to go to position XYZ, but to grip tool I have to go more further = 5mm forwards in axis Y. Does anybody has same construction and can provide answer or "config.json" ?

[rjenkinsgb]

The entire tool pickup sequence for each tool should go in the tpre(n).g file; just the definition of the tools themselves - extruder, heater, fan etc. - in config.g

eg. This is my tpre0.g for tool zero using the E3D toolchange system:

; tpre0.g
; called before tool 0 is selected

; Verify X & Y are referenced before any tool action
if !move.axes[0].homed || !move.axes[1].homed
	M98 P"homey.g"
	M98 P"homex.g"
	M98 P"homec.g"

G91
G1 Z5 F15000
G90

;Unlock Coupler
M98 P"/macros/Coupler - Unlock"

;Move to clearance position
G1 Y200 F25000

;Align
G1 X300.0 Y220 F25000

;Pick up position
G1 X300.0 Y298.0 F2500

;Close Coupler
M98 P"/macros/Coupler - Lock"

;Move Out
G1 X300.0 Y220 F4000

Each tool also has a tfree(n).g that is very similar but to return/unclamp the tool.

If the config tool has created tpre0 etc. already, just edit the sequence of moves in them to match the exact mechanics and system on your printer.

The coupler - lock and coupler - unlock macros have the commands to clamp or release whatever tool the head is aligned with.