# Please help with prusaslicer multimaterial issues

**URL:** <https://forum.snapmaker.com/t/please-help-with-prusaslicer-multimaterial-issues/35068>\
**Category:** J1/J1s IDEX\
**Created:** [February 25, 2024, 10:47am UTC](https://forum.snapmaker.com/t/please-help-with-prusaslicer-multimaterial-issues/35068 "2024-02-25T10:47:59Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Rwide](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/rwide/32/27055_2.png) [@Rwide](https://forum.snapmaker.com/u/Rwide)\
**Post date:** [February 25, 2024, 10:47am UTC](https://forum.snapmaker.com/t/please-help-with-prusaslicer-multimaterial-issues/35068/1 "2024-02-25T10:47:59Z")

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I have a couple of problems with Prusaslicer when printing multimaterial.

1. Retarded purging:

Left extruder lays out a normal purgeline  
Right extruder lays out a normal purge line  
Right extruder lays another purge line to the left of the left extruders purgeline  
Left extruder lays another purge line on top of the first purgeline  
Wtf

1. Idle temp for inactive extruder doesn’t work.

I have Prusaslicer 2.7.1. Can someone please share a profile that works? Would be much appreciated. Thanks!

oh and btw, here is the current starting gcode in my prusaslicer:

;\*\*\*\*\* Snapmaker J1  
;\*\*\*\*\* Update : 20221222  
;\*\*\*\*\* Printer : [printer\_preset]  
;\*\*\*\*\* Profile : [print\_preset]

; ----- bed\_temperature\_0: {bed\_temperature[0]}  
; ----- bed\_temperature\_1: {bed\_temperature[1]}  
; ----- extruder\_temperature\_0: {temperature[0]}  
; ----- extruder\_temperature\_1: {temperature[1]}

; ----- initial\_extruder: [initial\_extruder]  
; ----- is\_extruder\_used (0): {is\_extruder\_used[0]}  
; ----- is\_extruder\_used (1): {is\_extruder\_used[1]}

M201 X20000 Y20000 Z500 E3000 ;snapmaker settings  
G28 ;home

{if 1==1} ;------------OPTIONAL  
M355 S1 P16 ;dim led  
{endif}

M82 ;absolute extrusion mode  
T[initial\_extruder]

{if is\_extruder\_used[0] && is\_extruder\_used[1]}  
T0  
G1 X-5 F6000  
M104 S{first\_layer\_temperature[0]} T0 ;preheat T0

T1  
G1 X332 F6000  
M104 S{first\_layer\_temperature[1]} T1 ;preheat T1

M190 S{(bed\_temperature[0] \> bed\_temperature[1] ? bed\_temperature[0] : bed\_temperature[1] )} ;wait for bed temp

{else}

{if is\_extruder\_used[0]}  
G1 X-5 F6000  
M104 S{first\_layer\_temperature[0]} T0 ;preheat T0  
M190 S{first\_layer\_bed\_temperature[0]} C3 W2 ;wait for bed temp

{else}  
G1 X332 F6000  
M104 S{first\_layer\_temperature[1]} T1 ;preheat T1  
M190 S{first\_layer\_bed\_temperature[1]} C3 W2 ;wait for bed temp

{endif}  
{endif}

{if 1==1} ;-----------OPTIONAL ;led effect  
M355 S1 P32  
G4 S1  
M355 S1 P48  
G4 S1  
M355 S1 P64  
G4 S1  
M355 S1 P96  
G4 S1  
M355 S1 P128  
G4 S1  
M355 S1 P255  
{endif}

{if 1==1} ;purge line -----------OPTIONAL  
{if is\_extruder\_used[0]}  
M109 S{first\_layer\_temperature[0]} T0 C5 W1 ;wait for nozzle temp  
T0  
G1 Z0.8 Y-0.5 F1500 ;move bed up fast  
G1 X50 F6000 ;position nozzle  
G1 Z0.4 F6000 ;set nozzle height  
G1 X163 E22.6 F1500 ;purge 113mm line / 22.6mm filament in 1.5sec  
{if is\_extruder\_used[1]}G28 X F6000{endif} ;park  
{endif}

G92 E0 ;reset extruder

{if is\_extruder\_used[1]}  
M109 S{first\_layer\_temperature[1]} T1 C5 W1 ;wait for nozzle temp  
T1  
G1 Z0.8 Y-0.5 F1500 ;move bed up fast  
G1 X276 F6000 ;position nozzle  
G1 Z0.4 F6000 ;set nozzle height  
G1 X163 E22.6 F1500 ;purge 113mm line / 22.6mm filament in 1.5sec  
{if initial\_extruder == 0}G28 X F6000 {endif} ;park

{endif}  
{endif}

;===== ready to go

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<div class="post-metadata">

**Author:** ![Rwide](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/rwide/32/27055_2.png) [@Rwide](https://forum.snapmaker.com/u/Rwide)\
**Post date:** [February 25, 2024, 11:09am UTC](https://forum.snapmaker.com/t/please-help-with-prusaslicer-multimaterial-issues/35068/2 "2024-02-25T11:09:19Z")

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Just found another issue. Cooling settings doesnt work either. This is just a nightmare 😔

When extruder 1 is printing. It has the cooling settings for extruder 2.

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<div class="post-metadata">

**Author:** ![Rwide](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/rwide/32/27055_2.png) [@Rwide](https://forum.snapmaker.com/u/Rwide)\
**Post date:** [February 25, 2024, 4:07pm UTC](https://forum.snapmaker.com/t/please-help-with-prusaslicer-multimaterial-issues/35068/3 "2024-02-25T16:07:02Z")

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Never mind. Updated to macdylan latest config files. Everything works now 😀

> **[GitHub - macdylan/3dp-configs: My 3DP Configs](https://github.com/macdylan/3dp-configs)**
>
> My 3DP Configs. Contribute to macdylan/3dp-configs development by creating an account on GitHub.