Can't get XL to nozzle clean or bed level with PP filament on ANY of the printheads.
 
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Can't get XL to nozzle clean or bed level with PP filament on ANY of the printheads.  

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Nanoplane
(@nanoplane)
Active Member
Can't get XL to nozzle clean or bed level with PP filament on ANY of the printheads.

Driving me nuts... Regardless of which printhead i load the filament on, if it's Polypropylene, it won't get pass cleaning the nozzle and if I ignore the cleaning stage, it won't get pass the bed leveling.. (just goes in little circles around each point then gives up... 

If the filament isn't PP, the everything works fine... 

nozzle isn't oozing..
nozzle is brushed clean before it starts.

I'm using the Prusa PP build plate.

 

This topic was modified 6 hours temu by Nanoplane
Opublikowany : 10/02/2026 4:18 am
Nanoplane
(@nanoplane)
Active Member
Topic starter answered:
RE: Can't get XL5 to nozzle clean or bed level with PP filament on ANY of the printheads.

Yes, it's an XL5 ....

Opublikowany : 10/02/2026 4:27 am
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Can't get XL to nozzle clean or bed level with PP filament on ANY of the printheads.

Before I formulate a solution, I would like to know whether you have 6.2.6 or 6.4.0 installed.

Prusa Core One - Comfortable height display
Prusa Core One - Fast & Clean Start Gcode
Prusa XL - Quick Start Gcode
Opublikowany : 10/02/2026 6:36 am
Diem
 Diem
(@diem)
Illustrious Member

I don't think any of the forum regulars are frequently printing PP.  Am I wrong?  In which case you may be better advised to contact Prusa Support via chat.

Cheerio,

Opublikowany : 10/02/2026 6:38 am
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Can't get XL to nozzle clean or bed level with PP filament on ANY of the printheads.

I don't think any of the forum regulars are frequently printing PP.  Am I wrong? 

There's some truth in that!

In fact, I tend to believe that this is a filament-related issue.Since I assume that 6.4.0 is installed, there are only two ways to help the author of the post: either downgrade to 6.2.6 or adjust the G-code.

Prusa Core One - Comfortable height display
Prusa Core One - Fast & Clean Start Gcode
Prusa XL - Quick Start Gcode
Opublikowany : 10/02/2026 6:44 am
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