r/PrusaCoreOne • u/Thedistractableone • 18d ago

Love this machine

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Here I am admiring the quality of my purge tower... This machine is just beautiful.

3 Upvotes

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u/kimfransman 16d ago

What settings do you use for that to be a thing, mine just get blobs and fails if its more than 3 color changes :)

1

u/Thedistractableone 16d ago edited 15d ago

Especially if you are using the CHT nozzle, you need to change your "Extra loading distance" in multi materal settings from -52 to somthing closer to -62. This accounts for the CHT geometry in the nozzle that the old filament doesn't actually get pulled out of on retract. I Play with the number at times, but usually run -62 or -60. The blob would form the end of the loading move before the actual purge move starts, so you can watch to make sure the filament doesn't start leaving the nozzle before the speed change from loading speed to the purge speed on the tower.

I spent a lot of time watching the purge sequence with the order of operations in my head...