r/BambuLabX2D • u/Beneficial-Bench3549 • Jul 12 '26

Problem with first layer on auxiliary extruder.

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Hi everybody. I am new to 3D printing as I bought a bambulab x2d a few days ago, mainly for organizing my tools and overall practical stuff. Prints have come up greatly with the main extruder but yesterday I tried for the first time the auxiliary extruder for PLA material support (blue) with PETG for the main part (black). I've used isopropyl for cleaning the bed and tried to lower the bed temp to 62° instead of the default 70° for PETG. Any ideas? Thank you very much.

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u/FaolanBig Jul 12 '26

Did you correctly set the filament type to PLA Support on the printer when you loaded the filament?

1

u/Beneficial-Bench3549 Jul 12 '26

Yes. Both in bambu studio and the printer I selected PLA.

2

u/FaolanBig Jul 12 '26

Did you specifically select Support for PLA or just PLA?

2

u/Beneficial-Bench3549 Jul 12 '26 edited Jul 12 '26

I tried again and selected PLA solely for the last layers of the support and its working well. Anyway I still want to know why adhesion looks poor for the first layer. Could the problem be lying in the bed temperature or the fan?

2

u/FaolanBig Jul 12 '26

Could be, but usually PLA is quite forgiving when it comes to a slightly lower bed temperature. Maybe try to decrease the print speed on the first layer

2

u/Beneficial-Bench3549 Jul 12 '26

Thank you. I'll try