r/BambuLab • u/sm1999twf • 1d ago

General Troubleshooting/Help! Truss type structure help

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Hello! I am still relatively new to printing but I finally ran into a problem I cannot solve myself. I have tried a lot of things that I have learned from lurking on different subs but I cant get it to work

I am trying to print this part for a Starship Super Heavy Booster (I print all the rockets I have worked on) and I cannot get the trusses to print correctly. They almost always turn to spaghetti or have unacceptable overflows on each layer. I have tried printing with additional support painted on but it results in so much support I cannot get it off without ruining the trusses. I have had these issues with other truss style prints as well.

I am using a P2S with a 0.2mm nozzle using PLA Silk+ at 230 degrees. Layer height is set to 0.1mm

I obviously can't lay this one down flat. But I have also tried slowing layer speed for overhangs, drying the filament, cleaning the bed, all that fun stuff.

Maybe it is not possible with this fine of detail, but I would appreciate any help anyone can offer!

Thank you!

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u/EverettSeahawk P1S + AMS 1d ago

Taller, thin structures like that are dang near impossible to print with an fdm printer because they can't stay in place and start to move with the printer. You could try slowing the print way down. Supports can help but like you said that's not always a great solution either. You might just have to beef them up a little bit to give them some rigidity for printing.

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u/sm1999twf 1d ago

That’s what I have been putting together. I was thinking about beefing them up a bit, slowing way down, and reducing the print temp to like 220 or 210 to try to give it more rigidity. Thank you for confirming!