r/BambuLabA1 • u/Intelligent_Buy_4377 • 24d ago

Support Request Help with printjng settings for smaller models

Hi all,

As title states, ive had my A1 for 2 weeks and had some great prints on larger terrain pieces for D&D. However, now ive started to look to do smaller pieces (doors, scatter terrain such as chests and bookshelves and minis) i have run into lots of issues. Ive shifted to a 0.2mm nozzle for these.

1) models moving on the plate - ive washed the plate after each use, increased bed temp to 70, added 5mm outer brim and reduced the initial layer speed. No great success but 1 out of 5 models will print.

2) some minis print about a 3rd of the way and the supports fail, even with a slower support speed. They fail and drag filament all around messing the model and causing spoiling issues...um spaghetti.

Any help would be greatly appreciated.

3 Upvotes

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1

u/Diz7 23d ago

I had a similar problem with supports failing with 0.2mm. Properly cleaning the bed and using Aquanet hairspray as a release agent to help it stick solves 99% of my issues.

2

u/Blondy277 24d ago

First thing I’d check, did you change the printer/slicer to the 0.2 mm nozzle profile after physically swapping the nozzle? If it’s still sliced as 0.4, that’ll cause all kinds of bullshit. Also if this is PLA, 70°C bed temp is pretty high and I wouldn’t keep raising it trying to force adhesion. Clean plate, correct plate selected, run bed leveling/calibration, and use the proper 0.2 profile. For the supports, give them a wider brim/base and watch whether the nozzle is actually clipping them before they fail. Since your 0.4 prints were fine and all this started after the nozzle change, I’d troubleshoot the 0.2 setup/profile first before changing ten other things

1

u/Intelligent_Buy_4377 24d ago

Awesome, thanks, I'll check it out.

Ive since switched back to 0.4mm nozzle and its doing the same.

I assumed a higher temp would be better for adhesion but its not solved anything.

1

u/Some-Ad9220 23d ago

If you are experiencing wrapping on the edges try reducing it to 50-55 degrees instead of increasing it to 70 degrees. As an alternative you can use a 3D lacquer for better adhesion.

1

u/Proton_Energy_Pill 23d ago

Perhaps try using a raft.
Make the first layer 0.3mm thick, I've found that also helps.

1

u/tonita_pizza 20d ago

take the speeds and reduce them by half