u/KingWarpheus

I'm looking for objective feedback from experienced A1 Mini owners and FDM users.

My A1 Mini is less than one month old.

Over the past week I have invested more than 70 hours into troubleshooting and completed more than 50 test prints.

Issues include:

- repeated support failures

- poor underside quality

- overhang degradation

- inconsistent behavior

- quality variations across the build plate

- several additional mechanical concerns

So far I have tested:

- 0.2 and 0.4 nozzles

- Bambu PLA Basic and Matte

- multiple support strategies

- multiple slicer profiles

- temperature towers

- flow calibration

- flow dynamics calibration

- manual bed tramming

- factory reset

- full recalibration

I also compared identical projects on:

- another Bambu A1

- Ender 3

- Prusa Mini+

- Neptune 4

The comparison printers completed prints that consistently fail on my machine.

I have created a complete case summary including previous discussions and troubleshooting history:

https://forum.bambulab.com/t/a1-mini-70h-troubleshooting-still-no-root-cause-identified/257897

At this point I am no longer interested in assigning blame. I am simply trying to determine whether continued troubleshooting makes sense or whether a warranty replacement would be considered reasonable.

Hey everyone, I’m looking for some advice because I’m about to pull my hair out trying to get clean miniatures.

I’ve had my A1 Mini for about a week (working with Bambu Studio). I fully calibrated it following the ObscureNox YouTube guide, and my Bambu PLA Basic Grey is kept bone dry inside a Sunlu S4. I’m trying to print miniatures at 0.04mm and 0.08mm layer heights using the 0.2mm nozzle. I tried different orientations.

I have tried the popular community profiles (FatDragonGames, ObscureNox, HOHansen), but I just noticed that none of these actually customize the support tab—they just leave them on the slicer's defaults. The Reddit wiki says to use Tree Default, but I am stuck in a loop where my supports either break mid-print or weld completely to the model.

Here is what keeps happening (pictures attached):

- Resin2FDM (Pic 1): Tried the specific resin-style orientation and settings on a hyper-detailed Malediction model (15h+ print). It came out looking like blobby garbage with zero detail.

- Tree Strong (Pic 2): Same Malediction model. To prevent breaks, I tried Tree Strong. They wrapped around the back and cape of the mini and fused permanently. I can't remove them without destroying the plastic.

- Tree Default - Spaghetti (Pic 3): Went back to Tree Default on the Malediction model. The branches just snap or fail around the 50-70% mark, leaving a massive bird's nest.

- Tree Default - Snapping (Pic 4): Tried a much simpler Space Marine model (6h print) to see if it was just the model. Even with a massive brim keeping everything locked down, the main support trunks physically snapped in half halfway up the print. It looks like the nozzle is clipping them and knocking them over.

For context, I have no issues printing terrain with the 0.4mm nozzle, so the machine itself seems fine. It's just these micro-layers on the 0.2mm nozzle that are failing.

Since the community profiles don't actually configure the support tab, what manual settings are you guys running to make Tree Default actually work at 0.04mm/0.08mm? What Top Z distance, interface layers, or wall settings stop them from either welding solid or snapping mid-print?

Appreciate any help or screenshots of working support tabs!