I print yard props. Not desk minis. The files that look great on Printables usually die outside in a week. Same four mistakes, every time:

1. Walls that are basically paper.

A 0.8 mm shell is fine for a figurine. A 3-foot tombstone in October wind is a sail. I run 4–5 walls and 20% gyroid. If it has a stem (lantern, scythe, fence post), I drop a 10 mm inner cylinder in the slicer as a modifier. Looks identical. Doesn't snap.

2. PLA on a sunny porch.

PLA starts going soft around 60°C. Dark filament on asphalt in September will warp a flat base overnight. PETG or ASA for anything that lives outside. I still prototype in PLA — I just don't ship that as the outdoor file.

3. No stake, no footprint.

A cool silhouette with a 120 mm base will eat dirt the first time a kid runs past. I design a 200 mm+ pad and a 12 mm hole for a garden stake. If your STL doesn't have a hole, add one before you print 18 hours of filament.

4. First layer on a 300 mm part.

Large flats hate dirty beds. Wash with dish soap, not just IPA. Brim on anything taller than it is wide. If corner 3 lifts, the whole prop is scrap.

That's the bar I design to. If a file can't survive a weekend on a lawn, it doesn't go in the pack.