- shrinkage
- dimensional accuracy
How much does ABS shrink? XY, Z and the compensation value
ABS shrinks about 0.4 to 0.8% in X and Y as it cools, but one printed-part study saw it grow 0.92% in Z. Figures by source, plus the OrcaSlicer values.
ABS shrinks about 0.4 to 0.8% in X and Y as it cools, but one printed-part study saw it grow 0.92% in Z. Figures by source, plus the OrcaSlicer values.
ABS vs ASA shrinkage: about the same. Resin and filament data sheets put both at roughly 0.4 to 0.7%, so start ASA with ABS compensation and measure.
Bambu Lab publishes no ABS shrinkage value. Start at 99.36% in Bambu Studio's Shrinkage field, then print a test cube and correct. PLA and PETG values too.
PETG-CF shrinks about 0.3 to 0.6%, against 0.54 to 0.76% for printed plain PETG. The published PLA-CF and ABS-GF figures, and why X and Y can differ.
Yes. 3D printed parts shrink as they cool, under 1% in X and Y for PLA, PETG and ABS. After that, only heat, moisture or a constant load changes their size.
Yes. Printed PLA shrinks along its print lines and grows in height once it passes its glass transition, about 55 to 61 °C. Below that it barely moves.
Yes, slightly and reversibly: a 100 mm PLA part loses 0.16 to 0.38 mm going from a 20 °C room to a -18 °C freezer. PETG loses about 0.19 mm.
Does PETG shrink? Yes, by under 1%: 0.54 to 0.76% in X and Y and 0.73% in Z in a printed-part study, close to PLA. Plus the value to enter in each slicer.
Printed PLA shrinks about 0.5% in X and Y and 0.8% in Z. The figures by axis, the molded resin value, and what to enter in OrcaSlicer, Bambu Studio and Prusa.
Yes, 3D printed resin shrinks as it cures: 3 to 6% by volume on maker data sheets, and about 0.3 to 0.6% in X and Y on measured printed parts.
Calibrate dimensional accuracy per material: fix e-steps and flow, print a test part, measure it, and turn the errors into XY, Z and hole compensation values.
Print dimensionally accurate nylon parts: dry the filament, control chamber and cooling, then compensate for print shrinkage and moisture swelling.