Why Layer Lines Exist
FDM prints by depositing material in horizontal layers. The layer height - typically 0.1–0.3 mm - determines the visible "staircase" effect on curved or angled surfaces. For vertical walls and flat horizontal faces, layer lines are minimal. For curved surfaces at 45°, they are most visible.
Option 1: Print-Ready (Standard)
Our standard finish is the part as it comes off the printer, with support material removed. This is appropriate for functional prototypes, internal components, and any part where appearance is secondary. Standard layer height of 0.2 mm produces a clean, consistent result.
Option 2: Fine Layer (0.1 mm)
Printing at 0.1 mm layer height doubles print time and cost but significantly reduces visible layer lines. Best for presentation models, consumer-facing prototypes, and parts with curved organic geometry. The difference is noticeable by touch and eye.
Option 3: Sanding & Priming
Parts can be wet-sanded progressively (120 → 320 → 600 → 1200 grit) and then primed. Primed parts take paint and powder coat well. This process is most effective on PLA and PETG; ABS can additionally be acetone-smoothed between sanding passes.
Option 4: Resin Printing
For the finest possible surface finish, switch to resin (SLA/MSLA). Resin prints at 0.025–0.05 mm layer heights and produces surfaces that feel smooth to the touch. Layer lines are visible only under strong raking light. Best for jewellery masters, dental models, and high-fidelity miniatures.
Choosing the Right Option
Match your surface finish to your end-use. A structural bracket behind a panel needs no finishing. A consumer product show-model needs at minimum fine layers and probably sanding. A jewellery casting master needs resin. Request our finishing options when submitting your quote and we will recommend the right combination.