Problem → Fix. One line each. Resin printing issues solved fast.
Quick Fix Reference
Resin printing has different failure modes than FDM. Here's your problem → fix cheat sheet.
| Problem | Quick Fix |
|---|---|
| Adhesion Issues | |
| Nothing sticks to build plate | Re-level plate, check for protective foil, increase bottom exposure |
| Print detaches mid-print | Add more bottom layers, increase burn-in time |
| First layers separate | Check build plate flatness, clean plate with IPA |
| Edges lifting | Angle the model 5-10°, add raft or brim |
| Support Failures | |
| Supports breaking | Increase support density, use heavier supports |
| Model falling off supports | Add more contact points, increase contact depth |
| Supports too hard to remove | Reduce contact diameter, use light supports |
| Support marks on model | Use touch tips, orient to hide marks |
| Surface Issues | |
| Layer lines visible | Check focus calibration, may be underexposed |
| Rough/grainy surface | Filter resin, clean vat, check FEP condition |
| Blobbing or artifacts | Reduce exposure time, check for overexposure |
| Pixelation | Wrong resolution settings, check slicer config |
| Print Quality | |
| Prints warping | Reduce lift speed, check room temperature stability |
| Holes/gaps in print | Increase exposure, check for FEP damage |
| Overexposed details | Reduce normal exposure time |
| Underexposed details | Increase normal exposure time |
| Hardware Issues | |
| Screen not curing | Do dry run test, check screen connection |
| FEP film cloudy | Replace FEP film — degraded films cause failures |
| FEP film torn | Replace immediately — leaks damage printer |
| Resin not curing | Test with UV light — resin may be expired |
| Resin Issues | |
| Resin thick/syrupy | Warm to 25°C, stir thoroughly, may be old |
| Resin separating | Stir well before each print, check expiry date |
| Resin smells strong | Improve ventilation, consider low-odour resin |
| Resin not flowing | Room too cold — warm to 20-25°C minimum |
| Post-Processing | |
| Print tacky after wash | Extend IPA wash time, use fresh IPA |
| Print not fully cured | Increase UV cure time, ensure all angles exposed |
| White residue on print | Rinse in fresh IPA, may need second wash |
| Print cracking after cure | Over-curing — reduce UV exposure time |
Resin Temperature Guide
| Issue | Cause | Fix |
|---|---|---|
| Room under 20°C | Resin too viscous | Use heater, warm resin before printing |
| Room over 28°C | Resin curing too fast | May need reduced exposure times |
| Temp fluctuating | Inconsistent prints | Enclose printer, avoid drafts |
Ideal resin temperature: 22-25°C (72-77°F)
Exposure Quick Reference
| Resin Type | Bottom Layers | Normal Exposure |
|---|---|---|
| Standard Resin | 30-50s × 4-8 layers | 2-3s |
| Tough Resin | 40-60s × 6-10 layers | 3-5s |
| Flexible Resin | 50-70s × 8-12 layers | 4-6s |
| Water-Washable | 35-50s × 5-8 layers | 2.5-4s |
| Castable Resin | 40-60s × 6-10 layers | 3-5s |
| Dental Resin | Varies by brand — check manufacturer | Varies |
Always run exposure tests (like the Cones of Calibration or XP2 Validation Matrix) when using new resin. Settings vary by printer wattage and resin formulation.
Print Angle Guide
| Model Type | Best Angle | Why |
|---|---|---|
| Miniatures | 30-45° | Reduces visible layer lines on curved surfaces |
| Flat parts | 10-15° | Prevents suction cups, reduces peel force |
| Tall thin parts | Vertical or 5° | Minimises peel force on thin sections |
| Complex geometry | 30-45° | Self-supporting, fewer supports needed |
Golden rule: Orient to minimise cross-sectional area per layer — smaller layers peel easier.
Cleaning and Curing
| Step | Method | Time |
|---|---|---|
| IPA Wash | Submerge and agitate | 5-10 min |
| Second Wash | Fresh IPA (optional) | 2-3 min |
| Air Dry | Let IPA evaporate | 10-15 min |
| UV Cure | Rotate for even exposure | 5-30 min (resin-dependent) |
Safety Checklist
- Gloves: Nitrile gloves ALWAYS when handling resin
- Ventilation: Resin fumes are harmful — print in ventilated space
- Eye protection: UV glasses when inspecting screen or curing
- Spills: Clean immediately with IPA — uncured resin is toxic
- Skin contact: Wash immediately with soap and water
- Disposal: Cure resin waste before disposing — never pour down drain
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