Resin Standard Operating Procedures: Difference between revisions

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Resin Standard Operating Procedures (view source)

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Standard Operating Procedure (SOP)
Standard Operating Procedure (SOP)
Title: Resin 3D Printing Process
Title: Resin 3D Printing Process
Revision: 1.0
Revision: 1.0
Prepared by: Jeffrey Drake
Prepared by: Jeffrey Drake
Date: 2025-12-01
Date: 2025-12-01


1. Purpose
1. Purpose
This SOP outlines the safe and consistent process for producing parts using a resin-based (SLA/DLP/MSLA) 3D printer. It includes setup, printing, two-stage washing, UV curing, and resin recovery for reuse.
This SOP outlines the safe and consistent process for producing parts using a resin-based (SLA/DLP/MSLA) 3D printer. It includes setup, printing, two-stage washing, UV curing, and resin recovery for reuse.


2. Scope
2. Scope
This procedure applies to all personnel using resin 3D printers within the workshop or lab environment. It covers all standard photopolymer resins used in hobbyist or professional desktop resin printers.
This procedure applies to all personnel using resin 3D printers within the workshop or lab environment. It covers all standard photopolymer resins used in hobbyist or professional desktop resin printers.


3. Responsibilities
3. Responsibilities
Operators: Follow this SOP during every print cycle.
 
Supervisors: Ensure equipment maintenance, material safety data sheets (MSDS) availability, and PPE compliance.
Members: Follow this SOP during every print cycle.
Technicians: Perform regular cleaning and calibration of the printer and curing stations.
 
Supervisors: Ensure equipment maintenance, material safety data sheets (MSDS) availability, and PPE compliance. Perform regular cleaning and calibration of the printer and curing stations.


4. Required Equipment & Materials
4. Required Equipment & Materials
Resin 3D printer (SLA, DLP, or MSLA type)
 
Two-stage wash stations (e.g., dual IPA or cleaning solution baths)
* Resin 3D printer (SLA, DLP, or MSLA type)
UV curing station (enclosed and shielded from ambient light)
* Two-stage wash stations (e.g., dual IPA or cleaning solution baths)
Resin bottles and funnels with nylon mesh filters
* UV curing station (enclosed and shielded from ambient light)
Resin vat and build plate
* Resin bottles and funnels with nylon mesh filters
Personal Protective Equipment (PPE):
* Resin vat and build plate
Nitrile gloves
* Personal Protective Equipment (PPE):
Respirator (optional, recommended in low-ventilation environments)
** Nitrile gloves
Safety glasses or face shield
** Respirator (optional, recommended in low-ventilation environments)
Lab coat or apron
** Safety glasses or face shield
** Lab coat or apron


5. Safety Precautions
5. Safety Precautions
Handle uncured resin with gloves at all times.
 
Avoid inhalation of vapors.
# Handle uncured resin with gloves at all times.
Keep resin containers tightly sealed and out of direct sunlight.
# Avoid inhalation of vapours.
Dispose of resin-contaminated materials (paper towels, gloves) according to local hazardous waste regulations.
# Keep resin containers tightly sealed and out of direct sunlight.
Never pour resin or IPA down the drain.
# Dispose of resin-contaminated materials (paper towels, gloves) according to local hazardous waste regulations.
# Never pour resin or IPA down the drain.
 
6. First Aid Measures
6. First Aid Measures
{| class="wikitable"
!Contact
!Directions
|-
|Inhalation
|Remove casualty to fresh air and keep warm and at rest. Give oxygen or artificial respiration if necessary. In case of doubt or persistent symptoms, always consult a physician.
|-
|Skin Contact
|Remove contaminated clothing and shoes. Gently wash with plenty of soap and water. In case of doubt or persistent symptoms, always consult a physician.
|-
|Eye Contact
|Rinse immediately carefully and thoroughly with eye-bath or water. Remove contact lenses, if present and easy to do. Continue rinsing. In case of doubt or persistent symptoms, always consult a physician.
|-
|Ingestion
|Rinse mouth thoroughly with water. Do not induce vomiting. Get medical advice/attention.
|}


Inhalation
Remove casualty to fresh air and keep warm and at rest. Give oxygen or artificial respiration if necessary. In case of doubt or persistent symptoms, always consult a physician.
Skin Contact
Remove contaminated clothing and shoes. Gently wash with plenty of soap and water. In case of doubt or persistent symptoms, always consult a physician.
Eye Contact
Rinse immediately carefully and thoroughly with eye-bath or water. Remove contact lenses, if present and easy to do. Continue rinsing. In case of doubt or persistent symptoms, always consult a physician.
Ingestion
Rinse mouth thoroughly with water. Do not induce vomiting. Get medical advice/attention.


7. Procedure


6. Procedure
6.1. Pre-Print Setup
6.1. Pre-Print Setup
Above all, keep the resin to the resin area. Never allow it to drip on the floor, only surfaces that are designed to be cleaned.
 
Inspect the printer’s resin vat and build plate for cleanliness and damage.
# Above all, keep the resin to the resin area. Never allow it to drip on the floor, only surfaces that are designed to be cleaned.
Shake the resin bottle gently to ensure even pigment distribution.
# Inspect the printer’s resin vat and build plate for cleanliness and damage.
Avoid contact with the bottom of the vat with resin contaminated gloves.
# Shake the resin bottle gently to ensure even pigment distribution.
Move the vat to a clean silicone mat.
# Avoid contact with the bottom of the vat with resin contaminated gloves.
Pour resin into the vat up to the manufacturer’s recommended fill level.
# Move the vat to a clean silicone mat.
Verify no resin is leaking out.
# Pour resin into the vat up to the manufacturer’s recommended fill level.
Verify printer settings, layer height, and exposure times in the slicing software.
# Verify no resin is leaking out.
Start the print and monitor the first few layers for adhesion.
# Verify printer settings, layer height, and exposure times in the slicing software.
# Start the print and monitor the first few layers for adhesion.


6.2. Post-Print Removal
6.2. Post-Print Removal
After printing completes, raise the build plate.
 
Allow excess resin to drip back into the vat for a few minutes.
# After printing completes, raise the build plate.
Detach the build plate, and use the orange squeegee to get as much resin off the build plate back into the vat.
# Allow excess resin to drip back into the vat for a few minutes.
Transfer the build plate to the silicone baking dish to the work area.
# Detach the build plate, and use the orange squeegee to get as much resin off the build plate back into the vat.
Use the metal scraper to carefully detach the print from the build plate.
# Transfer the build plate to the silicone baking dish to the work area.
# Use the metal scraper to carefully detach the print from the build plate.


6.3. Two-Stage Washing Process
6.3. Two-Stage Washing Process
Stage 1 – Gross Wash:
Stage 1 – Gross Wash:
Submerge the print in the first wash station (containing used IPA).
 
Agitate gently or use the wash station’s built-in agitation cycle for 2–3 minutes.
# Submerge the print in the first wash station (containing used IPA).
Remove and allow excess liquid to drip off.
# Agitate gently or use the wash station’s built-in agitation cycle for 2–3 minutes.
# Remove and allow excess liquid to drip off.
 
Stage 2 – Final Rinse:
Stage 2 – Final Rinse:
Submerge the print in the second wash station (with fresh IPA).
 
Agitate again for 1–2 minutes to remove any remaining uncured resin.
# Submerge the print in the second wash station (with fresh IPA).
Remove and place the part on a clean, absorbent surface to air-dry for 5–10 minutes.
# Agitate again for 1–2 minutes to remove any remaining uncured resin.
# Remove and place the part on a clean, absorbent surface to air-dry for 5–10 minutes.


6.4. UV Curing
6.4. UV Curing
Place the cleaned print in the UV curing station.
 
Cure for the manufacturer’s recommended duration (typically 5–15 minutes, depending on part size and resin type).
# Place the cleaned print in the UV curing station.
Rotate or reposition the part halfway through if needed for even exposure.
# Cure for the manufacturer’s recommended duration (typically 5–15 minutes, depending on part size and resin type).
Allow the part to cool before handling.
# Rotate or reposition the part halfway through if needed for even exposure.
# Allow the part to cool before handling.


6.5. Resin Recovery & Storage
6.5. Resin Recovery & Storage
After the print is complete and the vat is no longer needed:
 
Place the resin bottle in the holder to prevent spills.
# After the print is complete and the vat is no longer needed:
Insert a funnel with a fine mesh or paper filter into the bottle opening.
# Place the resin bottle in the holder to prevent spills.
Carefully pour unused resin from the vat through the filter into the bottle.
# Insert a funnel with a fine mesh or paper filter into the bottle opening.
This removes cured particles or debris.
# Carefully pour unused resin from the vat through the filter into the bottle.
Wipe the vat clean with lint-free paper towels or soft cloth.
# This removes cured particles or debris.
Store resin bottles sealed and upright, away from UV light and heat sources.
# Wipe the vat clean with lint-free paper towels or soft cloth.
# Store resin bottles sealed and upright, away from UV light and heat sources.


6.6. Cleanup
6.6. Cleanup
Wipe down all work surfaces with paper towels moistened with IPA.
 
Place filter into silicone baking tray and cure with the portable UV light, cover with UV curation station cover.
# Wipe down all work surfaces with paper towels moistened with IPA.
Wash hands thoroughly after glove removal.
# Place filter into silicone baking tray and cure with the portable UV light, cover with UV curation station cover.
# Wash hands thoroughly after glove removal.


7. Maintenance
7. Maintenance
Replace IPA or cleaning fluid in wash stations when visibly cloudy or after several uses.
 
Clean the curing station window periodically for optimal UV transmission.
# Replace IPA or cleaning fluid in wash stations when visibly cloudy or after several uses.
Re-level the build plate as needed.
# Clean the curing station window periodically for optimal UV transmission.
Perform routine firmware or software updates for printer reliability.
# Re-level the build plate as needed.
# Perform routine firmware or software updates for printer reliability.


8. Records
8. Records
Maintain a print log including:
Print date and operator
Resin type and batch number
Wash/IPA replacement schedule
Notable print issues or defects


9. References
# Maintain a print log including:
Resin manufacturer’s technical and safety data sheets (TDS/MSDS)
## Print date and operator
Printer and curing station manuals
## Resin type and batch number\
Local hazardous material handling regulations
## Wash/IPA replacement schedule
## Notable print issues or defects
 
9. References (WIP)
 
# Resin manufacturer’s technical and safety data sheets (SDS)
# Printer and curing station manuals
# Local hazardous material handling regulations
Jeff.drake
3

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