Resin Handling After Printing

19min
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After printing, there will still be some resin left in the cassette. This resin can either be reused or disposed. Read through the options below. 
Reusing Resin
The resin that is left in the cassette after a print can still be used for printing. However, it must be free of debris (see Debris Detection below) and still be within its useful life.
One-part resins
Use within 24 hours. After 24 hours, filter resin back into bottle and dispense with a clean cassette. 
Two-part resins
Use within the resin’s pot life. See the protocol sheet for each resin for specific pot life durations.
Debris Detection
Debris in the resin can jeopardize printing by damaging cassettes and causing print failures or defects. Even small fragments (less than 1 mm) of cured resin or external debris can pose issues when they are squeezed between the window and the platform during printing. 
Detecting and removing these fragments improves print outcomes and reduces the overall cost of Carbon printers by safeguarding cassette health and longevity.
Checking for debris varies depending on the printer type you have.
M3 and M3 Max printers automatically detect debris
M1, M2, and L1 printers require manual detection of debris
M3/M3 Max - Automatic Debris Detection

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M1, M2, L1 - Manual Debris Detection
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M2 Debris Detection Video
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Using a clean, flexible silicone spatula
Run spatula in one direction across window
Check for cured resin stuck to the window, or loose in the liquid
Fully expose every part of the window
Repeat in perpendicular direction
L1 Debris Detection Video
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Using a clean, flexible silicone spatula
Run spatula in one direction across window
Lift spatula as needed to push resin
Continue across window until the complete surface is checked
Ensure there is no cured resin stuck to window, or loose in the liquid
Resin Level Detection
For M3 and M3 Max users, if you are continuing to print after the previous print ends, the printer will perform resin level detection to ensure there is the appropriate amount of resin to safely print the currently queued project.


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Reclaiming or Discarding Resin 
If you have finished printing with the resin currently in the cassette, you can either reclaim or discard it.
1-part resins may be reclaimed in their original bottle after filtering.
2-part resins must be discarded when the pot life is reached. See the protocol sheet for pot life.
M Series Pour Stand
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Use the pour stand to assist removing resin from the cassette. 
The pour stand is compatible with all M-series cassettes: M1, M2, M3, M3 Max.
When using, stand on the side with the Carbon logo.
This gives easy access to the lid and the funnel holder.
Place cassette into cassette mount on pour stand.
Left bumper has clearance for fingers.
M1 & M2 printer cassette: Curved side faces back of pour stand. 
M3 Max printer cassette: Cassette pour spout faces front of pour stand. 
Remove cap from container and place under funnel holder. 
Original resin bottle or liquid hazardous waste.
Reposition funnel holder as needed so funnel fits in bottle or waste container.
Place funnel in funnel holder.
Funnel tip must sit in bottle.
Place strainer in funnel. Strainer captures solid debris that can damage the cassette.One-part resins must be filtered when reclaiming for later use.
Tilt lid up to begin pouring resin through funnel into container. 
Monitor resin flow and move lid if necessary.
Use a clean, flexible, undamaged silicone spatula to assist resin drainage
Continue wiping until only a small amount of resin remains.
Use a towel as needed.
Clean spatula with towel. Use IPA if needed.
Never clean spatula with acetone, which damages silicone.
Push down on lid to lower empty cassette.
Remove cassette from pour stand.
Dispose of funnel and strainer, replace cap, and move container to storage.
Reference Cassette Care﻿ to clean cassette.
M2 Pour Stand
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One part resins may be reclaimed in their original bottle (filtered).
Two part resins must be discarded when the pot life is reached.
Hazardous waste
M Series Printer
Place cassette with unused resin near pour stand.
M2 Cassette - Turn cassette so curved side is facing away from you
M3 Cassette - Grab cassette by corners instead of handles
Place cassette into cassette mount on pour stand.
M2 Cassette Only - Curved side of cassette should face curved pour stand handle.
Remove cap from container and place under circular holder.
Original resin bottle OR Liquid Hazardous Waste
Funnel tip must sit in bottle.
1 part resins
One part resins must be filtered when reclaiming for later use.
Unfold strainer and place in funnel. Strainer will capture any solid debris from cassette.
Tilt cassette mount up to pour resin through funnel into container.
Pull forward until it stops, then release to hold in locked position.
Use a clean, flexible, undamaged silicone spatula to assist resin drainage.
Continue wiping until only a small residue of resin remains.
Wipe spatula clean with towel, dampened with IPA if needed. Never clean spatula with acetone, which causes damage.﻿
Lower cassette mount: Pull forward to unlock and guide back down.
Remove cassette from pour stand.
Dispose of funnel [and strainer], put cap back on, and move container to storage.
L1 Printer
Scoop out resin with a wide spatula into resin transfer container.
The cassette is too heavy to pour out unused resin.
The L1 cassette can be in the printer or on the cassette cart over a workbench.
Reclaim or discard resin from container as per the M2 steps.
Reference Cassette Care﻿ to clean the cassette.
L1 Printer
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﻿L1 cassette is not compatible with pour stand.﻿
Scoop out resin with wide spatula into resin transfer container.
﻿The cassette is too heavy to pour out unused resin.
20 - 27 kg (45-60 lbs)
The L1 cassette can be in the printer or on the cassette cart over a workbench.
Filter and resuse or dispose of collected resin as needed. 
Reference Cassette Care﻿ to clean the cassette.

Notes
Reference Cassette Care﻿ for cleaning the cassette after resin has been reclaimed or discarded.
Refer to the Safety course for more information on handling discarded resin﻿.
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Release Film
Washing