I was cleaning out my project closet the other day and I found an entire bottle of resin for my printer, still sealed and unopened… but it is several years old at this point.
I didnt see an expiration date or anything on it, so I just wanted to ask before I open it and potentially make a huge mess… Does Resin Expire or otherwise go bad with time if its factory sealed? or in general?
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It does expire.
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I used resin that had expired for a whole year.
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If it doesn’t print/cure properly it is “expired”. Shouldn’t cause any serious harm to the printer or additional safety hazard. So just go for it.
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It should be fine if it was completely sealed and not exposed to light. Worse case I would just expect it to have hardened.
The black plastic tubes don’t block 100% UV so place it in a dark corner of a room.
Besides light, temperature can also cause degradation.
Oxygen might as well slowly oxidize the photosensitive catalyst.
It sloshes around real nice when shaken.
Allegedly the UV reactive stuff can break down, so it may not cure properly.
