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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Allegedly the UV reactive stuff can break down, so it may not cure properly.
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.
