Why to filter resin
When pouring resin from your resin tank back into the bottle, it's important to pour it through a mesh filter. The mesh filter will allow liquid resin to pass through, but will trap any partially-cured resin or debris from contaminating your entire bottle. In order to protect the long-term usefulness of your bottled resin, we recommend filtering resin every time you pour it back into the bottle. This is especially important to do after a failed print.
How to filter resin
To filter resin, simply pour it back into the bottle through a mesh tea strainer or other mesh filter. Take care to pour slowly, as the fine mesh can slow the passage of resin into the bottle.
Always check the bottom of your tank and the inside of the filter for bits of uncured resin, as they can be symptoms of print issues that you may not otherwise be able to see.