A funnel for draining unused resin from the vat into a storage container. It makes it easier to pour by providing external air access around the funnel's spout.

A paper paint filter is inserted inside, cut off at the top by 1-2 centimeters. It can be stored away from direct sunlight in between uses.

It is suitable for most containers, but for added stability, I recommend using the lids from old containers with a hole in them.