While labor saving devices are neat, mixing epoxy glue with a beater seems like overkill. Most of your epoxy batches will probably be less than 6 ounces, even when wetting out the hull. My preference is for coffee stir sticks for small 1-2 ounce batches, and icecream sticks for larger ones. Mix for 30 seconds, tap the container on a table to let the bubbles out, and your ready to go. I like to use disposable plastic medicine cups for mixing, which I buy in sleeves of 50. Throw the stick & the cup out after use, and start over, with no clean up. Safe, clean, and you don't have a risk of getting throwing resin around the room.