I mix a lot of epoxy in small batches, but I’ve seldom had the right size container on hand. I solved this problem by drilling 1-1/2-in. holes in 2×4 scraps with a Forstner bit. The resulting shallow “cups” allow easy mixing without the risk of spilling. When the holes are used up, I just make a new mixing board. — Bill Wells. Save your takeout utensils to use in the shop!
With a pencil and a protractor, divide the larger disc into 30-degree wedges to create 12 center lines for the bottle indents. Center and trace the smaller disc on top of the larger disc. Next, with a drill press, drill 3/8-in.-deep holes on the 12 center lines with the 1-7/8-in. Forstner bit, spacing them between the disc’s outer edge and the traced circle. Next, divide the smaller disc into 60-degree wedges and drill six more 3/8-in.-deep holes with the Forstner bit.