Summary

The label maker hurts your hand when you use it, because the plywood edges are thin and sharp. This part clips on the spring spacers, and provides a large flat surface to spread the pressure and make it more comfortable to use.

The label maker is made from a kit from a monthly Eureka Crate, a subscription service from Kiwi Co. I'm not affiliated with them.

I printed it with a several perimeters, and several top and bottom layers, so that it would be mostly solid (especially in the flat hand part).