Kingoddball,

We open a cad program, define a circle, extrude it to one layer thickness, then save the .stl.

Then we bring it into slic3r with the object to print, and place one at each corner, then slice the entire group as one object (part of the discs overlap with the main object, no problems). We have discussed automating the process, since we already detect corners to define the skirt.

With just one layer thickness, it is very easy to trim off. Five layers high might be tougher to remove without blemishing the main work.

I've convinced the guys here to call them "Davopads" even after their initial drive for less cool nomenclature.

You can see a version in the "Four Parts" video in my signature, but this is one large pad versus four smaller ones.