Screw scrubber to use with foam plastic

After printing the Super screw scubber, I came to think of a little improvement to it: I added sides/supports for a piece of foam plastic, to fine finish the job, pls. see the pictures. The piece of foam doesn't have to be glued, so it's easy to swap it to a clean one. Please see the excellent original design, too, by Adam L. Printed it with generic PLA, 0.25 nozzle, 0.10 mm layer height and 15 % Honeycomb 3D infill.