Riser for IKEA BEDDINGE LÖVÅS Sofa Bed

My Neato robot vacuum was having a hard time with my IKEA Beddinge sofa bed. Sometimes is was not able to get under the bed, and sometimes it *was* able to get under, but couldn't make it back out. Not sure how that works...

This is a 10mm riser with 20mm sleeve that will fit around the 60mm diameter legs of the IKEA Beddinge sofa bed. It has filleted edges at the bottom, you know, because that's nice.

After making this I found http://www.thingiverse.com/thing:122187, and maybe I should h