I made this to keep my cat off my computer.  It's not sharp enough to hurt her, but it's not comfortable to lay on.  Has worked for weeks now.  She doesn't lay on top of it anymore.

Depending in the nozzle size you use, you might want to stop before the top layers.  This print will highlight any retraction issues you might have. 

Size is 250x154mm for the full size, and the half-size is 130x154mm, for people with smaller printers.

You just print the model and snap the sections to size.  I just hold it down with tape, but you can affix it however you want.  It's not really stable enough to stand on it's own once you start breaking sections off. 

Cat tax included…..