Love it! This is the filament cutter my merc has been waiting for.

any pictures or videos of it in action ?

so far it works great but i suggest getting a really thick walled piece of tube, i wore through mine pretty quick and was hitting the screw holding it!

atleast 2-3 mm wall i guess

Does this work with the Rapido?

One issue. It appears that if you use a screw to hold the cutting blade into place, it doesn't allow for travel into the holder. This wall needs to be raised about 3mm for space for a button head screw.