Very nice-looking and easy print. I used the 4 screw variant found on Thingiverse. It worked on my K1C, except the hole that screws into the fan mount was off a little bit. I just drilled a new one underneath it. It's hardly noticeable but definitely going to be weaker since its just through the infill. Overall, I think it turned out great. Would be cool to utilize that screw that is above the spool not being used to add another section of honeycombs that fill into the others. I used M3x8mm screws, and they fit just right. Also, I would recommend if you have a K1C to take off the bottom panel and put some slack in the wires for the filament sensor. Mine were extremely tight because they were zip tied in the bottom. Seemed like the regular K1s had plenty of slack on the wire already.