K1C Exhaust Duct Fittings

END FITTINGS

This set of models includes 5 part files for various scenarios of venting your Creality K1/K1C exhaust outside. It's especially good for when printing fumey filaments like ASA or ABS where that half-filled OEM carbon “filter” that came with the K1C just isn't going to do much. 

1 - A 90-degree fitting that presses onto the back of the K1C in place of the carbon filter that came with it. The fitting accepts a 3-inch diameter coil hose that can carry the fumes to a window.

2 - A 90-degree fitting that will fit in a sliding window. Add a thin piece of plywood or coroplast above and/or below it so the window can “close” and the K1C can still exhaust out the window. 

3 - There is also a straight fitting that presses onto the back of the K1C and attaches the 3" hose when that makes sense. 

4 - Likewise, a straight fitting for the window end of the hose when that works better. 

5 - And for when you want to rotate the 90 degree corner to come out at a strange angle (e.g., down and to the right) you can press the corner duct only piece onto the straight Back or Window piece to get the right angle for your setup. 

EXHAUST HOSE

I used this exhaust hose along with the end fittings listed above.  https://www.amazon.com/dp/B07QK6FVNX

The linked exhaust hose has decent construction with a foil inside layer and rubberized outside later and metal spiral wire to keep it's shape. It comes with two hose clamps that work well with these ducts for mounting the ends of the hose to the printer and window (or wall). I got the 3"x16' option. The 3"x8' option would probably have worked, but the 16' version allowed for easier routing and was only $3 more. 

PRINTING NOTES

I printed mine with PETG. It takes a little more heat than PLA, and it has a little more flex to press-fit better onto the back of the K1C. 

The corner pieces can be printed in the orientation shown in the slicer window snips with very little support required for the end plates on the back and window corner pieces. The corner-only and straight-window pieces should print without support. The straight-back piece will need support in any orientation. I'd recommend printing it with the square side down (with brim) and round side up.