A mount i made to fit my Creality Space Pi X4 on top of the K1C. You can probably use this for the Creality CFS also. (or other things you want to store on top of your printer)

Will fit both directions on a K1/K1C (or others with same measurements).

On the attached picture that shows the weights on top of the riser it holds 18 kg (39.7 lbs) So it should be strong enough to mount cfs/space pi x4 without any problems. (PETG, 3 wall layer, 30% infill)

No support needed when printing.

No screws or other attachment needed to install, simply place it on top of your printer frame.

Please note that you may need to adjust the locking model depending on what material you print the riser in. My experience is that you need to resize the 30mm sides -0,5mm to make it fit when printed in PETG.

Two 12mm holes on top, 2mm deep, if you want to secure wider floor structure on top of the mount.