Update: Added a V2 which uses standard M3 8mm bolt and M3 nut as these are easy to find and very common on eBay etc. V1 will use the original EezyCut bolt and nut which are non-standard sizing.

Diving knife that uses the Eezycut triloblades blades. Created from scratch as I wanted a thinner, more slick version (image shows my custom name on it, but the STL file is plain so you can customise or just print plain).

I printed mine on 0.12mm layer height to get detail and with all layers as a "top layer" to get 100% solid print and with supports (you will get a thin support on the blade cut out) but this means you can print nicer on top (and highly recommend ironing). May need a bit of sanding of the blade area after depending on how well your supports do. I used a flat head screwdriver to really smooth off the blade indented area.

Once printed, best to superglue in pin supports onto the blade cut out (supported) side for easier install of the blade. Also I have not included holes as I find printing small holes usually leads to poor strength or gaps so you will need a 2.5 - 3mm drill bit to drill the holes after (or add your own in the STL).

Creality

Ender 3

No

Yes

0.12mm

100% (I printed with all layers as top layer solid)

Recommend to use Ironing enabled for better skin. Requires supports to give the blade cutout room.