Background: We purchased a used PureWash unit on eBay, and it didn't come with any mounting equipment. I modeled this in Fusion360 to resolve that.
I split it into two parts so it would fit onto my Ender 3 S1 bed. I printed with four walls which results in no infill. Supports are needed. Print took 2.5hrs to complete.
I accidentally made the holes a bit too small, so I ended up drilling them out to size (3/16" for the screws I used).
It takes a small amount of wiggling and downward force to seat it, but the fit is perfect. The two pieces are designed to be butted flush together. Seems plenty strong. I've also had to remove the unit a couple of times to troubleshoot a leaking issue. May need to replace the unit, but I'll plan to re-use the mount even if the new unit comes with the OEM bracket.
The author marked this model as their own original creation.