Compact OWL model defects / printability issues

[MisterHW]

Compact OWL as of https://github.com/geezacoleman/OpenWeedLocator/tree/68f2ee177ff4bf59b490357e216150cbcec619c8/3D%20Models/Compact%20OWL has a few issues affecting printability and the function of the o-ring face seals.

tray.stl

The bottom of the model is not flat, leading to most of the area not being exactly on the print bed

main-body.stl

The profile presents as a multi-part stl. Older slicers don't fuse everything into a single object, which causes the rails to be pinted separately, and they may or may not be bonded to the profile.

failed test print section:

frontplate.stl

The o-ring groove does not follow the main body cross-section.

partial recreation in FreeCAD

FreeCAD may not be the best choice for a redo, but I've recreated the extrusion profile and a blind end cap (which can then be cloned and specialized). This ought to give a glimpse into the workflow and level of hassle when using this particular CAD program.

OWL Compact FreeCAD example (plus 3mf, step).zip

Here's another view of the end cap with o-ring groove. It's not dimensioned absolutely correctly.

Note: 3D printed parts can be expected to exhibit some level of creep, especially since there is a heat source inside. Therefore, it's probably best to use Shore 15 EPDM foam o-ring material and a conservative amount of compression. Since the flat areas around the M5 holes butt up against main body, it's the depth of the groove w.r.t. this plane.