SenseCAP T1000-E Molle and 20mm Strap Mount Holster TPU Dog Tracker Case

Mount/holster/case for the SenseCAP T1000-E LoRa tracker, specifically for Meshtastic dog tracker usage.

Parametric FreeCAD file to allow customization and adjustment, but the model is a bit messy, so I would expect only minor adjustments to work without breaking something.
The extra strap length for locking over the screws is the main point that needs tweaking, but the provided STLs also work.
The thickness on the molle version is a bit much, making the whole thing very stiff and a bit bulky, but that should be possible to adjust easily in the freecad design. 

Prints in one piece without supports layed out flat and folds into shape, flexble filament (generic TPU) required.
The mounting straps have three functions: hold the folded shape together, mount it to the Molle webbing or 20mm flat nylon strap (size of the straps on all our dog harnesses), and latch the case closed with the tracker inside.
They weave through the case itself and around the nylon webbing inspired by the common Molle mount systems, and lock over M3 screw heads to securely close the case.

The tracker is slid in from one side by first bending the solid bar out of the way (see pictures) then the bar folds back and retains the tracker. the straps lock into the screw studs in the bar to additionally secure it against accidental opening.

Ideally use flat or lens head screws, but I only had countersunk on hand when assembling and it holds securely even with these.
To mount the screws, either use M3 lock nuts, or regular nuts plus thread locker. 
I would use stainless steel to avoid corrosion if water gets trapped between the nut and the surrounding TPU.

Has been in use for a month now and holds up well, getting the tracker out again for charging can be a bit stiff, but you can just "squish" the rear of the case to push it out, which works reasonably well.