Might as well warn you, it's work in progress so not totally optimized.
But it is a model that has given me a crazy pain in terms of errors and although there are still some it is printable.
The connections are a priori good but my printed test model being too small to be sure I have a pti doubt, a blow of file or a blow of lighter will do the job at worst.
I make this model available in order to avoid leaving it lying around on my hard drive because in fact I started it a while ago but having quite a few difficulties with it, I had dropped it.
So I made a printable version but I'll probably stay with it even though it's not definitive.
Or maybe one day....
Supports...all over the place.
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