Creality Space Pi ECAS04 Adapter Plate

The only ECAS04 connector adapter I could find was https://www.printables.com/model/1225112-creality-space-pi-ecas04-fiting, which didn't have anything to secure the plate in place. So I decided to make one myself.

Printed in eSun PC-HT Black, with supports only on the underside of the chutes. The hex holes are aligned so that they don't need supports.

The ECAS04 hole has a 0.3mm tolerance (the widest diameter on an ECAS04 is 8.1mm, at least according to the measurements provided by the ECAS04 connectors I purchased - https://www.amazon.co.uk/dp/B099PD5CC7).

The filament guide is 5.3mm diameter at the entrance for ease of feeding. It then tapers down to 2.6mm diameter, to help guide the filament into the ECAS connector. The outer diameter has a slight chamfer, which should hopefully make a friction-fit seal. Whether it's actually air-tight, I don't know.

The mounting holes are M3, with a 0.4mm tolerance. Thank god for Sharpies. They make marking up drill holes a breeze.

I ended up using M3x12 screws, but it was a bit fiddly getting the nuts on. I ended up having to lay the space pi on the screen and prop the door open with my head in order to get enough leverage and vision to get the nuts on.

I'd say M3x16 would probably be more forgiving for getting the nuts on. As you can see from the second picture, there's plenty of room, even if you're using https://www.printables.com/model/1199283-desiccant-box-for-creality-space-pi-filament-dryer.

If you remix this design, please do as I've done, and provide both a STEP file, and a CAD project file. There's nothing worse than having to tweak the geometry of an STL.