Charmast 100W USB-PD Battery holder for LWS rod mount

Needing extra power for a Blackmagic Cinema Camera, I found a USB-PD cable that give the 12V output required. I knew the Charmast powerbank (https://www.amazon.co.uk/Charmast-23800mAh-Delivery-Portable-Compatible/dp/B08ML1PHB2) supplied this, so starting thinking about how to mount it to the camera.

I bought a couple of Smallrig LWS rod mounts, which come with two short and two long ¼"-20tpi screws. So I designed a clamping system that grips the powerbank using one of the long screws and is fastened to the rod mount using two short screws. This design uses the screws to cut a thread in the plastic, but if I get hold of some ¼"-20tpi heatset inserts I'll provide a second version with the holes sized for those.

The clamp can be mounted either perpendicular to the rods or in parrallel with them allowing you to keep the rig short if that's important to you.

Printing requires supports - I went with tree supports set to base-plate only.

I've been printing it with the four-hole pad on the bed, although you could print it on its side if you didn't mind cleaning up one side of it.