I'm planning to 3D print a zoom gear for the Sony 28-60mm lens. Does anyone know how many teeth the Nauticam N100 port system uses for zoom gear?

It should be 84.

Edit: Or maybe 85? The design I use has 84, but the one linked to below has 85. I can't remember what I based my design on, but it might have been from someone else's design who had potentially miscounted. Either way will likely work.

Edited 21 hours ago21 hr by Isaac Szabo

There is one here:

https://waterpixels.net/forums/topic/671-proven-3d-printed-parts-for-underwater-imaging/page/4/#findComment-15804

The gear works well, mines a bit hard to get on the lens but that's probably my printer not being calibrated properly - I might reprint it at 101% but I don't have the port so haven't got around to trying that yet.

I design all my gears to use a printed tpu rubber collar. This makes it much easier to get a snug fit with a little bit of slip. Put the rubber collar on the lens. Then slip the hard plastic gear over the collar.