ISO industrial pulleys and spools

I'm slightly unclear if you mean just static modeling this for display or the intent to actual move and animate the scene?

If you mean animate, then parts from the 3D printer design days might come into play. We used 624 and 623 Metric V groove pulleys that are somewhat of a commodity item (you can find on the bay or A site). Also, there were 3D printed pulleys and they can be scaled or used with a parametric function like OPENSCAD. Most often we identify them by shaft or bore size, and then select the outer diameter.

A source I used for commercially made small pulleys and gears (especially if you wanted to make kits and sell something with standardized parts) was SDP-SI https://www.sdp-si.com/product...lt-Pulleys/index.php

Again, for something like this kind of custom project, another great tool to have in the toolbox is OpenSCAD because you can scale and model and customize all without having to know a lot about CAD https://openscad.org/

Basically something like this https://www.thingiverse.com/thing:159208/files

You grab the parametic file  "pulley_parameterised.scad" and open using OpenSCAD, adjust the bore size, outer size, width, and other details.

Then just send off to 3D printing.

Try Crow River Products.  I used parts from Crow River for detail on a turntable.

Check out Plastruct - metal gears

@Joe Fauty posted:

Check out Plastruct - metal gears

Joe, I am using Plastruct motors (non-functioning plastic variety).  So I did poke around Plastruct's website looking for something that would work but no joy.  I don't need the metal gears as these motors, spools, pulleys, and chains will be static.

Thanks,

George