Source for coaling chutes

Doesn't anyone have any idea where I may find a source for a set of coaling chutes?

This might be a good item to have 3D printed.  I suppose you could also create some from brass as well.

Should be easy to make from styrene or bass wood

Charlie and Pete,

Thank you for your suggestions as it looks like it will have to be scratch built as I do not have access to a 3D printer.

I was hoping I could find a source for these as a molded one would have more detail than anything I'd build.

It seems there isn't any demand for these, thus the lack of a suppler.

The Coal tipple had some very detailed coal conveyors.

The coaling tower also had chutes.

Grandt Line makes this one in O scale:

Bob

Mike and Bob,

Thanks for the tip and lead on where to get the parts.

Allegheny:

It is not too difficult to build these your self. This way you can control width and length. Below is what I had originally found on the internet

I based my design on this trying to simplify it

The pulley assembly is shown below. The 'pulley' wheels are Plastruct SX-3 glued top to top.

The beads came from Hobby Lobby. The thread is normal sewing thread. All the plastic came from Plastruct (Evergreen can be used also). The 'pulley' wheels are Plastruct SX-3 glued top to top.