[Krpepe]

Every time I see someone showing one of these, I wonder why a manufacturer has not produced one. (I know there was a small manufacturer who did offer one but it vanished quickly)

The IKEA lint-rollers are a global product these days so one based on those would be quite popular.
If I recall correctly, the offered unit could automatically run on batteries or track-power to cover situations where the track is really dusty/dirty.

Leo

Leo,

I actually have a design to use the ikea lint rollers and would gladly consider selling this. The main problem that I see is cost. The big costs in US dollars are tires 15.00, motor 20.00, control board for digital vehicles 30 -50, bearings 10.00 hardened shaft 10.00 . The prices I am listing include shipping and tax. If it is for a digital track that puts you at 95.00 before you even add some margin on it. This also doesn't account for filament, electricity, or assembly time. I would also be worried that anyone buying something wouldn't want to spend that kind of money on something 3D printed.  I personally would love to sell these but in my opinion I don't think I would be able to make any money at it. Unfortunately it is a niche market, and would most likely be priced out of most peoples budget in an already small market. Please don't take this as me being negative towards you, because I am not. I am just stating what I see as road blocks. I'm open to reasonable suggestions.

Kevin