Tracks for “The Heavy Lifter” Toys and Joys model. Made to take the most tedious part of the plans, and let my printer do it. Allowed me to build more and not get burned out on my woodworking hobby. I have printed in BBL Matte Latte and Matte Charcoal with good results.

https://www.toysandjoys.com/product/120-the-heavy-lifter/ is where to get the plans.

Comment if you have a simple repetitive part of a model, that you're dreading to do. If its not too complicated ill make a file and upload it. I'm all for helping people enjoy their hobbies.