This 3D model produces a OO/HO scale ballast spreader. This is one of three designs of ballast spreader we have made available. This version is an updated version of the narrow ballast spreader, it evenly disperses the ballast and is used by making a forward/backward motion as you move along the track.
Note: This version of the ballast spreader was updated to produce a faster flow of ballast by increasing the size of the nozzles/slits that disperse the ballast. It works very well for both curved and straight track. The narrow / tall design enables a better dispersal (never too much) ballast on the track.
You can find out more by watching our videos over at oorail.co.uk(https://oorail.co.uk) and you can find other 3D models from our collection at Trackside 3D.
We typically use PLA with 0.1mm layer height and 30% in-fill
Post Printing Instructions
You may want to sand the parts that touch the track, you will probably need a flat-blade screwdriver or knife to clean out the nozzles that disperse the ballast.
This was designed with the Blender. Was one of the first more complex designs that I did. This is version 2, the original version (also available on Thingiverse) dispersed the ballast a little slower than I liked and was offset a bit on one side. I discovered this was actually good for ballasting curves, so I tweaked this design a little by increasing the size of the slits / nozzles where the ballast comes out and offsetting them slightly. This produces a faster dispersal of ballast in a smooth / even pattern, very good for straight track.