Hill Valley Subdivision - HOW-TO: Making N scale streets and sidewalks

A tutorial on how I made sidewalks on the model railroad. including using some 3D-printed tools to make the job easier!
*DOWNLOAD THE STL FILES TO PRINT YOUR OWN SET OF TOOLS HERE, FOR FREE!
www.thingivers...
*UPDATE
you can order the tools here, if you don't have a 3D printer:
www.shapeways....