World's Smallest Double-Action Steam Engine MOC Instructions

Get your air compressor or vacuum ready to run the world's smallest double-action steam engine MOC!

This record-breaking, working model features many details, such as:

• Moving 1x1 piston, for a record-breaking size and added realism and functionality.

• Moving 1x1 valve, making this engine actually run!

• Detailed exterior, with a moving speed governor, flywheel, crankshaft, bolt heads, and grease cups!

With 129 parts, this engine will complete any engine lover's collection!

Files are in a .ZIP folder. Once extracted, there are three files: PDF instructions, a Bricklink .XML file, and a video detailing how to upload the .XML file to a Bricklink Wanted List.

No physical parts are included in this product. It is only digital files.

Estimated price for parts + shipping: ~ $20 USD