birkpetersen's channel

Showing the forming of dime size pie tins. And for what use? For Mice, of course!

Generic model of an oil field pump built to represent pictures of real ones found on the Internet.

This mechanical sculpture was created with a heavy cast steel base and cast iron flywheel. It incorporates the double-offset rotary piston that I p...

I made this hand-crank figure for a brilliant man who has inspired me and countless other amateur organ builders all over the world. " Thank you Jo...

A scale model size replica of a 45 hp double displacer, single power cylinder, hot air engine, built in 1843 to power the machinery in the Dundee F...

Scale model of Englishman Matthew Murray's geared crank engine of 1802

Scale model of a hand pumped Railroad Section Car.

A whimsical kinetic facsimile of century old stamp mill ore crushing machines.

Demonstration model of the valve operating mechanism for a paddle wheel engine

Model Geared Engine with a chain driven rotary valve.

Automaton of a shoemaker by Birk