Miniature Violin and Case

Miniature Violin and Case

Craftsman: Marvin Johnson

Catalog #: 2011.13.2

Donor: Ed Wright, Wright Family Trust

This miniature violin and bow in a fitted case are hardly larger than a US quarter.

Pepe Gyroscopic Governor

Pepe Gyroscopic Governor

Craftsman: Birk Petersen

Catalog #: 2016.15.51

Donor: Mark Petersen

This is a demonstration model of a gyroscopic governor called “Pepe.” The mechanism is hand cranked.

Piston from 1979 Blue Max AA/Funny Car

Piston from 1979 Blue Max AA/Funny Car

Craftsman: Venolia

Catalog #: 2014.36.1

Contributor: Craig Libuse

This interesting piston came from the Blue Max AA/Funny Car record run. The time of the record run was 6.02 seconds.

Polished Copper Oil Can

Polished Copper Oil Can

Craftsman: Phillip Duclos

Catalog #: 2013.50.11

Donor: George and Dorlene Root

The beautiful simplicity and fine finish on this small oil can is a great illustration of Phil Duclos’ metalworking skill.

Puddle Weld Sculptures

Puddle Weld Sculptures

Craftsman: Peter Renzetti 

Catalog #: 2018.37.1 ; 2018.37.2 ; 2018.37.3

Donor: Peter Renzetti 

To create his sculptures, Peter Renzetti used a jeweler’s oxy-acetylene torch to build melted puddles of welding rod drop on top of drop.

Rimfire Spark Plug Prototypes

Rimfire Spark Plug Prototypes

Craftsman: Paul Knapp

Knapp Collection #: 296

Catalog #: 2011.27.44

Contributor: Paul Knapp

These Rimfire spark plug prototypes were built by Paul Knapp in 1993. The first prototype is the surface-gap plug responsible for the “Rimfire” name and logo.

Robotic Arm and Hand

Robotic Arm and Hand

Craftsman: Carl Hammons

Catalog #: 2013.16.1

Donor: Joe Martin

This unique project is a stepper motor-powered experimental robot gripping arm designed by Carl Hammons.

Schindele Hit N’ Miss Powered Saw 

Schindele Hit N’ Miss Powered Saw 

Craftsman: Ron Schindele

Knapp Collection #: 728

Catalog #: 2022.8.12

Contributor: Paul Knapp

This unique hit n’ miss powered saw was built from Coles Power Model castings. It has a bore of 1.25, and stroke of 1.875, with enough power to be put to use.

Solar Turbines Gemini APU Turbine Rotor

Solar Turbines Gemini APU Turbine Rotor

Craftsman: Solar Turbines

Catalog #: 2017.1.1

Donor: 2017.1.1

This original 1981 Gemini turbine rotor is the heart of a turbine auxiliary power unit. The blades are very thin and made from Titanium.

Tatone “Chicken Stick”

Tatone “Chicken Stick”

Craftsman: Tatone Products

Catalog #: 2015.22.6

Donor: Tony Cina

The Tatone “Chicken Stick” was produced in San Francisco to save hobbyists’ fingers from airplane engine kickback.

Tramp Art Wooden Box

Tramp Art Wooden Box

Craftsman: John Chester Chaffee

Catalog #: 2016.1.2

Donor: Jackie Hoefert

This “tramp art box” was carved from old cigar boxes by John Chester Chaffee (1881–1975)  as a gift for his wife.

Varo Amp-Champ 12 VDC Field Generator

Varo Amp-Champ 12 VDC Field Generator

Craftsman: Varo Inc.

Donor: Joe Martin

The Varo Amp-Champ was powered by an Ohlsson & Rice 2-cycle, single-cylinder model airplane engine (Type 122) that was rated at 3/4 HP at 6,300 RPM.

Wankel Engine Demonstration Model 

Wankel Engine Demonstration Model 

Craftsman: Ingersoll Rand 

Catalog #: 2012.9.1 

Donor: Louis Chenot 

This small model demonstrates how a 2-rotor Wankel rotary engine functions. 

Showing 20 of 87 exhibits.

Presented by The Joe Martin Foundation for Exceptional Craftsmanship