She has been building a model steam engine, a task fit to put anyone’s machining skills to the test. And a steam engine needs a boiler, which is where the silver soldering comes in.

She has been building a model steam engine, a task fit to put anyone’s machining skills to the test. And a steam engine needs a boiler, which is where the silver soldering comes in.

Object Details inventor Babcock, George H. Wilcox, Jr., Stephen Description This model was filed with the application to the U.S. Patent Office for Patent Number 65,042 issued to George H. Babcock and ...