2023 - Volume #47, Issue #3, Page #20[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
Self-Taught Machinist Builds Brass Clock
“By 10th grade, I was a fairly good woodworker and had made gun cabinets, roll-top desks, coffee tables, kitchen and bathroom cabinets, and more. In 11th grade, I started building grandfather clocks and did that as a hobby for about 10 years, and then repaired them for several years after that,” Dosdall says. “Eventually, my clock suppliers went out of business, so I thought it would be fun to build a clock of my own design from scratch. Everyone told me I was crazy to try it, but that just inspired me to prove I could do it.”
Dosdall’s clock project evolved over several months. He used 1/4-in. brass for the side plates and fitted every shaft with a ball or needle bearing of his design. He cut all the gears himself and used his CNC machine to engrave the dial. For the escapement, he copied a design from an 1850’s pocket watch and scaled it up to the size he needed. The pendulum is a huge 4-in. brass valve that’s half the size of a loaf of bread. It’s supported by an eye hook linked to a copper cable that operates the clock mechanism. The valve is filled with lead shot to achieve the exact weight needed for continuous operation.
The stand is equally impressive, made of 1-1/4 in. copper pipe configured into a sturdy box shape that’s 2 ft. wide, 2 ft. deep, and 5 ft. tall.
Dosdall says he thought about mounting the mechanism in a wood case, but then the intricate handiwork on the clock would’ve been hidden.
Dosdall says he built the clock in 4 to 5 mos. and spent about $400 on materials. It was an interesting project, but not one that he’s replicated. He prefers building motorized equipment or refurbishing old farm tractors back to their original condition, especially if those projects involve making specialized replacement parts.
Contact: FARM SHOW Followup, Rich Dosdall, Red Wing, Minn. (email@example.com).
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