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Metro Detroit Metalworking Club |
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PRESIDENT’S MESSAGE Last meeting, I brought up Emil’s conundrum of how hollow doorknobs are made. The Internet told me, after some searching, the process starts with deep drawing and redrawing to get a tall cylinder. Then a different process is used. The Net told me its a forming process called rubber bulging. It refers to a rubber (or urethane) punch forced into the drawn cylinder that sits in a metal die. The punch deforms and forces the cylinder into the cavity. I got the answer I was looking for, but as always on the Net, search results can be amusing. The keywords “rubber bulging” turned up 391,000 entries. It seems there are lots of things out there that are bulging. MINUTES There were 17 members present, John O. and Emil C. presiding. There were no guests. There was talk of having a representative from Locktite give a presentation at a future meeting and pass out free samples. I whined about how often my band saw blades broke and that I bought 100 feet of blade stock and was welding up the size I needed. I got much advice (thank you) and can now report I am still using just one of the blades I made. Success! We talked about the metal working class since about 11 us just came from it. I asked that observers of the class not get in the way of the students or take any of the instructor’s time. Dick is the most precious resource in the class.
Joe
Pietsch built his
own special tricycle. Its for scouting out shows and expos. It has several
unique features: its stable at slow speeds, its easy to get on and off,
and high enough to see what's on display. As good as this bike is, I still
see room for improvement. What about an umbrella for portable shade and
saddle bags for all the catalogs and brochures? Below are typical students machining, learning, teaching, consulting and concentrating. We have beginners and experts alike making a variety of satisfying metal objects
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