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Step 3Parts list part 2: raw materials
Here I list the parts that are not used as-purchased but must be transformed in a machine shop such as TechShop.
To make the stopper itself:
-- White Delrin Rod, 1-1/4" Diameter, $6.39/foot, McMaster-Carr, part number 8572K233
One-time purchases to make the tooling that holds the stopper during cutting of threads:
-- Alloy 6061 Aluminum Oversize Sheet, .500" Thick, 8" X 8", $30.02, McMaster-Carr, part number 89155K42
-- Alloy 6061 Aluminum Sheet, .190" Thick, 12" X 12", $35.19, McMaster-Carr, art number 89015K31
-- some 8-32 countersink-head machine screws, about 3/4" long
-- some 10-32 socket-head cap screws, about 1" long
To make the stopper itself:
-- White Delrin Rod, 1-1/4" Diameter, $6.39/foot, McMaster-Carr, part number 8572K233
One-time purchases to make the tooling that holds the stopper during cutting of threads:
-- Alloy 6061 Aluminum Oversize Sheet, .500" Thick, 8" X 8", $30.02, McMaster-Carr, part number 89155K42
-- Alloy 6061 Aluminum Sheet, .190" Thick, 12" X 12", $35.19, McMaster-Carr, art number 89015K31
-- some 8-32 countersink-head machine screws, about 3/4" long
-- some 10-32 socket-head cap screws, about 1" long
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