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Thread: How would you make this?
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2nd Nov 2012, 05:06 PM #1Philomath in training
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How would you make this?
One of the guys at work brought this in today (to taunt me I'm sure...)
IMG_0783 (Medium).JPG
We think it is a watch maker's drill - the drill bit is sub 1mm. The shaft looks to be a 8 or 10 start with a helix angle of 60 degrees. The thing that has me puzzled though is how the nut would be made. Any ideas?
Michael
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2nd Nov 2012, 05:09 PM #2Most Valued Member
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maybe a broach ?
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2nd Nov 2012, 10:03 PM #3Senior Member
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They are called Archimedes drills and are for any small work like watchmaking (good guess ), model making and jewelry making. They can be bought quite inexpensively.
Pete
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2nd Nov 2012, 10:06 PM #4
I would say cast.....just to throw another idea out there.....but broaching as John said could work very well.
1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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3rd Nov 2012, 01:30 AM #5
Uniform twist not needing any great amount of precision could mean it was just twisted, possibly heated up. Gun barrels are rifled, this is not much different.
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3rd Nov 2012, 03:03 AM #6
Lost Wax?
Maybe:
Clone the quasi-allthread in plaster of Paris for a waste core. Setting expansion of the p-o-P provides clearance. Mold the body thereon in wax. Proceed as in lost wax process.
Cheers,
JoeOf course truth is stranger than fiction.
Fiction has to make sense. - Mark Twain