3 hrs labor+ 1 oz sweat, + 1 headache from eye strain= 1 small screw...
and I bet you'd do it again.....
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| Making a 3 x 52 screw http://www.yesterdaysweapons.com/phpBB3/viewtopic.php?f=58&t=2515 |
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| Author: | riceone [ Mon Dec 10, 2007 10:22 pm ] |
| Post subject: | Making a 3 x 52 screw |
| Author: | M14man [ Mon Dec 10, 2007 10:46 pm ] |
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3 hrs labor+ 1 oz sweat, + 1 headache from eye strain= 1 small screw... and I bet you'd do it again.....
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| Author: | oldernavy [ Tue Dec 11, 2007 12:51 am ] |
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My Starrett gage has thirty threads, but no 52 threads per inch. It just has 50 and 56 and it is 33 years old. The closest metric is .5 mm pitch. That translates into 50.8 thread per inch. Cumulative lead error?? I had to do a similar thing to get 8mm x.8. Luckily 5/16x32 is very very close using a split die. so much for standardization. |
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| Author: | riceone [ Tue Dec 11, 2007 2:50 pm ] |
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My thread gauge only goes to 38 tpi but I have a Brownell tap set that has a 3 x 52 tap and that fit the hole perfect. I then went through the Japanese Armorer set and found the split die and the threads matched perfectly. Here is a picture of the die and I'm not sure what the 2.6 means. 1/4" drill for comparison with screw. roy 
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| Author: | A square 10 [ Tue Dec 11, 2007 2:59 pm ] |
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this is very interesting , my father had a lot of these tools and equipment , but along the way they disapeared  , he may have given them away , and some may have been loaned , but i suspect my brother has a lot of tools he knows nothing about 
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| Author: | oldernavy [ Tue Dec 11, 2007 4:28 pm ] |
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Roy That's a neat shot of the die. Very interesting design. As to the 2.6 its in Japanese.  Ok now I have to eat my hat. .
Could the 2.6 be 2.6 mm the diameter +/ - screw it was designed to make? That is about 0.2mm away from a # three's major diameter. |
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| Author: | A square 10 [ Tue Dec 11, 2007 4:41 pm ] |
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| Author: | riceone [ Tue Dec 11, 2007 8:16 pm ] |
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| Author: | oldernavy [ Tue Dec 11, 2007 9:48 pm ] |
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| Author: | A square 10 [ Tue Dec 11, 2007 10:17 pm ] |
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now that set off a bell in my head .........i know , that ringing sound is normal at my age ........i have a copy of MACHINERY right here on the shelf , inside cover is marked with my grandfathers name - 1942 date of publication as well so he bought/recieved it new below that is a criptic note : wt. steel - 0.28333lbs/cu-in [ then] brass - 0.31 lbs/cu in aprox for avg mixt i have no idea what he was involved with at that date , but viking pump was producing pumps for all branches of the armed service as well as the merchant marines , and they were producing artillery shells too , theres a price sheet for viking jacketed pumps dated april 2 , 1949 superceeding aug 20 , 1937 ---now thats a while between price changes ehh? its actualy a scrap paper - has a sketch on the back defining some mathematical formula ive not seen since college and a chart of keys & keyways and two bookmarks with formulas to change 56 drill to .055 wire and one referancing 5hp / 12hp at 134rpm to 5650 in-lbs and 10-12000 in-lbs and a calling card for : thomas m. mckay , central tools company , 6270 west north avenue , chicago 39 tel 637-8580 he represented : american broach & machine a. g. davis gage & eng co. davis hydra-grip div erickson tool co formcraft tool co subland cutting tools inc he must have been someone my grandfather trusted and liked , or the card would not have been saved |
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| Author: | oldernavy [ Tue Dec 11, 2007 10:30 pm ] |
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| Author: | Gungrubber [ Wed Dec 12, 2007 10:46 am ] |
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Cool when all else fails make it yourself. I love my metalworking tools too!! GG |
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| Author: | Mybusa [ Wed Dec 12, 2007 11:34 am ] |
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All I know is I wish I lived next door to Riceone!!!! Maybe he needs to adopt me 
Do you need an adopted 46 yr old son?? Heir sounds better 
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| Author: | HerrMesser [ Wed Dec 12, 2007 12:25 pm ] |
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When I got into being a maintainence machinist I bought a thread guage at sears and it has a range of 4- 84 threads and it has 52 in it. Miss having the availibilty of machines to make things. Rad |
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| Author: | oldernavy [ Wed Dec 12, 2007 12:53 pm ] |
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Herr M, You can always buy youself a minilathe. They aren't bad, but the pivoting part of the cross slide could be of better design as that is where most of the excess movement comes in. |
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| Author: | riceone [ Fri Feb 15, 2008 12:04 am ] |
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Mybusa, I'm sort of late finding to answer. 46 year old son would fit in good with my 44 year old son. While we are talking about son's let me tell you about mine. I had wanted to go to the Louisville, Ky gun show not this weekend but the next but had backed out. Had too much to do getting ready for the new crop. But we have gotten some of that done. Mark called tonight offering to take me up there thinking it was this weekend. Knew I did not want to go alone - about 8 or 9 hour drive. He may develop the same crazyness over old military that I have. Hope so. riceone. |
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| Author: | Gatsby [ Fri Feb 15, 2008 12:34 pm ] |
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I love it  Amazing what a feller can do with the right tools
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| Author: | HerrMesser [ Sat Feb 16, 2008 12:13 am ] |
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