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Question about hammers.

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Kermit

08-06-2000 20:10:42




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This is probably a stupid question, but forgive me. What is the purpose of the "pein" on a ball pein hammer? Thanks.




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nicole

08-06-2001 10:28:37




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 Re: Question about hammers. in reply to Kermit, 08-06-2000 20:10:42  
I have an old hatchet that has James Smart Plant Brockville Ontario on one side and Endurance Handitool on the other side can anyone tell us about this or direct us to someone who might know thanks



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bbott

08-08-2000 13:11:12




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 Re: Question about hammers. in reply to Kermit, 08-06-2000 20:10:42  
One of the more things I ever saw was when I watched an old time machinist straighten out a bent 5-15/16" hammer hog shaft using a 2-1/2 pound ball-peen hammer.

He chucked the shaft in the heaviest lathe we had and used hydraulic jacks put load opposite the bend.. then using the hammer he carefully and systematically peened surface tension into the shaft to neutralize the bend.

He'd take the load off, and roll the shaft under an indicator to see where he was at. Then back at it again...

It took a whole day, but when he was done it was true as new.. and saved the company thousands of dollars.

It was one of the most amazing thing's I'd ever seen. A guy standing there with a (relatively) small hammer rapping on a huge shaft and straightening it out.

That fellow and the other 'old-school' machinists I worked with are gone now... I wonder if the things they did are becoming a lost art...

best regards

bbott

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Lou

08-09-2000 14:14:00




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 Re: Re: Question about hammers. in reply to bbott, 08-08-2000 13:11:12  
Hi BBott,

You said:

"I wonder if the things they did are becoming a lost art..."

I assure you that in this country, the US, it is. In Germany they still have apprentices spend over a year just fileing metal, so they fully understand the charactoristics of different metals... Here that would be a waste of money, or so we are told....

Lou



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Fred OH

08-08-2000 07:45:28




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 Re: Question about hammers. in reply to Kermit, 08-06-2000 20:10:42  
It is used when the peen on a straight peen or a cross peen won't work. Correctly spelled "peen". It evolved from the days when they worked metal and shaped it by hand. Along with a host of other hammers such as rounders and flatters that the blacksmith used. It seemed to live on after the others including the blacksmith went by the wayside. A tool is kept in existence by how handy it is. The ball peen passed this test.

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hartshorn

08-07-2000 18:34:45




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 Re: Question about hammers. in reply to Kermit, 08-06-2000 20:10:42  
It's for shaping, usually used in a tapping fashion...to persuade a piece of metal into a sort of shape that will fit more gracefully than wracking it around in a vice with a sledge. To be really useful you need to use it with a series of backing forms...usually wood and usually negative and tap tap tap the metal into shape.

Kim Hartshorn



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Mudcat49

08-07-2000 06:03:04




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 Re: Question about hammers. in reply to Kermit, 08-06-2000 20:10:42  
I dunno, but when I see a cowboy working on a tractor I know how to tell he's a cowboy, no, not by the cowboy hat he is wearing, but because he is using a claw hammer to do mechanic work! (and also look for the use of bob wire to hold things together)



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Pappy

08-06-2000 20:22:43




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 Re: Question about hammers. in reply to Kermit, 08-06-2000 20:10:42  
We always used it to set rivets in mower sickles etc.



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Burrhead

08-07-2000 05:50:23




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 Re: Re: Question about hammers. in reply to Pappy, 08-06-2000 20:22:43  
Yeah an besides setting rivots I like to use one when I'm tapping out home made gaskets from cardboard cereal boxes.



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john Ne.

08-07-2000 22:13:45




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 Re: Re: Re: Question about hammers. in reply to Burrhead, 08-07-2000 05:50:23  
Peen, on the ball peen hammer, originally for peening down the end of rivets, [setting] a rivet head, now adays use it where it will work, like all the above,



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