Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Fabrication

SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 11-20-2018, 07:37 PM
milomilo's Avatar
milomilo milomilo is offline
Auction Addict
 
Join Date: May 2010
Location: Wheatland, Wyoming
Posts: 15,334
Default Center Punches

I made a couple center punches about 30 years ago using engine valves. They served me well since that time. Last week I had to drill a hole and looked for a center punch for 15 minutes. Finally gave up and used an auction center punch I had in the drawer and I expect it was an import as the point flatten out on the first hit.

Stopped in at my mechanics shop in town and asked if he had any old engine valves he could part with. Left with 9 of them. Several large Cat valves and a few smaller ones. Cut off the heads in the cutoff saw and used a cordless drill to spin them on the grinder to a 30 degree point.

Turned out well. Tested them and found they made a good punch mark and still sticky sharp. Dropped of a large and a small to Bubba next door.

Stocked the rest and maybe I can go another 30 years before I need to make some more.
Attached Thumbnails
Click image for larger version

Name:	SAM_2314.jpg
Views:	242
Size:	215.3 KB
ID:	148226   Click image for larger version

Name:	SAM_2315.jpg
Views:	262
Size:	210.3 KB
ID:	148227  
__________________
Chris

Liberty has never come from Government. Liberty has always come from the subjects of it. The history of liberty is a history of limitations of governmental power, not the increase of it.
Woodrow Wilson
Reply With Quote
  #2  
Old 11-20-2018, 08:02 PM
randydupree's Avatar
randydupree randydupree is offline
Why, Hell Yes!
 
Join Date: Aug 2005
Location: Bainbridge Ga
Posts: 6,064
Default

Chris is always busy!
Reply With Quote
  #3  
Old 11-20-2018, 09:13 PM
GWIZ's Avatar
GWIZ GWIZ is offline
SFT Historian
 
Join Date: Feb 2006
Location: USA
Posts: 6,882
Default

How well will they do as pin punches ?
__________________
*
*
The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment. ~Warren G. Bennis
Reply With Quote
  #4  
Old 11-20-2018, 10:23 PM
milomilo's Avatar
milomilo milomilo is offline
Auction Addict
 
Join Date: May 2010
Location: Wheatland, Wyoming
Posts: 15,334
Default

Quote:
Originally Posted by GWIZ View Post
How well will they do as pin punches ?
Probably good, but I have no way to turn/grind them down to different diameters. Not sure what grade or alloy they are, but surely hard as hell. Suppose I could make a few for whatever size I get them in.
__________________
Chris

Liberty has never come from Government. Liberty has always come from the subjects of it. The history of liberty is a history of limitations of governmental power, not the increase of it.
Woodrow Wilson
Reply With Quote
  #5  
Old 11-20-2018, 10:48 PM
toprecycler's Avatar
toprecycler toprecycler is offline
Elite Member
 
Join Date: Jan 2009
Location: Petoskey, Michigan
Posts: 4,046
Default

Quote:
Originally Posted by milomilo View Post
Probably good, but I have no way to turn/grind them down to different diameters. Not sure what grade or alloy they are, but surely hard as hell. Suppose I could make a few for whatever size I get them in.


You have a lathe. Fab up a holder to hold your hand grinder in your tool holder.


Sent from my iPhone using ShopFloorTalk mobile app
__________________
Brian

You don't know what you don't know.

"It's what you learn after you know it all that counts." John Wooden
Reply With Quote
  #6  
Old 11-20-2018, 11:31 PM
milomilo's Avatar
milomilo milomilo is offline
Auction Addict
 
Join Date: May 2010
Location: Wheatland, Wyoming
Posts: 15,334
Default

Quote:
Originally Posted by toprecycler View Post
You have a lathe. Fab up a holder to hold your hand grinder in your tool holder.


Sent from my iPhone using ShopFloorTalk mobile app
I should have been more clear. Yes, that can be done, but I do not wish to have grinding grit all over the lathe. I know it can be covered somewhat, but I would prefer not to do grinding on my lathe. I have many pin punches already. so I do not really need any more anyway.
__________________
Chris

Liberty has never come from Government. Liberty has always come from the subjects of it. The history of liberty is a history of limitations of governmental power, not the increase of it.
Woodrow Wilson
Reply With Quote
  #7  
Old 11-21-2018, 07:45 AM
alchemist's Avatar
alchemist alchemist is offline
Elite Member
 
Join Date: Jul 2009
Location: New Orleans
Posts: 1,437
Default

Quote:
Originally Posted by milomilo View Post
I should have been more clear. Yes, that can be done, but I do not wish to have grinding grit all over the lathe. I know it can be covered somewhat, but I would prefer not to do grinding on my lathe. I have many pin punches already. so I do not really need any more anyway.
I'm with you on that. I don't do any grinding or wood on my lathe.
Reply With Quote
  #8  
Old 11-21-2018, 08:11 AM
Ironman's Avatar
Ironman Ironman is offline
Iron Modification Investigator
 
Join Date: Feb 2008
Location: Warburg, Alberta, Canada
Posts: 13,915
Default

I had to chuckle, Chris. When I was a kid, still at home, (Wasn't 16 yet) I made a center punch from a valve. They work well.
__________________
Gerry
You got freedom of speech, if you don't say too much.
Aaron Neville.

The virtue is always a cover for the sin. That's the key to understanding the modern left. Whatever they're accusing you of doing, they are doing themselves but more enthusiastically. And that's definitely the story of Justin Trudeau. Tucker Carlson
Reply With Quote
  #9  
Old 11-21-2018, 08:15 AM
digr's Avatar
digr digr is offline
The Real Deal
 
Join Date: Apr 2005
Location: Duluth MN
Posts: 8,193
Default

Quote:
Originally Posted by Ironman View Post
I had to chuckle, Chris. When I was a kid, still at home, (Wasn't 16 yet) I made a center punch from a valve. They work well.
I am sure that they would, I think I should leave the valve
head on, the way I swing at things now
__________________
Drawing by Smartdraw
Reply With Quote
  #10  
Old 11-21-2018, 08:48 AM
digger doug's Avatar
digger doug digger doug is offline
Not to be used as a Flotation Device
 
Join Date: Jan 2008
Location: NW Pa
Posts: 11,831
Default

Quote:
Originally Posted by digr View Post
I am sure that they would, I think I should leave the valve
head on, the way I swing at things now
I had to laugh at this.

Years ago, I had a friend that owned a weld shop, just him & his son.

When he would drill something on the big 'ole drillpress, he would
get out a prick punch made from IIRC 3/4" hex rod.

Wail away with a 5lb several times to make the marks big.....really big.

I said "Why did you stop ? A few more whacks, and you wouldn't
need the drill press".....
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 04:05 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.