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  #1  
Old 11-26-2020, 02:08 AM
John Buchtenkirch John Buchtenkirch is offline
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Default Extra slippery lubricant ???

Little Franky punched a bunch of 3/16Ē holes in 24 stair tread adapters he made for me today. He was having some troubles extracting the punch from the 1/8Ē metal, using the weight & play in the punch handle to sort of bump / hammer the punch out of the metal. We have been putting cutting oil on our punches but itís a choice only because itís handy being itís always on the nearby drill press. Iím just wondering if thereís some tricked out super slippery lubricant we could be using to ease up the extractions of the punch ? Thank you. ~ John Buchtenkirch
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Old 11-26-2020, 06:50 AM
Ron Naida Ron Naida is online now
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I use way lube for necking up/down tubing.
Seems to work well.


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Old 11-26-2020, 10:34 AM
bobadame bobadame is offline
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Try some STP or something similar but here's only so much you can do with lube especially after metal begins to build up on the sides of the punch. There needs to be more clearance between the punch and die.
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Old 11-26-2020, 11:33 AM
Marc Bourget Marc Bourget is offline
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No personal experience, but a Tool and Die guy I knew liked to grind a slight concave above the cutting edges of the punch for just that reason. Delayed the onset of sticking.
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Old 11-26-2020, 12:17 PM
geelhoed geelhoed is offline
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I've broken some small whitney -jenson style punches on extraction.
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Old 11-26-2020, 02:26 PM
norson norson is offline
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A lot of punch machines have a "crows foot" that holds the material down while the punch is pulled though.
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Old 11-26-2020, 08:33 PM
BTromblay BTromblay is offline
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Cleveland punch and die sells a punch lube that helps with the process.

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Old 11-27-2020, 09:16 PM
Don Papenburg Don Papenburg is offline
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I used some of the lube from Cleveland . Make sure that you wipe it off when done using the dies and punches . It rusted my dies like they sat in brake fluid.
I use high-pressure lube grease now . It is messy and needs to be applied often.
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Old 11-28-2020, 08:01 PM
BSG BSG is offline
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Quote:
Originally Posted by norson View Post
A lot of punch machines have a "crows foot" that holds the material down while the punch is pulled though.
They also make a urethane stripper for punches, never used one but for production setups it would be handy!

Just one example......

https://www.polyprod.com/hard-faced-strippers/
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Last edited by BSG; 11-28-2020 at 08:04 PM.
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Old 11-28-2020, 09:26 PM
Mike Rouse Mike Rouse is offline
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Polish the back face of the die. Less friction on the way out.
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