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Need Help with Double D Knock Out Punch #4874931
09/21/18 03:41 PM
09/21/18 03:41 PM
Joined: Oct 2011
Posts: 1,686
CA
user52165 Offline OP
user52165  Offline OP

Joined: Oct 2011
Posts: 1,686
CA
OK - that got your attention, but it's not that.

Need a Greenlee double "D" knockout punch. Or equivalent.

3/4" x 2/3" - .75 x .67

It used to be a common size for electronics chassis - used to be............... that is 40+ years ago.

Some upward tolerance is OK.

Doesn't seem to be made now.

Ideas? Thanks guys.

Last edited by wwillson; 09/21/18 09:16 PM. Reason: subject clarification
Re: Need Help with Double D Knock Out Punch [Re: user52165] #4874944
09/21/18 03:51 PM
09/21/18 03:51 PM
Joined: Dec 2005
Posts: 11,754
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 11,754
Upper Midwest
Aren’t there a bunch of them for sale on eBay?


1994 BMW 530i, 242K
1996 Honda Accord, 277K
1999 Toyota Sienna, 418K
2000 Toyota ECHO, 281K
Re: Need Help with Double D Knock Out Punch [Re: user52165] #4874950
09/21/18 03:53 PM
09/21/18 03:53 PM
Joined: Jan 2009
Posts: 7,224
New England
gathermewool Offline
gathermewool  Offline

Joined: Jan 2009
Posts: 7,224
New England
Did you check the etherwebs?


'14 Forester XT FA20DIT (Cobb Stage 1)
Edge 0W-40 + FU filter (64,774 miles)
'15 Legacy FB25 (OEM Stage, uh, neg. 7?)
Magnatec 5W-20 + FU filter (47,300 miles)
Re: Need Help with Double D Knock Out Punch [Re: kschachn] #4875080
09/21/18 06:25 PM
09/21/18 06:25 PM
Joined: Oct 2011
Posts: 1,686
CA
user52165 Offline OP
user52165  Offline OP

Joined: Oct 2011
Posts: 1,686
CA
Originally Posted by kschachn
Aren’t there a bunch of them for sale on eBay?


Not that size.

Re: Need Help with Double D Knock Out Punch [Re: user52165] #4875440
09/21/18 10:53 PM
09/21/18 10:53 PM
Joined: Jul 2013
Posts: 1,884
Ottumwa, Iowa
jhellwig Offline
jhellwig  Offline

Joined: Jul 2013
Posts: 1,884
Ottumwa, Iowa
Unless you can find a Chinese knockoff or a used one on eBay you don’t have much options other than greenlee. There are a few meant for locks out there. Is it a lock application or electrical? If it is electrical you can find a good selection of 22mm or 30mm round devices.

Last edited by jhellwig; 09/21/18 10:53 PM.

Sparks fly from my fingers.

1995 Chevy K2500 Suburban lt 5.7
2014 Toyota Sienna
1983 Chevy K5 350
Re: Need Help with Double D Knock Out Punch [Re: user52165] #4875689
09/22/18 09:05 AM
09/22/18 09:05 AM
Joined: Dec 2006
Posts: 1,926
NY, NY
NYEngineer Offline
NYEngineer  Offline

Joined: Dec 2006
Posts: 1,926
NY, NY
In the past, I needed to make some D shaped holes for bulkhead connectors and I didn't have a D punch so I used a punch that was close and small and then filed one side flat and went at the rest with a round file to make up the diameter. Worked great but took some time. No where near as fast as a punch.

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