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Anybody have a DI-Acro 2 bender?

Fluxion

Well-known member
Joined
Apr 9, 2013
Messages
171
Location
Topeka. Kansas
I won a Di-Acro #2 bender at an auction last week. I have wanted one since I was introduced to one back in Junior High metal shop and I finally got one.

It came with a few dies and pieces but its missing the lock down handles and all the pins. The pins are simple enough but can anybody help me out with some measurements of the Lock down handles? I have some 4140 PH that I was planning on using and I have a few questions.

Are they as simple as eccentric offsets to match material thickness?
Is there only one? On the Practical Machinist forum I have seen someone saying there are sizes, if so, what thicknesses are they designed for? I'm thinking 1/8, 3/16 and 1/4". Hercules Hydraulic only offers one lockdown handle.
What diameter stock would be used and how tall are they above the table?
Are the handles pressed in place or can they slide through the hole?
How long are the handles?

Its been a long time since I have used one of these and I don't really remember the lockdown handles.

Below is the only picture I have taken at this point. I have it cleaned up and in the process of painting.

Thanks for any help, Bryan

IMG_1613.JPG
 
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Fluxion

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Joined
Apr 9, 2013
Messages
171
Location
Topeka. Kansas
Yeah all the parts are available but they are very pricy! I have a lathe and mill so I want to make as much as I can for myself.

I'll post more pics later.
 
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Fluxion

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Joined
Apr 9, 2013
Messages
171
Location
Topeka. Kansas
Just for reference below are the prices of a few items I requested just to get an idea of what the parts cost. I will post pics of the locking pin I made and various tooling.

8120510-401 NOSE SPRING need 2 - $24 EA (in stock)
8010461-000 STEEL BALL - $3 EA (in stock)
8210510-204 SPRING - $16 EA (in stock)
8120120-370 LOCKING PIN ASSEMBLY - $90 EA (in stock)
8120016-970 RADIUS PIN - $95 EA (in stock)
8120120-303 HOLDING PIN - $50 EA (in stock)
8120004-970 1/8" radius pin - $110 EA (in stock)
8120004-920 1/8" radius block (required 2 holding pins to use) - $295 (3 weeks from receipt of order)
8120008-970 1/4" radius pin - $100 EA (in stock)
8120016-970 1/2" radius pin - $100 EA (in stock)
8120116-930 1-1/2" radius collar - $215 (3 weeks from receipt of order)
8120200-930 2" radius collar - $250 (3 weeks from receipt of order)
 
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W-Cummins

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Joined
Jan 9, 2006
Messages
1,639
Location
Iowa
I made these for my model 3 out of drill rod I should have heat treated them
 

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Damon L.

Well-known member
Joined
Mar 23, 2008
Messages
169
Location
SE Minnesota
There's only one locking pin. You change the hole that it is in based on your tooling and material thickness.

Tooling height is typically the height of the forming nose for the benders. The locking pins are taller to account for tooling used with the built-up forming nose.

If you want a good reference, check out the Art of Bending.

Full disclosure: I used to work for Di-Acro. I can say that part of the reason that their stuff is so expensive is that the current owner has made a great effort to ensure everything on the machines is made in the US, most of it in the upper midwest. It's all made to the old specs or better based on current technology.

Unfortunately, I cannot provide any dimensional information, but I am happy to share any operation/setup knowledge.
 
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