Where to find this?

[KBScobravert]

I need a tool like this


To make two D-Shape holes like this

Note the size I need is the 24 pin (larger of the two measurements)


So I can mount this.............. in the firewall


Does anyone have any idea? The tool pictured is WAY too expensive for the two holes I need to make.

Any ideas on make a clean cut likt that in the firewall without a tool like pictured above?

[Strychnine]

Where's your break even point on cleanliness vs pain-in-the-ass?


You could always have a piece of sheetmetal lasercut with that exact pattern then weld that piece into the firewall.

[JamesB]

http://www.grainger.com/Grainger/GREENLEE-Knockout-Punch-4JA59

[KBScobravert]

Where's your break even point on cleanliness vs pain-in-the-ass?


You could always have a piece of sheetmetal lasercut with that exact pattern then weld that piece into the firewall.

If I can get a plate low enough in the tunnel I might not even have to weld it. I can rivet it in place.

The right tool would be too nice though. I have a few weeks to work with before I need it but I can not imagine paying $530 for a new one just to use twice.

[KBScobravert]

http://www.grainger.com/Grainger/GRE...ut-Punch-4JA59

Thanks James. I searched Grainger, Ebay, Yahoo, Amazon and I can not find the size I need. That one you list is about 1/2 the size of my connectors at 1.69"x1.63"

[JamesB]

You could manually make the hole with a good file set. It would take some work but would save you alot of money

[forbes]

i can make that hole no problem. i do it all the time in elec boxes. but for a firewall app i would drill the hole size then just weld the flat side back on and grind it

[KBScobravert]

You could manually make the hole with a good file set. It would take some work but would save you alot of money

Drill to the largest inside diameter, stencil in outline and file or grind to meet the stencil? That is one method I am considering. I have a couple good Dremels and tons of different bits.

I could always drill the largest insdie diameter, stencil in outline and carfully punch a small drill bit just inside of the outline and file the peaks for a final fit.

What is the consensus?

[KBScobravert]

i can make that hole no problem. i do it all the time in elec boxes. but for a firewall app i would drill the hole size then just weld the flat side back on and grind it

I am trying to avoid the welder and body work afterwards.

[gravygraber]

Do a search for metal fab tools. They make all styles and sizes. I use them when I am fabricating custom sheet metal parts. Here is one

http://www.americanpunchco.com/punch_die_options.htmoptions.htm

[DFWtechie]

Do a search for metal fab tools. They make all styles and sizes. I use them when I am fabricating custom sheet metal parts. Here is one

http://www.americanpunchco.com/punch_die_options.htmoptions.htm

Thanks for the link to these guys I have been trying to find and Oval punch to do 1/2 x 1 inch hole.

[KBScobravert]

I called Deutsch and they have a loaner tool that I can use. = Problem solved.