Technical Old style louvers dimensions

I have a spare hood for my 39 deluxe and want to punch louvers (and also for future projects)
I’m gonna build a die to punch louvers , i like the old style round top louvers.
I searched the hamb but i only found that most are 3 inch wide , I can’t seem to find height, depth and spacing
Can somebody help me with this dimensions ( also the dimensions of the square top louvers)

 

Spacing is going to be what the die allows.

I have these photos of mine that were done in the 80's by a guy in Bremerton Wa with an old air opperated press.






His die had a flaw in it that left it's mark on each louver that a few guys spotted and knew who had done the hood. I think it was done in 1980/81. as I drove it to Texas in 81 and the hood was louvered then.

 

Mine ……

 

More examples

 

The Mittler Bros website has the dimensions of all the dies they sell.

https://www.mittlerbros.com/media/pdffile/Louver-Punch-Out-Dimensions.pdf

 

Anyone use a bead roller

 

Can you elaborate for me please?

 

Wondering if anyone used a bead roller for louvers

 

Would a bead roller punch through, or make dimples?

 

Or are you thinking of modifying one to roll out the louvers?

 

There’s some video online using a bead roller. The Eastwood dies look odd and seem to roll a shallow bead. Seems like they will cut and roll an ugly louvre.
Wondering if anyone has made decent looking louvers with a bead roller.

 

I’ll be darned!

 

That bead roller deal is interesting. Arms get a little tired holding a hood up there.

 

I wonder if the bead roller would put a louver in a curved panel without trying to straighten it out

 

Your louvers are real nice !
I'm gonna use your measurements , thanks !