[TheForge] Hydraulic Press Dies

[Woolley]

Thanks alot guys, good info as usual.
 
Bill Woolley


larbooks@impulse.net wrote:

>Don't know if anyone mentioned it but you can use the shortcut of 
>80 x dia. of hole in inches x thickness of metal in inches will equal 
>the tonnage needed to punch the hole in mild steel.  So like Dan 
>said (I think his Whitney 20 is rated at 20 tons)  Dan's example 
>would be  80 x .5 x .5 = 20tons for half inch hole in half inch plate.
>
>With the variables involved you should probably figure on using a 
>tonnage of at least 50 percent more.
>
>Norm Larson
>
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