Pinbock thickness

[Newton Hunt]

If you use the same length pin ok.  If you use 1/4" shorter pins you
will loose 18.18% contact area between pin and block.  Hmmmm.

		Newton

David Renaud wrote:
> 
> The original pins were only 2 1/4 inches with
> only 1"3/8ths of pin actually in the block.
> 
> Open faced block inserts through top of plate(router job and fussy
> fitting)
> , so no extra pin height required to clear the plate.
> So if I use the same size pin I am safe with a 1"1/2 inch block.
> The only concern so far assume problems with cheating on
> pins depth but this is not the case. I can go with original size pins.
> 
> I thought a potential problem would be reducing contact with the
> flange but the distance from the top of the block to the bottom
> of the flange is 1 1/2 inches.
> 
> I'm not sure why they went with such a thick block except that
> they had insert cut outs into the plate, and wanted extra, so ordered
> thick stuff. But they did not take advantage of the depth with longer
> pins.
> 
>                                              Dave
> 
> Newton Hunt wrote:
> 
> > A thinner block will yield less pin / block contact area.  Pi*D*H
> > where D=diameter and H=height.  Consider the total amount of contact
> > area of the pin in the regular block and the amount in the thinner
> > block.  Bear in mind you will have to use 1/2" shorter pins.  Now
> > figure the % difference.
> >
> > Other than that, as long as you have the plate height set right, there
> > will be little difference.
> >
> >                 Newton