Homebrew PCBs

On Mon, 12 Dec 2005 23:37:40 +0100, soffee83 <soffee83@...> wrote:

> Pardon the dumb question, but what is a pivoting press?
>
>
> It sounds like a hinge type of carrier instead of vertical movement.
>
> (?)
>
>
> Sounds scary. I have enough trouble with double sided stuff not lining
>
> up top to bottom.


The tangential movement is so identcal to a linear one for the 2mm or so  
travel it does not matter. You need to put the hinges back like 40mm and  
you need to set things up so that the tangent is perpendicular to the  
board, and everything will work great.

About your wood sliding thingy.
I think wood would have too much friction (if it is tight). Look at metal  
presses to see how you could improve on it. If you add a second sliding  
block above the first at a distance, and connect the sides of the two via  
plates, the play would be greatly reduced. Otherwise the forces exerted by  
moving the drill will bind the slider, even if it is relatively thick.
I reckon if you used plastic plates like PE or PP cutting boards or  
something, or maybe only line the wood with brass sheet, it could well  
work, but it still is definitely more work than a pivoting press.

I still do not think it is a viable idea, but hey, never listen to the nay  
sayers ;-)

ST