Homebrew PCBs

On Mon, 21 Jun 2010 19:00:45 +0200, you wrote:

>I'm print grid over entire page.
>The error is randomly spread over entire lenght of paper.
>..and near same amount with print on thick or thin paper.
>.. just seems that paper shrink. When I print onto kimoto foil (looks 
>like semitransparent plastic) the random error is stil present but 0.5% 
>shrinkage drop to under 0.1%. but random error (wigling) stay near same 
>in both. I think that transport gear's teeth are uneven and that cause 
>that's problems.
>Of course when printing text nobody will ever see that here is some 
>missalignment. But long row of connector can be out of order just 
>enought to prevent conector to be installed.
>
>
>
>Andrew Villeneuve pravi:
>>
I apologize if this is a dumb question, but do you
have every stage of the print stream set to 100%. In the
past I have goofed and had "fit to page" enabled in either
the board software or Windows printer driver configuration 
and gotten similar results. This can easily be hidden if one dimension
of the board is close to one of the paper dimensions.

May also be dirty/glazed drive rollers in the printer.

Keith Bowers WB4LSJ- Thomasville, NC