Homebrew PCBs

On 22/04/2010 00:54, w6mikk wrote:
> My old trusty HP LaserJet 5P printer  slightly shrinks the printed pcb image on paper when I printed a pcb image from a PDF file. On screen pbc measures 5.2 cm (2 inch)  on paper is 5.0. On screen measures 8.1 cm (3inch) and  7.7 cm on paper.
>
> Does KICAD  software contain a method to compensate Laser printers so the printed image is almost identical to the image size on screen?
> I have not installed KICAD but have studied a tutorial.
>
>
> The printed image size differing from screen size concerns me since I will be using Toner Transfer.  For 2 by 3 inch pcbs is this shrinkage going to cause SIGNIFICANT errors when drilling holes for IC sockets? For slightly larger pcbs, is error going to be more severe?
>
> Do other LASER PRINTER users have this same problem?
> How are you compensating? Does software like Paintshop Pro X10
> provide small size adjustments when printing  jpg files?

The Easy-PC software I used to use had an adjustment for that. I'm not 
sure if the current version has it, though.

Leon
-- 
Leon Heller
G1HSM