I recently had a board made and it came back the wrong size. It was my fault because I made some false assumptions. Anyway, in revising the board, I want to make sure things are accurate. I’ve specified sizes and put dimensions on the board. So, in Pcbnew, everything looks perfect.
So I thought I would print the layers out and measure with a ruler but discovered what comes out on paper is drastically off. For example, one side should be exactly 65mm. Which the dimensions say and I’ve put the grid at 1mm increments, zeroed out the side and physically counted. As far as I can tell, everything is perfect.
But instead of printing out at 65mm, it measures 60mm. I’ve looked high and low for any type of scaling but the printer dialog says 1:1. So I’m not sure what I’m doing wrong. I’ve also looked at the OS printer driver screen and scaling is set to 0.
Any ideas what is wrong here?
BTW, I’m using a laser printer with 1200 DPI if that matters.