=====Calibrate your laser printer=====

====Why?====

Your laser printer is not perfect. If you print a big 8" x 10" rectangle and measure it on the paper, it will not exactly be 8x10. Most of the time it doesn't matter. But if you are printing a drilling guide for mounting holes, or if you are printing a pcb layout that have long footprint (like a slider), then your part won't fit.

====Then what?====

Well, we won't actually modify the printer. All we are going to do is measure the "error" and compensate in your design software before printing. If your printer has a tendency to print objects on the X axis longer, we will shorten them in the software, so they have the good size once printed.

====How do I do?====

- Print this document, 100%, US letter size http://s000.tinyupload.com/index.php?file_id=02292925287500759531

- For each side of the rectangle, measure the side and fill up the first number, then do the math and write it down

- In your software, select what you want to print, and change the percentage (transform) accordingly to X and Y.