Keep Preview from autoresizing print output Whenever I want to print a PDF file from Preview, the print dialog defaults to shrink the page to fit the bounds of the page. I have to manually select scale: and enter 100 into the text field. Is there a hidden default or other way, to tell Preview to always default to 100% print size? 

Using a saved print setting as suggested below does not work in this case. I'm using Preview 5.0.2 (504) and Mac OS X 10.6.4, perhaps a bug?

When I save the setting I want to have, open another PDF file, select print, and select my saved settings, the scale: setting jumps to some arbitrary value around 100% (90%-105%) and the radio box stays at "scale to Fit:".
quit the Preview App, enter the following into your Terminal application and then start Preview again. Problem solved!

defaults write com.apple.Preview PVImagePrintingScaleMode 0


to revert this setting, you can use the following command:

defaults delete com.apple.Preview PVImagePrintingScaleMode