Custom fonts with Printmaker
Make sure your fonts are TTF.
If you're loading them by remote URL, make sure the isRemoteEnabled is set to true.
If you're changing weights, make sure to use the named weights in your CSS (normal, bold) rather than numeric weights.


(These are limitations of the underlying DOMPDF library, which is used in Printmaker 1.x. The next release of Printmaker, for Craft 3, uses a much nicer rendering engine, which will eliminate these limitations.)