Letterpress Design Tips: It's A Trap

Trapping is a term used to describe the compensation for misregistration between colors that should have hairline registration  (when two colors are accurately aligned to be touching). When you are feeding paper by hand into an antique press it is very ifficult to achieve hairline registration.  For this reason, we ask that you trap any colors by at least .375pt that should have hairline registration. This gives us a little bit of wiggle room, and ensures that there will be no gaps between two colors that should be touching.

Artwork that looks like this...

Artwork that looks like this...

...should be trapped like this...

...should be trapped like this...

...and will look like this when printed. 

...and will look like this when printed.