For the Patmag base user: we recommend the 152SB plate for most letterpress printers. Some printers find they prefer printing with a harder plate, the 145HSB. This harder plate gives less distortion than the 152SB on type smaller than 8 points or on thin lines. However, the 152SB holds slightly better detail. The 145HSB plate is a little less flexible than the 152SB and may crack if flexed too much on the magnetic base.
Posted in: Photopolymer