Press Issue

 

My nipping press has a slight hollow in the middle of the plate, so that it doesn't print properly in that area. It's a very common issue with presses of this type, which aren't strictly speaking designed for printing. It's a persistent irritation.

I've been trying to figure out how to fix the problem. I thought at first a shaped caul might do the trick, but a wooden caul would very soon be dented by the pressure on the plates, which would lead to worse printing issues. Maybe a couple of progressively smaller thin felts might help.

Or, and this is the most likely reliable fix, I might just have to rub in that area with a burnisher before the paper comes off the block.