I haven't done much work with registration. Any tips on how I could print this piece with utmost precision would be greatly appreciated. I have a vacuum table and I'm pretty consistent when printing, but I'm wondering if I would benefit from trapping some of these layers (or something else) during my prepress for this print.
What about printing everything as opaque white, then printing the 2 extra colours as transparent colours on top of the white?
the best thing is to start off by using some pretty thick paper, like 160#/290gms, lighter than that and the paper tends shrink and buckle. You can also pre-rack it before you print, this way it adjusts to the climate where you are printing...rather than printing the white underbase, you could think of double printing the colors... lot of work but easier than the white...well at least for me