Printing 1.2 mm cardboard on Heidelberg Windmill

Hi everyone, I just wanted to ask if you know which is the maximum thickness that a Heidelberg Windmill can pick up to print.
I have to make some tags on black cardboard of 1.2mm and wanted to know how you see that. Thanks in advance.


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Hello… I run 40 points thickness chipboard, no problem. Just get you some heavy cardboard suckers. Be very careful, use your side fingers only and have a lot of blower to separate about 3 or 4 sheets. Keep your pile as low as possible. Fan them good.
Its not really that heavy.

Looks like a bit thicker than #220 Lettra. If you’ve printed that stock before you should be able to set up about the same way.

But one thing to note- some black stock can ‘scuff’ in an odd way. I helped a friend out of a bind a little while back when he was running some .060” museum board; problem is somewhere along the way as it whirled through the windmill, it kept getting marked up.

The solution was to drop the stock and the plate off to me and have me run it handed on the C&P; no problems.

Just check your sheets rigorously as the job is progressing.

Yes, watch your scuffing. I’ve run some heavy black stock before. I put a lot of tape down on top of metal surfaces hoping to stop it. It made it a little better, but I never did lose the scuffing completely. In the end, I just decided I could live with it. There are some things that are really only noticeable to us!

Theo, are you mixing printers’ points and thousandths of an inch? 1.2 mm is 47 thousandths.

Thank you everyone for your replies! So far the heaviest paper I’ve passed is the Rives Tradition 400 grams and it went perfectly, with suckers and patience I managed just fine.
I’ve to do some dry printing on that black cardboard, do you think it can scuff anyway? Thanks again to all for the help!

1.2mm is equivalent to 3.414330709 printer’s points and also the same as .047”

When measuring paperboard, 1 point is one thousandth of an inch. If it is .047”, it is 47 point board.

A paperboard point is different than a printer’s point, which as I recall is .0138”. So if a sheet of paperboard was the thickness of one printer’s point, it would be 13.8 point board.

Mike Conway,

Right. Theo’s use of both printers points and thousandths in two subsequent sentences might have made it read as though he’s run paper 11 times the thickness the OP asked for.