Largest paper able to be used on a 10x15 windmill

Hi All,
We just got a 10x15 windmill. What is the largest paper size you can feed on that? Would it be possible to do 11 x 17? Thanks!

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The largest size you can run without making modifications to the press is about 10.5 x 14 +/-. The largest size I’ve run successfully was 11x16, but modifications are needed (removing parts, cutting packing away etc). I’m not confident that you can get an 11x17 though.
Bill

There is a difference between the maximum image area you can print (may be what Bill was refering to) and the maximum paper size. The maximum paper size is limited by the horizontal arms on either side of the press, within which a sheet can fit without being bent over. The maximum size sheet vertically is limited by your reach and skill in holding the loose end of the sheet steady.

If using paper wider or taller than the platen, you may want to do a good job of cleaning anything which may touch the paper before, during, or after impression.

Experiment a bit and see how large you can go, and report back. Inquiring minds would like to know.

I know a fellow who runs a lot of 15” long stock (ballots). The key is to remove the stop pin on the delivery back guide, this allows the delivery to be an extra inch further back. Some creative work could allow you to run bigger sheets yet, but by them it might be simpler to get a bigger press. The biggest limiting factor of the Heidelberg 10 x 15 is the limited (10 x 13) image area—it’s not meant for running large sheets, that’s what a Kluge or a Miehle Vertical is for.

Oops, I misread the first post and thought somehow 1021 was talking about a C&P. I guess it is a bit more difficult to feed oversize sheets on the Heidelberg presses.

Just an update, printed the posters on the windmill at 10x15 and they came out great (the printed area was 9x12), but we were ok with the wide margins

I recently foiled a logo onto 500 A3s on my 10x15 platen. It required hand-feeding, which was a bit of a pain, but was cheaper than us sending it out to a finisher. Just had to clean the left side of the chase, which it was touching, then was good to go.