Remove Wrinkles out of an oversize Print

[Flock of Art]

Hi Everyone!

We have a large print that has come in (34" x 46") and it has waving / rippling around the edge, as well as ripping in areas through the print.
I came flat, rather than rolled up, so we don't have any major issues, its just very noticeable once floated above the mountboard.
I was wondering if you guys had any tips for flattening it out? We don't have a press big enough, or a roller.
We have had it in the box it came in, with extra weights across it to try and use pressure to remove the wrinkles, but haven't got very far.
Any help would be hugely useful!

Thank you so much!

[JFeig]

It can be done without major expensive equipment. You do need some space and a bit of time.

It is done on a flat table. After an application of the back side of the print with a micro-sprayer with purified water (do not over wet the paper) the print is placed on a sheet/board of blotter paper, face up. A second sheet of blotter paper/board is placed over the print. This multi-layer is then covered by flat weight of some kind. It can be 6 mm glass or equivalent with several thinner sheets or even some building drywall material. Additional weights can also be added such as books or other heavy items. You are essentially making a frameless drying press. This "sandwich" of layers is then let to rest for several days, until the contents normalize with the existing relative humidity of your workshop. Yes, the blotter boards and glass can be reused.