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So half way through trying to build a supa stompa I remember what wet stuff does to card, does anyone know what kind of sealant is good for card board and paint...on...able, or if I even need it at all.

Thanks

I haven't really worked with cardboard but would an exterior house paint work to keep out moisture?

Again, not certain just thinking out loud.

Superglue. I've never tried to make a cup or anything out of tagboard, but once dry, it ceases to be like cardboard and starts to be more like plastic. Super glue is really your best friend with tagboard and makes so many things possible.

Superglue works, as Tagboard Wizard said, but it would take a ton to cover the whole model. Spray paints applied in multiple, light (you can do more than a dusting, but definitely don't let it pool) coats should be good enough. Once paint is on the card, it will act as a moisture barrier by itself, so you just need to be able to apply it without getting the thing soggy in the process. I've used cheap, generic flat black spray from Walmart for this in the past, and to good effect.

Thanks for the responses Im going to ask down at b&q about exterior house paint, i do like the idea of using super glue but as oadie said it would take a tone to cover the model and im planning on making 2 supa stompas and a great gargant, I was thinking about using spray mount but ill have to do some tests before etc.

if all else fails il just spray it lightly and hope for the best

thanks for your help

wood glue then spray paint

Both the Toaster of Lost Souls (talos) and Kettle of Eternal Suffering (cronos) are made from card board (specifically cereal boxes) on a frame. I glued together with a mix of pva / plastic / super glue then simply sprayed them with Chaos Black before painting straight on (both matte and shiny side of packet). Have had no issues with paint making the card soggy etc.

Maybe if I spilt a drink on them or something it might make an issue, but they're fairly cleanly covered in paint now..

Also - the problem with wall emulsion here is it'll invaribly obscure line and detail.

I know it's a moot point at this stage in the venture but you should consider going to the local comic book store and getting some acid-free backers. Cereal boxes are cheap not just in price, but eventually they will deteriorate whether you get them wet or not due to the acid in the cardboard.

After you've painted the thing, make sure to give it a good coat of acrylic sealer. If you use matt, give it an extra coat. Same stuff you spray on your minis, but let's not forget you're essentially coating it in atomized plastic sealant. Just make sure the coats are light and you let it fully dry between coats to prevent warping.

I built a warhound titan using cereal box card. It was a pain to work w/ on such a big model w/ supporting the weight at first but once I got it all glued together then I hit it w/ several coats of black spray primer & then quite a few coats of craft paint cuz the cardboard kept soaking the pigment out of it. Eventually 3 coats of clearcoat & honestly the cardboard is hard as a rock. Almost literally. When you thump it it sounds like hard plastic.