Fixing paper/ card to ply.

[toplink@()1989))((]

I'm after a little advice regarding a large industrial building in 7mm for my layout.

I have built the shell of the building in 3 and 4mm ply and I have clad it in corrugated card. The first few pieces I glued with PVA, and they seem ok, however a larger piece I glued to the ply separated layers of card, I suspect it was the pva causing it to delaminate. I replaced that part and fixed it with Pritt Stick. The next layers were fixed in place with Spray Mount, now the instructions on the can say there is 20 to 30 seconds of adjustment which is fine but it appears it doesn't want to permanently stick the card in place. Has anyone used spray mount? is it a permanent fix? Has any one got any ideas? I don't want to strip it all off again, but I also don't want it to peel off. If I do have to start again, doe's anyone have any tips for fixing the card permanently?

 

Thanks in advance.

 

Cheer's, Pete. 

[Chubber]

Are you using 'corrugated cardboard' per se, or corrugated paper such as the coloured sheets used in scrap-booking , card making etc?

 

My only experience is with 4mm modelling, but on the one occasion I used the coloured sheets used in scrap-booking [essentially wriggly paper]  to cover a model for a chum [a 1930's Loan Act shed] I got nowhere until I stuck two layers of 'wriggly paper' together with Copydex. Once dry, the Copydex is impervious to water.Then I could cut them to shape and stick the sides together using PVA. Uuntil then they were unmanageable. The Copydex made them a lot more rigid. At each corner I used 6mm square softwood, drawing a black 4mm line down each face of each side to imitate rolled steel.

 

If you are simply gluing the flat side of 'corrugated cardboard' to the shell, then perhaps a non-water based glue such as UhU [so as not to dissolve the interstitial adhesive would be a better bet to avoid wetting and thus weakening the glue layers?

 

Doug

Edited September 7, 2017 by Chubber

[katwigan]

I think with most of the spray mount type adhesives spraying on one surface only makes for a ' temporary' bond they all advise spraying on both surfaces for a permanent bond. But then you also only get one shot at positioning the material.

Have you thought of using 3mm or 5mm foam board that has a self adhesive layer on one side ( much like self adhesive labels ) it's onlt shortfall is the requirement to reinforce it to prevent warpage, but it does make quite strong and light shells. 

Kev

[toplink@()1989))((]

I started work on the building some weeks ago and decided to go the spraymount route, I wish now I hadn't its been a pain it the %^&, I won't bore you with the details but I stuck (pun intended) with it and am now at the point where it is almost finished, but truth be told I will never ever use the corrugated card/paper again.

 

Here's a photo of the building as it is now.

 

 

 

 

 

 

 

Cheer's, Pete.

[Nearholmer]

I've been round a few loops on this sort of thing, and now prefer to use an 'impact' adhesive, rather than PVA to fix rigid (ish) sheets to ply. Currently I have a tube of evostik impact adhesive on the go, and it is the old-fashioned 'smelly solvent' type.

 

One does need to go very carefully, because it is a case of one chance to get it right/wrong!

 

Impact adhesive becomes totally nightmarish with paper coverings, and PVA can be really troublesome, causing wrinkles, so spraymount might be better for that.

 

Kevin

 

PS: or, try the stuff that DIY Shops sell as 'border adhesive', which is used to stick up fancy borders, dado decoration, very heavily embossed wallpaper etc onto walls. It seems to be PVA, with something in it to make it thicker (or maybe simply less water in it) and it is spread onto the back of the paper decorative things with a sort of spatula ....... it seems to be formulated to give a long 'adjustment period' and not to cause wrinkling.

Edited September 21, 2017 by Nearholmer

[Poor Old Bruce]

The first time I stuck brickpaper to wood, I put the glue (dilute PVA) on the wood and then applied the paper - Disaster - the paper expanded and wrinkled like Nora Batty's stockings! Solution - put the glue on the paper and apply that to the wood. The paper still expands when the glue is applied but sets flat as the glue dries.

[CourthsVeil]

Hi Jim:

here link – now without the word "expensive: "      eBay

HTH & regards

   Armin