How to make cracked concrete bases with plastic card sheeting? - Page 2 - Wargaming Forum and Wargamer Forums
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post #11 of 14 (permalink) Old 02-13-16, 02:23 PM
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Bumping an old thread here, but I've been off the site for aaaages.

Paint your material with the dark under-colour you'd like; dark grey, black, whatever...

Then, once it's dry, lay a thin coat of PVA glue over the top. Be quick-ish with it, and don't "paint" it too much or move it around to much, as the glue will begin to mix with the dry paint and it'll lift the paint.
If needed, once dry, repeat this coat of glue but again be quick as to not lift the lower coats of paint and glue.

Leave to dry... now, paint on your top coat, the lighter coat, thin-medium thickness, but again, be quick with the brush and try not to "paint" too much as it will begin to soften the glue and mix and eventually lift the glue...

Leave to dry naturally and as the top coat of paint dries, the water in the paint evaporates and the paint shrinks, pulling the glue causing the PVA to split and crack, revealing the dark undercoat in the cracks.
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post #12 of 14 (permalink) Old 02-13-16, 08:12 PM
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Quite the necromancer arn't you @Model Soldier ? I supose its completely fine with this technique your talking about.

This process you mention is quite interesting but not too sure i understand correctly could you do some photos up for it to explain a little better or even better a full tutorial for it.



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post #13 of 14 (permalink) Old 02-14-16, 04:25 PM
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It'd pretty simple... I have a bad image of a dodgy tree I made ages ago using this technique... picture's not great but have a look at the bark.

1. Dark paint undercoat, leave to dry
2. PVA Glue, leave to dry
3. Light paint top coat, leave to dry and the PVA cracks to reveal the undercoat
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post #14 of 14 (permalink) Old 02-14-16, 07:09 PM
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Hmm think i can see it. Well done, any tips of getting longer cracks i supose longer drying time between paint and pva might cause propergation of longer creases....

Certainly something to think on.



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