Foamboard

[Old Goat]

Very kind Fastolfrus and ditto, ever find your self down on the Kent Coast give us a nudge for tea and cake.  Well at least biscuits.

Thanks once again gentlemen I shall see how I get on.

Best as always, OG.

[Remington]

Are you using water to peel off the sheet? If not... it helps. Mind you, don't drown it... just dampen it gently.

[Old Goat]

No I haven't, bloody good idea...

[anevilgiraffe]

I could never get the foamboard to peel either... and I used water... another convert to the magic blue foam

[oldskoolrebel]

Recently found this one on ebay with blue foam in assorted thicknesses from 1.5mm to 50mm:

http://www.ebay.co.uk/itm/220940948099?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Now added to my watchlist! Thank you!

Cheers
Andy

[Christian]

If you're ever near Scarborough during term time feel free to contact us.

... remember me to one who lives there. 

I think you will have a lot more success with insulation foam, from your initial post. I never use foamboard, but I have seen some great stuff done with it! Insulation foam just seems to be the cheaper and easier option to get decent results.

[Billchuck]

You might try scoring with a biro. I've found that the scoring sometimes "snags" but it just makes the brickwork look old and irregular.

You can also try using a small burnishing tool.  The small ball-tipped ones work well.

[zizi666]

Look for embossing tools. They come with different size ball-tips.
I was lucky enough to find a set in one of those discount bookshops, in their hobby section, for a couple of euros.
The set contains 2 tools with #size tips on each end, so actualy 4# tips.
Can't measure 'em up as I'm at work, but I'd guess 1,2,3 & 4mm tips.