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slateworks
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In the pet department of the local garden centre this morning I saw a bag of Vermiculite, seemingly used to help snakes' eggs to hatch. It's cheap and extremely light weight and I wondered if it could be used for ballast or ground cover. It's ground up volcanic rock and a pale sandy brown colour and at £4.50 ($7) for a huge 10 litre bag weighing only a few ounces, would cover a lot of ground. If anyone has tried this material, I'd welcome your comments and suggestions. I'm modelling in On30 by the way.
Doug

Herb Kephart
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I think that I read somewhere in the past that it was used, mixed with plaster, for scenery. I don't know whether the idea was to lighten the scenery weight, or to "stretch" the amount of plaster needed, but obviously the idea didn't inspire others.

Vermiculite used to be used as "pour in" insulation in buildings, but other materials have replaced it.

Herb

W C Greene
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Oh yes...in "the Gazette", Harry Brunk showed how he used vermiculite in plaster to model the rock strewn area under his Georgetown Loop. Looks pretty good. I think the stuff was used to simulate rocks in the ground...an idea from before some smart a$$ began using real dirt & rocks to "simulate" real dirt & rocks. Go figger!

Woodie

slateworks
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Herb, Woodie - thanks for the comments. A little more research on my part then.
Doug


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