Screening ballast to size | O Gauge Railroading On Line Forum

Traveling ManOGR Forum Member

I visited my local quarry today and brought home about 300 lbs of 1/4” or less stone dust. I purchased a set of sieves for mining and also got the correct grading screens from McMaster Carr with are sized at 12x12 opening and a 20x20 opening. I read on the forums here how to do it and which size to use as ballast, but I cannot find it again. Can someone please help so that I can get started?

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6/15/181:06 PM

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lehighlineOGR Forum Member DIGITAL SUBSCRIBER

How to do it: Use the coarsest (biggest holes) screen first. Then run the stuff that falls through that screen through the next smaller size hole. Continue until you run out of screens. I would pick a size that looks right. Generally smaller is better (but not too small!).

Chris

LVHR

Big_Boy_4005OGR Forum Member

# 8 sieve is what I use. It looks like this when it's done.

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modeltrainspartsOGR Forum Member

I did mine years ago with stone dust and made my own sieves. I used what looked right.

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