Filling material for bolt fixing


Old 05-17-14, 01:12 PM
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Filling material for bolt fixing


I have a hollow cast iron ornament. Cavity is around 20 cms deep and 9 cms across.

I need to secure it from the bottom with bolts/nuts

I would appreciate suggestions as to what material to use to fill cavity which will set quickly around threaded rod which will protrude from base allowing me to bolt onto a platform.

Thanks for any help

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Old 05-17-14, 02:43 PM
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Welcome to the forums.

Why do you need fill the cavity ? Do you need to make the bolt holes watertight ?

I think I'd use a carriage bolt as the hold down means. If you drill the proper size hole.... the square part of the bolt will contact the ornament and not spin as you tighten the nut underneath.

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Old 05-17-14, 02:51 PM
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For that size cavity use molten lead.
Old 05-17-14, 03:10 PM
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What about concrete slurry? Or pottery slurry? Set the bolt before the slurry sets up.

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