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Hypertufa and Concrete: Q & A on Garden Sphere making

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Forum: Hypertufa and ConcreteReplies: 3, Views: 43
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scooterbug
Tellico Plains, TN
(Zone 7b)

September 30, 2005
2:45 PM

Post #1790029

You just look around for round plastic items that could be a half sphere then glue them together by buttering with mortar.

You can cut a basket ball in half and make a mother mold to keep them round while pouring in da mix.

Many have used the glass globes that fit onto light fixtures but these are a one - use mold as you must break the globe to get the sphere out.
rcn48
Lexington, VA
(Zone 6a)

October 2, 2005
3:34 PM

Post #1793222

Thanks Shirley. Now if I used a basketball size, about how long would it take to cure? Also I'm thinking of adding some small stones for decoration, do I add them after them they start to cure but are still soft?
scooterbug
Tellico Plains, TN
(Zone 7b)

October 2, 2005
3:56 PM

Post #1793247

Assuming you are using tufa, you can carefully de-mold when you no longer can easily put a dent in the tufa with your fingernail.

Depending on the weather 18 to 24 hours should do .I would first check around 12 hours so you know how it is setting up.

You can use Gorilla Glue or a clear exterior silicone to attach stones & half marbles after the sphere is dry.

Take pictures while doing your project so you can start your own thread ,

'cause you know how we all ... Wannseeeeeeeee !
rcn48
Lexington, VA
(Zone 6a)

October 2, 2005
4:03 PM

Post #1793258

Boy that was fast! Thanks, it won't be for a couple more weeks before I attempt this as we are still exhibiting at shows until next weekend - but then I'll be ready to take a break for awhile and thought this might be a fun project - one for myself and two for my best gardening buddies. When I get started, I'll be sure to take pics.

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