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I think what Carl is saying is you pour your base, let it start to set up and then insert your sonotube while the base is still fluid. Thus the braces he comments on to support the tube in the desired position are added. A two part pour will work as long as the base has not set.

Clear skies,

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I had a look at the observatory construction pages at the site in your signature. Can I ask about how you poured your pier, please?

See - what I wish to have is similar to what you have - except that instead of mounting a top metal pier, I want to have an all-concrete pier.

Thanks.

Regards,

skybsd

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