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layums 11th October 2012 08:46 PM

Concrete speaker stands
Hi need some help in specifying concrete mix for a smooth white finish of concrete cast in smooth MDF form work. Thanks.

Andersonix 13th October 2012 06:56 PM

Who needs a spec? A ready-mix concrete plant? More background, please....

tvrgeek 15th October 2012 11:20 PM

Don't expect the cast surface to meet your finish requirements unless you are making it yourself and have high power vibration and vacuum chambers.

No 4 16th October 2012 12:15 AM

You could try the mix for counter tops. You could use melamine and mold release wax. Your surface will be smoother and you can finish it. A little research on concrete counter tops might steer you in the right direction for your project.

layums 18th October 2012 05:43 PM

Great. Just what I was after. Additives.

tvrgeek 20th October 2012 09:22 AM

Don't counters require a lot of trowel work to get the cream to the top?

Of course, there is always Bondo.

Roger Hardcastle 29th March 2014 04:58 PM

I do not know the precise mix but adding some PVA is a good idea. Either PVA designed for cement mixes or just ordinary woodworkers PVA glue.

I am thinking about making some concrete blocks for my Celestion SL6 speakers. I am planning on making 3 inch thick slabs and standing the slabs one on top of the other - this will make moving the stands easier. I have thought out the mould - I am going to use MDF and planed pine. I am going to use model aircraft wing covering which is waterproof to seal the wood surfaces. A common brand is Solarfilm.

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