/diy/ - Do It Yourself

>>339437
If you're ever in town and are at least a halfway decent, tolerable person, you're more than welcome to come hang out here any time.

>>339342
Very cool - Very interesting method.
How'd yours turn out?

>>338622
We use ratios of 3/4/6 (cement/gravel/sand) by weight.

>>339274
>kind of an art right?
Most definitely. But it's also chemistry - You CAN fuck it up.
Too much water and it will be weak... Not enough aggregates and the cement will have nothing to bond to... etc. (This is where all the fancy acrylics and additives I mentioned earlier come into play - Helping us avoid problems and making our lives a little easier.)
There is some wiggle room however. i.e. We use less gravel and more sand than your typical construction concrete because it makes it easier to work with (more 'flowy') when filling the mold.
Concrete doesn't 'dry' it cures.
In fact, while curing you need to make sure it stays wet - We use spray bottles and sheets of plastic. This ensures that all the cement molecules become and stay properly hydrated. Also, keeping it warm helps with the reactions taking place - We use space heaters under the tables and on occasion, heater blankets.
themoreyouknow!.jpg

>>275657
>mfw i go to that school