Within the parameters of this discussion, "investment" is synonymous with "putting on clothes or coverings."After first covering the sacrificial wax object with a covering or ceramic and then burning out the wax to leave a perfect cavity in the refractory material, a metal object can be literally reproduced from the sacrificial wax object. After that, liquid metal is poured into the cavity, and...

Once a week is the minimum time between applications that is recommended for deep conditioners. Deep conditioners should be applied no less frequently than once per week, as this is the minimum interval of time recommended between applications. Because this is the minimum amount of time that is recommended to pass between applications of deep conditioners, the least amount of time that should...