Alumidust Metallic Powders For Use With Metal Cold Casting

By Stan Alderson


Real metal cold casting is a method in which metallic powders are combined with a suitable soft plastic, or resin, to create a wide variety of different mold castings that look like real metal and weigh about the same as well. Once the resin is heated to a thick consistency, it can either be brushed, also called slush-cast, onto the surface of the mold. After this is left to set, pure resin or, depending on the particular look and application that is required, a resin mixed with metal powder is applied over this gel coat. The advantages of the metal cold cast process over actual molten metal castings are that it is a much faster process and costs significantly less.

Cold castings can result in attractive surface colors, created by using special metallic powders that are made specifically for such applications. Alumidust Metallic Powders are great for this purpose; they can be combined with casting resins, or brushed directly onto the mold as required.

One important property of Alumidust powder is that it is safe to use and non toxic, which beats other casting methods by far. Available in individual containers in various colors, it is long lasting and only a small amount is ever needed for each project. To make the casting stand out, the powder can be brushed into a silicone rubber mold that is of high gloss.

There are 28 separate metallic powder colors available that include copper, bronze, gold and pewter, as well as other hues and shades to suit any application. These powders are suitable for a myriad of different uses that anyone can create.

One common application of these powders is for dusting soft plastic fishing lures. Making soft plastic lures is much easier than making hard lures, which take a long time and require the use of air brushes and compressors, as well as excellent ventilation.

Soft plastic lures are generally dangerous to make because the paints involved are highly flammable. This can be avoided with Alumidust as a much easier and safer alternative. The steps are simple and first requires that the mold be dusted directly with the powders, rather than applying them onto the lure. The first color that is applied will always be the outermost color on the lure surface.

The plastic is then heated, and when ready simply poured into the mold. It is allowed to cool until it sets. Next, the clear coat plastic is heated up until quite thin. The lure is dipped into this mixture for a few moments by holding it from the tail end until almost fully submerged. The final steps involve lifting it out to allow the excess liquid coat to drip off, then leaving it to cool and set.




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