|Repair, sanding and finishing
are all easy on a casting made of Forton MG. It is white, but, it can be
pigmented with water-based pigments to achieve a variety of effects, including
cold cast metal and marble. By adding metal powders to the Forton MG, metal
finishes can be produced that can even be patinated. With the addition of
marble dust a cold cast marble can be created.
|Forton MG is very sensitive
to mix-ratio and exact measurements must be maintained for best results.
This requires the use of a gram
scale to weigh the ingredients. When measuring,
or otherwise handling metal powders, dry resin, powdered hardener, cabosil
or any other powders associated with the Forton MG mix, a high-quality (NIOSH-approved)
dust mask must be worn. Fiberglass
is usually added to the mix for strength.
|Both chopped fiberglass and
woven fiberglass may be used. Care must be taken that the
chopped fiberglass does no penetrate the face coat. Woven fiberglass
though more expensive eliminates this hazard. The problem with most woven
fiberglass is that it often does not lay flat creating air pockets that
can weaken your casting.