Forton MG can be patched or pieces joined together by using the same slurry mix, surface applied to the problem area or the area to be joined. The areas to be patched should be roughed up with sand paper and be dust free prior to the patching or joining process. In patching, the mix will go through several viscosity stages, fluid to paste like. When the mix is in the paste-like stage, it can be worked and shaped with damp fingers or tools. When it has hardened, it can be sanded, filed or ground to match the original. Note: when patching or joining metal powder filled pieces, do not sand the patch or joint. Always overbuild the area and work it down with files or a Dremel tool. When joining pieces, the joints must be bandaged with glass fiber and slurry mixture from the back. Then the face of the joint can be patched as above.