Before grouting the pieces is absolutely essential that the pieces are dry, so I will sticky soft.
Needed
two-component polyester filler (metal or glass-based resin, both are fine, just do not have fiber in them)
stucco, metal spatulas of different sizes
latex gloves dust mask and goggles
sandpaper of different grains
procedure
Take a quantity of filler with a spatula, mix the grout with the catalyst (as indicated by the instructions of the grout) and knead for a few seconds with a second spatula. Attention, even in this case, as with the resin curing is done in a short time is therefore appropriate to clean the spatula frequently, rubbing them together. with spatula dirty you run the risk over the catalyst to get the grout into the container and start the process in the container.
The stucco is applied on the thin surface, pressing hard to fill only the gaps that we intend to cover, removing the excess grout whenever possible. Repeat this procedure until the major flaws are overcome. When dry you can begin to sand the piece, starting with a coarse paper to remove the most obvious flaws of the grout, then moved to a mid-term. Once completed, proceed with filling a second before removing the imperfections with putty so they could not see, then proceed again with the paper medium or large depending on how much we want to remove stucco. then repeat this process until you are satisfied with the forms obtained. Finally
with fine sand paper and finish the surface of the parts difficult to reach.
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