Sanding for Integration Once the filler is fully cured, begin the sanding process. Large gaps in wood present a unique challenge that separates basic DIY projects from professional-level craftsmanship.
Managing Flexible Wood Filler Movement in Gaps
Overfill the gap by about 1/8 inch to account for shrinkage and wood movement. You should start with a coarse grit, such as 80 or 120, to level the "hill" of filler down to the surface of the wood.
Drying and Curing This stage requires patience, especially when working with epoxy. Unlike paste fillers, epoxy fills space completely and does not shrink as it cures.
Managing Flexible Wood Filler Movement in Gaps
The edge of the filled area should be flush and smooth, with no sharp ridges. Cutting a sliver of hardwood to fit the void provides maximum strength.
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