Make a mixture to match your finish

Putting corner of box slats

Making your own filler

To fix gaps, cracks, and small holes, make your own filler by mixing sanding dust with hide glue, linseed oil, or a bit of your final finish. Here, we used polyurethane varnish and powdery dust that we reclaimed from the bag of our belt sander.

Make your filler into a thick paste, and force it into the gap with a putty knife. Sand it to aid in drying and to level the surface. Use the same grit that you used for your final sanding step.

Putting corner of box slats
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