This is what nails do to the edge! I've planed back the crumbly chipped edge back to clean wood.
closer, you can see what this spruce is like. Wavy, wide-grained, with a few brittle knotty bits at the flanks like this
or this bit of repeated trauma which has pulverised the spruce under the varnish. I have to plane back as far as i dare then do the rest with glue and new spruce edging.
This new spruce is much nicer to deal with and will properly strengthen the original edges. It will glue better, too.
