Thats nice.
I like to use spice and CA glue. Spice is essentially super fine clean wood dust and comes in various colours - and you may have on hand in the kitchen. Also helps the CA set pretty quickly. Also you get the smell of whatever spice you used as you sand down.
I nabbed this tip from you about a year ago or so. I was using instant coffee crushed down with a spoon for awhile until I realized it wasn't really 'fine' enough. On a Natty I'm working on right now I switched to Ground Cloves. I used ground art pastels a couple of times but I like how the spices have subtle color and actually blend to look like wood grain after finishing. On this project I had just one real hairline crack on the handle but I opened it up a little with a jewelers file so I could get the epoxy blend in there. The other spots were knots and a little bit of wane on the inside edge of the fork.
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