I’ve heard people say you can mix sawdust from your workpiece with wood glue to make an invisible patch, but I’ve tried it twice (once in oak, once as pictured on ash) and both times it came out significantly darker and the surrounding wood. The glue is Tite Bond 3.
Does a different glue work better? How wet should the sawdust paste be? This is on the back so it doesn’t matter a lot, but I’d like to have a good process for filling little mistakes.
Looks like you found the answer but on an unrelated note and since this is the internet… your lengths of wood on the bottom seem to be cut perpendicular to the grain which will be significantly weaker depending on what you want to do with it compared to the lengths on top.
It seems like it was one board where op cut lengthwiese and sidewise groves in with a router
Ah well what do you know