Solid oak woktops fitting issue.

Hi Everyone

I've fitted my own solid oak worktops with a butt joint but scribed the cut as walls not straight. Looked a good idea on Youtube!!

Unfortunately had an issue with circular saw and the cut isnt perfect and need advice on a filler that would do the job to fill a 2 mil gap at points

I've looked at Colorfill but don't know if this should be used for solid wood worktops or just for laminate.

I have some sawdust if mixing this with resin is a good idea?

Any help much appreciated...

Solid oak woktops fitting issue.