A small chip came off the surface of my piece when I was removing it from the rough stock. (I foolishly removed the piece, which I had just finished CNC'ing, from its rough stock by pressing it, rather than carefully cutting the tabs away - never again!)
Here's a photo of the piece before the repair (and before the finish was applied) - the chip is on the right:
I decided to try to repair it with a bit of wood glue, which worked OK. However, the finish on the chip is noticeably different from the finish of the rest of the piece, even though both are finished with the same material (mineral oil).
Here's a close-up of the chip as it's being glued - I sanded down the excess that was protruding:
And here's how it all ended up looking when sanded and finished - note the chip at the very bottom is a distinctly different color:
What should I have done to get the chip to match the piece? I was thinking of rubbing the chip's top surface briefly with mineral oil before the gluing, but I was worried that might weaken the bond.