Sometimes it is more interesting to leave the tool marks showing.

That was when he thought he'd be busy with tool marks.

I could see now how the fortress had been built without tool marks.

If it were done by a human, then there would be tool marks of some kind.

Foul play has also been suggested, although none of the first four feet showed tool marks.

That way I can see if there are tool marks in the soil.

We found tool marks from the teeth of a saw blade.

We are figuring tool marks either during manufacture or after.

"And did you find individual tool marks on the surface of that cable tie?"

The blast and cutting tool marks were still in the stone.