I think I found the top to your drill out there a week ago
That would be a neat matchup..Longshot but each broken artifact found must have had the other piece go somewhere..
How about putting your tip in your vehicle glove box and I'll do the same with the base in my vehicle....If we happen to meet up in the next 3 years we'll have a look.
Howcum your digging the top of the hill? I thought I had that all to myself since everybody knows it's dugout tee hee