Anyone ever try to drill a pritchel hole in an old anvil which doesn't have one?
I'm looking for options for doing that. I've got an old 1820's Mouse Hole Forge anvil without a pritchel hole which I'm currently working on refacing using hardfacing MIG wire. I've stopped before putting on the final layers of the hardest (HRC 55? range) layers because I've decided I really don't want to live without a pritchel hole if I don't have to and it will be easier to hardface around a whole than to try and drill though the hardfacing later.
The current top layer of the anvil is BB-G hardfacing wire which is around HRC 45 in range. My standard drill bits aren't cutting it. But I've not even got down to the original steel plate in the anvil which I think might be harder.
Annealing the steel and then trying to heat treat it later doesn't really seem like much of an option here - and I have no clue what that would do to the hard facing layers I've already put down on the anvil. So if I'm going to do this, I think drilling or grinding though it is the only workable option.
I've talked to a couple of machine shops. The first didn't even want to try it, and the second would be happy to try, but could not make any grantees and would charge $85 an hour plus the cost of any tooling he broke while trying.
I just ordered a 1/2" carbide bit from enco to experiment with ($45 with shipping). That's really about the limit of how much money I want to waste on this. Really just wondering if anyone here had every tried such a thing and had any advice about it.