Two p12 questions

[Burningmetalmaniac]

I am in the middle of building a p12 that has been rusting away waiting for me, and in the process, I broke the .0625 drill bit in the frame flush on one side, and almost through on the other, despite my best effort to keep the bit clean. Any tips on how to get it out? I haven't drilled the extractor mounting holes yet either, I'm guessing that hardened drill rod is going to be an issue unless I go with a cobalt drill for the holes from the top.
Other question, are there any of those custom built sear springs still floating around? Or do I have to modify one or build my own?

[tr6guns]

Drill from the other side with a carbide spade drill, then drive the broken bit out. The majority of the ones that I do don't even have the Ejector Pined, the slide holds it in. Its easer and cheaper to make your own, take a stock 1911 spring with putting it in a vise and heating the end you are going to bend. The vise will keep the other end from loosing its temper, which is the only end that you have to worry about. Smith and Alexander has the right size Main Spring Housing the last time I checked.

[Burningmetalmaniac]

Thanks tr, I do have a few factory springs, and I read the section in the p12 mega thread about doing it that way, guess that's the route I will go lol. I have a mainspring housing, just the cheap sarco plastic one, but I still have yet to cut the slots in the channel for it to slide into, waiting for a small keyseat cutter from msc.
another question, fitting the thumb safety, I was tossing parts in checking my pin hole fit, and realized the frame is not machined on the inside for it to be able to move up and down, I couldn't find any info on how anyone fixed that, I could go in there with a ball end mill I suppose, but I was also debating just hitting it with the carbide bit on the Dremel lol. How did you do yours?

[tr6guns]

1/4"x1/16" Keyseat cutter, (In a MILL) the dimensions are on the print. Same as a 1911. Detail H, L, M, and MM.

http://www.klstottlemyer.com/prints-drawings-etc.html

Use the USMC drawings in the 1911 Folder..