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Re: original design drawings

Posted by Al Frasca on Thursday, 2 December 2010, at 1:18 a.m., in response to Re: original design drawings, posted by Don Harpold on Thursday, 2 December 2010, at 12:31 a.m.

Don, the exploded diagrams are common, but not made by Springfield during production. These exploded views are for part identification, not for production purposes with clearances and dimensions.

I have looked through quite a bit of the material at Springfield and have yet to find a working production diagram of any of the trapdoor parts.

However, Burt Kellerstat had one of the gauges for the three position tumbler which was a cavity that the tumbler fit into if it was made correctly. When I put a tumbler in the cavity, you had a hard time finding the outline of the tumbler because it fit so well.

It may well be that when you are working with tool steel cutting devices which required continual sharpening that the best way to remain tolereance is the go/no-go gauge. Just a thought.


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