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All Springer/NP/PCP Air Gun Discussion General > Machine Shop Talk & AG Parts Machining

Making Flat Springs

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Roamin Greco:
Hello, this is my first post aside from the welcome message, so please bear with me. 

A fellow airgunner let me borrow one of his vintage airguns. It has one broken part which I would like to replace for him.  It is a small, flat spring, about 3/4" long and about 1/4" wide.  One side has a hole for a screw and the other side has a square notch cut out of the end. The spring has a bend in it near the screw hole. If anyone is familiar with the Diana 50M, it's the spring that locks the rear sight windage adjustment screw.

Well, I asked around at some of the tooling shops around my town and online, but either no one wants to bother with me or it is a bit expensive.

Does anyone have any ideas of who might be able to make a replacement spring?

Privateer:
Get your self some metal banding and make one.
I've got a metal bender in the basement that I have used to make springs like that.
It does radius and sharp bends.

Roamin Greco:

--- Quote from: Privateer on March 10, 2023, 03:17:02 PM ---Get your self some metal banding and make one.
I've got a metal bender in the basement that I have used to make springs like that.
It does radius and sharp bends.

--- End quote ---

Thanks for the suggestion.  How do you cut out a precisely-sized square notch out of the one end?

Privateer:

--- Quote from: Roamin Greco on March 10, 2023, 03:33:06 PM ---
--- Quote from: Privateer on March 10, 2023, 03:17:02 PM ---Get your self some metal banding and make one.
I've got a metal bender in the basement that I have used to make springs like that.
It does radius and sharp bends.

--- End quote ---

Thanks for the suggestion.  How do you cut out a precisely-sized square notch out of the one end?

--- End quote ---

Is it a square hole or a fork type area?

Roadworthy:
You may be able to cut slots on each side of your desired notch with tin snips.  You could then cut this part off with your tin snips or perhaps a sharp chisel.  From there you could file the edge smooth.

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