Calculate mandrel size for spring winding

[olympic]

A couple of weeks ago I used "Machinery's Handbook" to help me make a water key spring for my trumpet. Worked perfectly on the first try.

 

[Oldiron]

The spreadsheet is no longer available at the link provided. Does anyone have a good link or a copy to share? Bob

 

[besty771]

I think this is the one - I downloaded it at the beginning of last year.

Hope it helps...

 

[kquiggle]

Look here for more information and other versions of the spreadsheet :

Academy of Lagado - Tools - Spring Making

 

[Oldiron]

The spreadsheet worked. Thanks. Bob