- [Materials] How much is the limit of an operating temperature of spring materials?[Materials] Regarding magnetism of stainless steel.
- [Materials] Is there any easy way to differentiate stainless steel for springs and piano wire?[Common springs] Please tell me the way of coiling and how to understand it.
- [Common springs] Please tell me about heat treatment of springs.
- [Compression spring] Please tell me number of coils and how to count it.
- [Compression spring] What is the presence of the ends like with and without grinding?
- [Extension spring] Why do extension springs snap at the hook?
- [Torsion spring] Which size is appropriate for the shaft of the inner diameter of a coil?