Metal spring clamps?

[pe2dave]

Bought some recently, 2"?
Barely open them - far too highly sprung for normal use?

Any recommendations please -
Soft tips, reasonable 'strength' and 2 - 4 inches opening?
Not plastic.

 

[David C]

I think these are designed for use clamping small mitered work like stringing lines.

Restorers used to make larger spring clamps from chair springs.

David Charlesworth