Metal bandsaw - video

[Isambard]

He wound the tension up to about 60Mpa which equates to 8000+psi. The diameter of the sensor piston attached to the tensioner was in the region of 2" so
tension in the region of 25,000 psi is possible, within the bounds of good blades, cheaper blades need a lot less.
Last century, I had a Doall horizontal bandsaw that hydraulically tensioned the blade on startup.