Does a small bolt cutter exist which tensions with a wrench?
Bolt cutters come in many sizes, you may need to shop around to find some that can cut 10mm, simple mechanical bolt cutters for cutting 10mm steel will have handles about a metre long.



Hydraulic cutters are more compact and are operated by pumping the handle several times. each stroke closes the jaws slightly. hydraulic cutters with jaws intended for cutting steel bar are available, but seem much more expensive than the simple type of bolt cutter.