I'm pretty sure Mr. Bruce is going to use a blast chamber for his truss rod tests.
Of course. Safety First. That's why the Secret Underground Lab is underground. To reduce the collateral damage if a test goes wrong. Maybe I'll do the testing over in Unit 2....
It might be interesting to rig up strings and a pickup on the test neck, and record the sound a bass makes when its truss rod snaps. We already know the sound that the bass owner makes....Does the bass cry out in pain, or in joyous relief?