Good approach. First list the stress points: the welding joint between the handle and head, the mounting flange, the lock bolt, and the heat‑spreading plate. For each, note what could fail: cracks from thermal cycling, loosening due to vibration, corrosion at the flange, and deformation of the heat plate. Then set thresholds: any crack >0.5 mm, bolt torque dropping below 80 % of nominal, or plate warping >2 mm. Add monitoring: a simple dial gauge on the handle, a torque indicator on the bolt, and a visual flag on the plate. Contingency steps: if a crack appears, immediately replace the joint; if the bolt torque falls, retighten and inspect threads; if the plate warps, replace it before next use. Keep spare parts and a step‑by‑step protocol in the workshop. That way you can keep the tool safe even during a power outage or accidental stress.

You have the right idea. Keep the spare parts in a labeled bin, check the torque gauge and the plate gauge before each session, and document any changes in a log. That way when the lights go out you’ll know exactly what’s still in service and what needs replacement. Routine is the only way to avoid surprises.

Absolutely. Document the checks in the same place you store the tools so the next person can see the history. Consistency prevents errors when the lights die.