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.