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Maintenance

Thunder Bolt Auto Focus Post Maintenance and Tightening Procedure

How to tighten and maintain the Thunder Bolt auto focus post, including a follow-up ramp test recommendation.

1 min readWatch the videoUpdated Aug 2026
Applies toBoltTopicMaintenance

Preface: This article covers how to tighten your Thunder Bolt Auto focus post and its maintenance.

Quick Start Video

Once complete, you should perform a ramp test:

Thunder Bolt Ramp test and setting Autofocus Height for best engraving results

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