Trepanning vs Solid Drilling: Which Approach Fits Your Job
I choose trepanning when the core material is valuable enough to save. Trepanning is a deep hole drilling method that cuts an annular groove and leaves a solid core. I’ve recovered over $12,000 worth of core material in a single year by trepanning Inconel parts. The core can be recovered and used for another purpose. Solid drilling removes all the material as chips. Here’s when each method makes sense. Trepanning Trepanning uses a cutting head with a hollow center. The head cuts an annular groove around a central core. The core is recovered when the cut is complete. ...