Published On May 13, 2020
Trepan drilling with Paul Debolt. Boring large holes to diameter "takes too long and wastes material." Trepanning saves time and money! Not only does it require less horsepower than typical drills, a pristine slug is left behind, which can be sold or used to make other parts.
Paul walks us through how he uses his trepan tool, which is made of a Sandvik trepanning tool shank and a custom adapter for the tailstock. This approx. 3.75" hole is for the center of the Debolt Tramming Ring, which trues Bridgeport type milling machine heads WITHOUT indicator skip!
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Links for this video
Debolt Machining Tramming Ring | https://bit.ly/2SKQrXR
Debolt Machine Shop Tour | http://bit.ly/2trcvu0
Sandvik Trepanning Tool | https://bit.ly/2L9IiIA
Sandvik Technical Guides & Products | https://bit.ly/2YTLQH1
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