Small drill bits (up to 3.2mm diameter) are almost impossible to sharpen. Most of us just just buy new ones when our bits get dull. They are not expensive even in packs of 10. But, sometimes we have parts which require sharp bits. (see recent post on installing model cannon sights). Even new bits are…
Twist Drill Bit Sharpening Jig- From Dull to Sharp
Sharpening drill bits
Abrasive Machining, Four/Six Facet Drill Sharpening Fixture for Surface Grinder - Recommendations?
Drill Bit Sharpening Jig
How to Sharpen Used and Dull Drill Bits (By Hand!!) : 11 Steps (with Pictures) - Instructables
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Homemade Drill Bit Sharpening Jig
EVERYONE Can Sharpen Drill Bits With THIS Jig
瓶を切れる機械「電気ボトルカッター」のレビュー!空き瓶を真っ直ぐ+効率的に切りたい人に必見
Harold Hall Drill Bit Sharpening Jig
Drill Bit Sharpening Jig How to Easily Sharpen Drill Bits - 2 Ways
Shop Made Drill Sharpening Jigs
瓶を切れる機械「電気ボトルカッター」のレビュー!空き瓶を真っ直ぐ+効率的に切りたい人に必見