Masonry Drill Bit

Sharpen the insert so the point angle is as noted below.

Point Angle Clearance Angle Notes
130º
 0º
 Grind the bit so that it has a 2-facet grind (the primary facet). No secondary facet is needed, and would probably weaken the bit's insert.

Good videos showing the use of the Tormek DBS-22 Drill Bit Sharpening Attachment:

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About this site
Remember : The goal of sharpening is to produce sharp tools, and these tools can injure you if mishandled. Safety measures should be followed to protect yourself and those in your shop. Be sure to read and follow all instructions from the manufacturer, and and utilize proper safety equipment. Never consume alcohol or anything that could impair your judgement before sharpening tools, or using sharp tools. Comments can be sent via eMail to me at SharpeningHandbook@Gmail.com.