The MachinistPost Blog

Drill reconditioning, machining technique, shop management — by machinists, for machinists.

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211 posts  ·  Page 8 of 9
BUSINESS
Drill Bit Resharpening vs Buying New: The Math
Running the actual numbers on resharpening vs replacement to find your shop break-even point.
October 26, 2026
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TECHNIQUE
Drill Bit Reconditioning vs Resharpening
The difference between basic resharpening and full reconditioning, and when each is the right choice.
October 19, 2026
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TECHNIQUE
Drill Bit Point Geometry
How point angle, lip relief, and chisel edge geometry affect drilling performance and tool life.
October 12, 2026
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MATERIALS
Drill Bit Material Selection Upgrade Guide
A step-by-step guide for upgrading drill material selection as your shop needs evolve.
October 5, 2026
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TECHNIQUE
Drill Bit Geometry Field Guide
A practical field reference for identifying, evaluating, and selecting drill geometries on the shop floor.
September 28, 2026
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MATERIALS
Drill Bit Geometry: Aluminum vs Steel
How and why drill geometry needs to change when switching between aluminum and steel workpieces.
September 21, 2026
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MATERIALS
Drill Bit Coatings: TiN, TiAlN, TiCN
A side-by-side comparison of TiN, TiAlN, and TiCN coatings for HSS drill performance.
September 14, 2026
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MATERIALS
Drill Bit Coatings Explained
What drill bit coatings actually do, how they work, and which ones are worth the premium.
September 7, 2026
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TECHNIQUE
Drill Bit Anatomy Guide
A complete labeled breakdown of every part of a twist drill and what each feature does.
August 31, 2026
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TECHNIQUE
Cutting Speed Myths: Faster Is Not Better
Debunking the belief that higher spindle speed always means faster production and better results.
August 24, 2026
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TECHNIQUE
Cutting Fluids Guide For Drilling
Everything a machinist needs to know about cutting fluid selection, dilution, and application for drilling.
August 17, 2026
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TECHNIQUE
Cutting Fluids For HSS Drill Bits
A focused guide to choosing and applying cutting fluids specifically formulated for HSS drill performance.
August 10, 2026
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TECHNIQUE
Cutting Fluids vs Dry Drilling: A Guide
When to use cutting fluid and when dry drilling is actually the better call for your material.
August 3, 2026
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TECHNIQUE
Cutting Fluid For HSS Drill Bits
Which cutting fluids work best with HSS drills and how to apply them for maximum tool life.
July 27, 2026
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TECHNIQUE
Countersinking And Counterboring: The Drill Bit Connection
How your pilot drill geometry and condition directly impact countersink and counterbore quality.
July 20, 2026
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TECHNIQUE
Countersinking And Counterboring Best Practices
Best practices for countersinking and counterboring that produce clean, accurate seating surfaces.
July 13, 2026
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TECHNIQUE
Countersink Geometry: 82 vs 90 vs 100 Degree
When to use 82-, 90-, and 100-degree countersinks and how angle affects fit and finish.
July 6, 2026
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BUSINESS
Cost-Per-Part Drilling Economics
How to calculate true cost per drilled hole and use it to make smarter tooling decisions.
June 29, 2026
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BUSINESS
The Real Cost Of Running Dull Drill Bits
A production-floor accounting of what dull drills actually cost per shift in time, scrap, and tool spend.
June 22, 2026
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EQUIPMENT
Coolant-Through-Spindle Drilling Setup
How to set up and optimize through-spindle coolant delivery for deep-hole and production drilling.
June 15, 2026
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TECHNIQUE
Coolant Concentration And Drill Life Correlation
Data-backed look at how varying coolant mix ratios correlates with measurable changes in drill longevity.
June 8, 2026
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TECHNIQUE
Coolant Concentration And Drill Life
How coolant concentration ratios directly affect HSS drill edge life and hole quality.
June 1, 2026
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MATERIALS
Composite Drilling: Carbon Fiber, Fiberglass, Aramid
How to drill carbon fiber, fiberglass, and aramid composites without delamination or fuzz.
May 25, 2026
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BUSINESS
Complete Guide To Drill Bit Sets
Everything you need to know about building, buying, and maintaining a comprehensive drill bit set.
May 18, 2026
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