| 1 MINUTE READ

Video: Flat-Bottom Drill Versus Conventional

See how a flat-bottom drill tends to shear material as it exists the back side of a workpiece, leaving behind a minimal burr.

Share

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Flat-bottom drills are nifty tools. Those that have true 180-degree flat cutting edges can create holes on inclined or curved surfaces without a preliminary center drilling operation to create a start hole. And unlike conventional drills, flat-bottom drills tend to shear material as it exists the back side of a workpiece instead of pushing through, leaving behind a minimal burr.

The video above demonstrates this. Produced by Nachi, it shows a slow-motion comparison of a conventional drill and the company’s Aqua Drill Ex Flat completing a through-hole. You can see the tip of the conventional drill pushing through the material, whereas the flat-bottom drill performs more of a shearing operation. The video also shows the flat-bottom drill creating holes in inclined and contoured surfaces without requiring a starter hole.

�

RELATED CONTENT

  • Rolling Threads Has Advantages

    With macros and canned cycles resident in the CNC on most contemporary turning centers, single point turning of OD threads can seem like almost a default process decision. However, for numerous applications, OD thread rolling has inherent advantages as an alternative to cutting threads.

  • Start With The Right Speeds And Feeds

    Running rotary milling cutters at the proper speeds and feeds is critical to obtaining long tool life and superior results, and a good place to start is with the manufacturer's recommendations. These formulas and tips provide useful guidelines.

  • Inserts For Difficult Materials

    Economic efficiency is an important consideration when choosing tools for challenging metals.