Grinding Doc Series

Videos • February 6, 2012

PM grinding truth

A shop that switched to powder-metallurgy steel after being told it would be easier to grind has found the opposite to be true. For some facts, the shop turned to Dr. Jeffrey Badger, the host of Cutting Tool Engineering's Grinding Doc Video Series. Watch the 26th episode now.

Videos • January 6, 2012

Grinding friability

A wheel manufacturer recommended that a machine shop switch from brown alumina to white alumina because the latter is more friable. For his 25th episode, Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, analyzes the wisdom of this move.

Videos • December 6, 2011

No-dress test

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, responds to a shop that performs high-production grinding of small parts and experiences trouble when determining how much to dress a wheel. Watch the 24th episode now.

Videos • September 6, 2011

All bark, no bite

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, fields a question from a shop taking smaller and smaller finishing passes and several spark-out passes in order to get tight tolerances and a good surface finish. But the shop is having trouble getting the wheel to bite into the workpiece. All it does is ride over the top, and the shop is using high-pressure oil. How can the shop get the wheel to bite? The Grinding Doc responds in this 23rd episode of the video series.

Videos • August 6, 2011

High-porosity wheel to rescue?

A shop with burn issues wants to know if a high-porosity wheel would reduce temperatures as suggested by the company's wheel supplier. Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, offers some guidance in the 22nd episode of the video series.

Videos • July 6, 2011

Grinding: Up or down?

For the 21st episode of Cutting Tool Engineering magazine's Grinding Doc Video Series, a shop wondered whether it's better to up-grind or down-grind? Dr. Jeffrey Badger, the host of the video series, responds.

Videos • June 6, 2011

Why One Conditioning Stick Outperforms Another in Carbide Grinding

A shop grinding tungsten carbide with a resin-bonded diamond wheel asked the Grinding Doc about the difference between two conditioning sticks purchased from two differrent suppliers. With one stick the shop can do a lot more parts between stickings. Why is this? Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, responds in the 20th episode of the video series.

Videos • May 5, 2011

Hearing MQL talk

Is minimum quantity lubrication the wave of the future or simply another option shops should keep in mind? Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, responds in the 19th episode of the video series.

Videos • April 5, 2011

Feeling the burn

A shop experiencing more wheel wear and burn after switching from one high-speed steel grade to another that reportedly offers lower grindability—requiring slower feedrates—seeks a recommendation for a wheel that won't require the shop to increase cycle time. Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, considers the shop's options in the 18th episode of the video series.

Videos • March 5, 2011

Finding the sweet spot

One wheel sales guy says finding the sweet spot on a wheel is all about material-removal rates. Another guy keeps talking about wheel speed. A shop turned to Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, to find out who's right in the 17th episode of the video series.

Videos • February 5, 2011

Spindle vs. Spindle

Faced with two machines exactly the same, except that one has a newer spindle, a grinding shop wants to know if there's a way to determine if the newer spindle is stiffer than the older one on the other machine. Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, analyzes the situation in the 16th episode of the video series.

Videos • January 5, 2011

Wheel consumption

A shop performing continuous-dress, creep-feed grinding on nickel alloys contacted Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, for advice on battling burn while reducing wheel consumption. Check out Badger's response in the 15th episode of the video series.