Grinding Doc Series

Videos • March 5, 2013

Rust never grinds

In this 38th episode of Cutting Tool Engineering magazine's Grinding Doc Video Series, host Dr. Jeffrey Badger helps a shop deal with the brown, yellow and blue marks that keep appearing on an unground surface. He addresses the difference between oxidation burn, or rust, and genuine thermal damage.

Videos • February 5, 2013

What’s your Q-prime number?

A shop that grinds tungsten-carbide endmills using a resin-bonded diamond wheel turned to Dr. Jeffrey Badger for the 37th episode of Cutting Tool Engineering magazine's Grinding Doc Video Series because one of the shop's wheel suppliers was talking about Q prime values. According to the supplier, the shop should be using a Q prime value of 6 or 7. So the shop asked the Grinding Doc, "What's up with Q prime values?"

Videos • January 6, 2013

Nitty gritty on chatter

A wheel supplier urged a shop to use a 150 mesh grit wheel to put a 0.005" radius into a part, but when the shop went from its 80 mesh grit to the smaller grit the result was horrific chatter. In fact, the shop always gets chatter from small grit wheels. For some explanation, the shop wrote to Dr. Jeffrey Badger, the host of Cutting Tool Engineering's Grinding Doc Video Series, for the 36th episode of the video series.

Videos • December 6, 2012

Grinding Doc takes a closer look

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, takes a closer look at a string of photos he has taken at extreme magnifications to better understand what's happening to the wheel surface in a variety of grinding applications. He shares a number of those photos in the 35th episode of the video series.

Videos • November 6, 2012

A sticking point

A shop that grinds tungsten carbide with resin-bonded diamond wheels sought help to settle a disagreement over how hard to stick the wheel. Now that there are machines with auto-stickers, shop staffers are even more confused. Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, offers some suggestions in the 34th episode of the video series.

Videos • October 6, 2012

Material removal rate

Dr. Jeffrey Badger, host of Cutting Tool Engineering magazine's Grinding Doc Video Series, helps a shop determine an appropriate material-removal rate in the 33rd episode of the video series.

Videos • September 6, 2012

Grit size matters

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, discusses the importance of grit size in the 32nd episode of the video series.

Videos • August 6, 2012

Adept adapter question

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, fields a question from a shop truing its diamond wheels offline, then remounting them onto the non-tapered spindle without using an adapter. The shop wondered whether its tight wheel tolerances negate the need for an adapter in the 31st episode of the video series.

Videos • June 6, 2012

The Grinder’s Toolbox

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, offers an overview of his Grinder's Toolbox for those who have grown weary of shop floor calculations.

Videos • May 6, 2012

Dressing diamond etiquette

A shop turned to Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, to find out whether rotating the dressing diamond is really necessary. Check out his response in the 29th episode of the video series.

Videos • April 6, 2012

No time to dwell

During rotary plunge dressing, a shop worker would like to know if dwelling for 2 seconds is the right amount of time. Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, says it's not a matter of time.

Videos • March 6, 2012

Seeking grinding literature

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, offers some personal preferences in regard to grinding books and literature that could prove useful on the shop floor. Watch the 27th episode of the video series now.