In which we discuss using coolant on grinders. Spencer reviews three generations of grinders and what coolant solutions were used on each. We report a new country for PFG Stones exports, and a new company in the US. We followup on the toolpost improvements, including a calculation of how much power is delivered into the cut using the cutoff tool on titanium as show in a recent video.

We discuss the next step in the Entirely Adequate toolpost modifications.

The Bambu 3D printer has arrived on the market with some fanfare, and we discuss the reports we are hearing about it. We learn from Kevin that a new PRUSA has also been announced.

The audio portion of the PFG Live! from YouTube. The weekly exploration of machining, toolmaking and engineering. Brought to you by Kinetic Precision, makers of PFG Stones (tm). Learn more at PFGStones.com.

Watch Wood Creek Workshop for Yuchol's PFG Stone shoutout:  @woodscreekworkshop9939 

Follow me on Instagram at "spencer_webb_nh".

("PFG Stones" is a trademark of Kinetic Precision)

Lapping Under Control? Feedback vs. Feedbag. Better Resin Printing on Form 3+. 1000 Electric Miles!

All this and more...

NOZ information at: https://www.kineticprecision.com/noz or NOZ.GG

PFG Stone information at: https://www.kineticprecision.com/all-about-pfg-stones1 or PFG.GG

All my links at: https://www.kineticprecision.com/links or PFG.GG/links

I love my Kaeser compressor: https://us.kaeser.com/ #notsponsored

Thanks again to Tom Lipton @oxtoolco , Robin Renzetti @ROBRENZ , and Adam Balogh @machinetechvideoblog801 for being such good teachers.

Follow me on Instagram at "spencer_webb_nh".

("PFG Stones" is a trademark of Kinetic Precision)

Machining, toolmaking, precision. Can you afford not to watch this? Yah, we didn't think so.

We went long, very long, but it was worth it. Many thanks to Tom and Robin for sharing their wisdom and good humor.

Here are the links to the interviews on Within Tolerance Podcast:

Episode 71 - Robin Renzetti: https://podcasts.apple.com/us/podcast/within-tolerance-episode-71-robin-renzetti/id1474857063?i=1000497233902

Episode 35 - Tom Lipton: https://podcasts.apple.com/us/podcast/within-tolerance-episode-35-tom-lipton/id1474857063?i=1000466789305

Episode 97 - Spencer Webb: https://podcasts.apple.com/us/podcast/within-tolerance-episode-97-spencer-webb/id1474857063?i=1000525186451

("PFG Stones" is a trademark of Kinetic Precision)

Am I really heat-treating at 65 MPH? Can a shop be too organized? How to counteract the attractive force of a surface plate? These answers and more...

Mentions:

@KnifeSteelNerds - A great education on tool steels and treatments

@AdamBrunette - Thanks, buddy! Adam is building a HUGE 3D printer!

@JohnGrimsmo - The knife man, knife myth, knife legend.

@oxtoolco - Author, Teacher, Man of Mystery.

@ROBRENZ - Toolmaker, teacher, Doctor of Precisionology.

https://www.mcmaster.com/ - The Good Yellow Book

https://www.ford.com/trucks/f150/f150-lightning/ - The Ford Lightning @ford

https://www.americanrotary.com/product-category/hot-shot-ovens/ - Hot Shot Ovens @Americanrotary

Links for the bakers' racks and everything else I buy are in my links page: pfg.gg/links (or https://www.kineticprecision.com/links)

("PFG Stones" is a trademark of Kinetic Precision)

In which we talk about Spencer's new Ford F-150 Lightning EV. We discuss some details of Lapping Disease, and lament the lack of progress this past week. And we announce....

On February 19th we will have TWO simultaneous guests on the PFG Live, none other than Tom Lipton (@oxtoolco) and Robin Renzetti (@robrenz). Spencer's job is to start trouble. See ya there.

For all the links to stuff I use: https://PFG.GG/links

The Monochromatic Rabbit Hole: https://kineticprecision.com/monochromatic

McMaster-Carr: https://www.mcmaster.com/

("PFG Stones" is a trademark of Kinetic Precision)

In which Spencer takes the plunge and starts lapping, enjoys some initial success followed by frustration. And then followed by an epiphany, which led to Flatosity. And then screws it up.

Excellent input from the Chat Room, much to learn there.

How do you start controlling flattness at the tens-of-nanometers scale? Join us on the journey.

...and don't call me Shirley.

("PFG Stones" is a trademark of Kinetic Precision)

In which Tom Lipton catches us up on his shop developments, which include, but are not limited to:

Lapping

EDM (electronic dance music, or if you prefer, Electrical Discharge Machining)

Carne Asada with marinated skirt steak.

The Abernathy patent for lapping plates: https://patents.google.com/patent/US3287862A/en

("PFG Stones" is a trademark of Kinetic Precision)