PFG Live

Latest Episodes:

PFG Live 2023-0212: Portable Heat Treating? Feb 13, 2023

Show notes

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)

PFG Live 2023-0205: Lapping Up Electrons Feb 06, 2023

Show notes

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)

PFG Live 2023-0129: The Eye of Flatosity Jan 30, 2023

Show notes

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)

PFG Live 2023-0122: Tom Lipton Jan 23, 2023

Show notes

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)

PFG Live 2023-0115: Lapping with Adam Jan 16, 2023

Show notes

Guest Adam Balogh joins us to discuss lapping and his exploits in telescope mirror making. We draw parallels (!) between lapping mirrors and lapping in precision machining. Much is learned. Things mentioned: Adam's Instagram: https://www.instagram.com/laneymachinetech/ ABLAP: https://ablap.com/ Cerium Oxide: https://en.wikipedia.org/wiki/Cerium(IV)_oxide Surplus Shed: https://www.surplusshed.com/ Zerodur: https://en.wikipedia.org/wiki/Zerodur Caswell Plating: https://caswellplating.com/ Telescope mirror blanks: http://www.telescopemirrorblanks.com/mirror_blanks.html Newport Glass: http://www.newportglass.com/angwcat.htm Advanced Glass: https://www.advancedglass.net/index.cfm?Page=Telescope-Mirror-Blanks The guy who did all the mirrors for John Dobson and the sidewalk astronomers: http://www.alcoat.net/ Majestic Coatings: http://www.majestic-coatings.com/ Spectrum Coatings: https://www.spectrum-coatings.com/ Observatories with telescope making workshops: https://chabotspace.org https://stellafane.org/ Source for the spray-on silvering solution for front surface mirrors: https://angelgilding.com/pump-spray-silver-kit.html Links to more stuff is at https://pfg.gg/links ("PFG Stones" is a trademark of Kinetic Precision)

PFG Live 2023-0108: Cool Grinding, Hot Coolant Jan 09, 2023

Show notes

Aaron Walla joins Spencer to discuss some new topics and follow-up on his search for a grinder in his home shop We talk coolant, thermal control of coolant, tools and toys. Follow Aaron on Instagram at "@walla.tool" Follow me on Instagram: "@spencer_webb_NH" 200-Watt magnet heater: https://amzn.to/3Xx4e38 800-Watt submerged heater: https://amzn.to/3QCku0y Temperature controller: https://amzn.to/3IJDxEv Lutron Caseta remote controlled outlet: https://amzn.to/3H50l0j Qualichem 250C data sheet: http://backend.qualichem.com/product_docs/df183_Xtreme%20Cut%20250C%20(1.12.15).pds.pdf ("PFG Stones" is a trademark of Kinetic Precision)

PFG Live 2022-1218: Buying a new Surface Grinder Dec 19, 2022

Show notes

With guest Aaron Walla of Walla Tool (@walla.tool on IG), in which we discuss choosing and purchasing a surface grinder to fit the requirements of the shop. And offer Aaron Walla unwanted advice to "help" him with his decision. And the usual stuff. (Apologies for the technical quality of this live production. I was troubleshooting issues right up to launch time, and decided to proceed with lower video quality rather than delay. I vow to solve these issues for the next one. -SW) Follow me on Instagram: "@spencer_webb_NH" ("PFG Stones" is a trademark of Kinetic Precision)

PFG Live 2022-1211: Thermal Battleaxes Dec 12, 2022

Show notes

In which we report on the effectiveness of heating the coolant to make up for winter. Thermal growth in the grinding is calculated. The supply chain is repaired. The Hive-Mind helps design battleaxes for me, per the request of conjette.art. Really. Follow me on Instagram: "@spencer_webb_NH" 800-Watt submerged heater: https://amzn.to/3QCku0y Temperature controller: https://amzn.to/3IJDxEv ("PFG Stones" is a trademark of Kinetic Precision)

PFG Live 2022-1204: Thermal Control? Dec 05, 2022

Show notes

The YT switchover. Mom's 167 boxes. Making a coolant cozy. The surprising thermal mass of 30 gallons of coolant. Bubbler Stone: https://www.amazon.com/gp/product/B08B3MX4BP/ Oil Pan Heater: https://www.amazon.com/gp/product/B0076DUV2Q/ Heater Controller: https://www.amazon.com/gp/product/B01486LZ50/ Follow me on Instagram: "@spencer_webb_NH" ("PFG Stones" is a trademark of Kinetic Precision)

PFG IG Live 2022-0501: Stefan Gotteswinter May 02, 2022

Show notes

Special Guest: Stefan Gotteswinter (@stefan_gtwr on IG, Stefan Gotteswinter on YT). Precision Cordless Drill Balancing. Side-saddle Grinding. What a pair of stones! Learning to be, and not to be precise. Legal beer. 0:00 Welcome and housekeeping 4:00 Stefan Gotteswinter joins 5:25 Has Stefan been following Spencer's interest in lapping? 5:50 Stefan's recent video about drilling on the lathe using the carriage instead of the tailstock. 8:00 Giving away a McMaster-Carr catalog 11:05 Any tips on making Annular Cutters 12:30 Favorite or preferred brand of lapping compound? 15:30 Follow up on annular cutter, to use on a lathe 17:00 Silver Steel is a term used in the UK for Drill Rod; it's Silberstahl in German 17:55 What German Ginger Beer does Stefan recommend? 18:55 If Ginger Beer is illegal in Germany, how do you Justify Radler? 20:30 What is the smallest part Stefan has made in his shop? 21:18 How difficult is it for Stefan to get parts Nitrided 22:13 If you had Elon Musk's money, which Mill or Lathe do you buy? 23:50 What is your favorite way to "Clock Out" a headstock? 26:55 For M1.2 Tapped hole what type of Tap do you recommend? 28:15 Adam B says he has a way to align a Headstock with the Cross Slide using a Special Tool that has a Gauge Ball on it. Details to Follow. 29:10 How to prevent M3 Taps breaking in stainless steel on a CNC lathe? 34:20 Marvin Groeb @marvgro recommends Zirconia nanoparticles as a lubricant 30:45 How to improve the rigidity between the head and vertical column of an RF-45 32:20 Do you use IPA (isopropyl alcohol) on steel in the CNC router? How do you prevent it catching fire? 35:05 Stefan is asked for his opinion on Adam Demuth's (@adamthemachinist) 3D printed Vee blocks 36:55 Stefan is asked for drawings of his addendum to Robin Renzetti's D-Bit Grinder modifications 38:05 Adam B (@Laneymachinetech) ask for Stefan's comments on Cylindrical Grinding and Lapping to optimize geometry and surface finish. 42:05 Spencer asks Stefan about his new Grinder 51:30 What do people need to learn to do more precise work. 53:50 Stefan is asked to regrind precision ground stones that he mad for a customer. 57:45 When grinding a radius on the D-Bit, how do you indicate the offset of the work? 59:10 What is the spindle speed of the D-Bit? 59:50 What projects does Stefan most enjoy? 1:01:30 What is missing from Stefan's tool collection?

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