Lapping From Ra to Rz - I was challenged by @proteummachining to start looking at Rz rather than Ra for surface roughness. Let's see why.

Wireless Devices In The Shop - In which I cross the streams. Inspired by @JohnGrimsmo having issues with his Bluetooth probe, I find it necessary to talk antennas. Again.

The Joy Of Unnecessary Precision - We love to chase it, but at what cost? If you're doing it as a business, know your limits.

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Local Elevator by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/

3-inch ToolMakers Flat: First Lapping! - After all the preparation, I finally do the first lapping... and it rocks. Process improvements will, of course, ensue.

The Expensive Stuff Is Cheaper... Again. - In which I buy a carbide tool which was cheaper, and end up breaking it. Then buying what I should have bought in the first place.

Buying Stuff To Take Apart And Learn - My son, Jared, asks if we can buy a thing to take apart. Because he wants to design a better one. Correct parental answer?? "OF COURSE!!".

And more...

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Local Elevator by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/

P1 is Life - Making the first prototype, and noting how long it lasts. It's a metaphor for ... everything.

Making a Lapping Station - Fixin' to get ready to lap, specifically the ToolMakers Flat TMF-3

What's All The Fuss About An Ellipse?? - A report from the Eclipse, and why Ellipses are interesting.

And more...

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Local Elevator by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/

Storms, Blackouts, Earthquakes, Eclipses! - I wish we were kidding. All this happened in the last week, or will tomorrow.

Success Hand-Tapping, Next Hand-Lapping - We got the 4142 Pre-hard part tapped, and the ToolMakers Flat is ready for hand lapping. What's the plans?

Will A.I. Design and Machine Your Parts? - It's starting to be a question.

And more...

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Followup on the ToolMakers Flat in 52100 Steel...

Quicken The Quench: Heat The Oil? - A casual question from Tom Lipton set me on a course... does heating the quenching oil quicken the quench.

Does the Temper Negate The Cryo? - Spoiler: No. They do different things.

Crappy Tapping In 4142 Pre-Hard - I am not having fun with this operation. There are reasons.

And more...

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Of Clock Springs And Toolmakers Flats: Turning the 52100 steel produced some pretty evil chips. Some of them broke.

52100 Steel: Planning The Heat Treatment: We are ALMOST running the recipe recommended by the NBS (now NIST) many years ago. Will our minor deviations matter? We'll see.

A Box Of Grinding Gems From Tom: Books and goodies from Tom Lipton. Very neat stuff, and the knowledge was hard-earned by our ancients.

And more...

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Rotary OD Lapping: Sine Rolls - We make a soft lap from scrap. We struggle with three different compound choices, and end up where we should have in the first place.

Evaluating Round, Straight, Size - It's not trivial down in the Tenths.

Crash Recovery: Just Breathe - It happened. Nobody died. Nothing broke. We'll do laundry later...

And more...

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Successful Sidewheeling - We learn about "forming" the wheel, and finally nailing the dimenensions.

I Didn't Expect The Backlash! - Would have been fine in a mill, not so much in a surface grinder. But, we overcame.

Sine Right Here: Charles W. Sullivan - His signature is preserved, and we thank him for a cool tool.

We went deep on side-wheeling with Robin Renzetti @ROBRENZ .

And more...

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Restoring and Using Tools: Getting old tools, especially shop-made tools, back to working order and using them productively.

Tighten Your Hub: Staying concentric, stable, true and dressed. Oh, and also in your grinding...

Helping Non-Machinists: There Is No Sketch: We make brackets. But, we need to become communicators with those that don't have the technical skills, but still have stuff they need.

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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

Grinder Therapy: We discuss "grinding in" two cast iron instruments for our friend UnixCarbide

Autocollimated Boring: Unix completes the supply chain by delivering bagels... and some goodies from across the planet

Decluttering With Mental Money: How Two Bucks is going to save your shop

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

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