GD&T Basics

GD&T Basics At GD&T Basics we break down the complex world of GD&T and focus only on exactly what you need for success in engineering or machining.

Concentricity would just like to know what runout has that it doesn't. Besides being measurable... and practical...and s...
06/15/2026

Concentricity would just like to know what runout has that it doesn't. Besides being measurable... and practical...and still in the standard.

Most GD&T questions have an answer. It's called ASME Y14.5. You're welcome.
06/12/2026

Most GD&T questions have an answer.
It's called ASME Y14.5.
You're welcome.

In GD&T, the placement of a flatness callout matters just as much as the symbol itself.In this video, Brandon explains t...
06/10/2026

In GD&T, the placement of a flatness callout matters just as much as the symbol itself.

In this video, Brandon explains the difference between flatness applied to a surface and flatness applied to a feature of size (FOS), including:
• How each is shown on a drawing
• What each one controls
• How they’re inspected

If flatness callouts have ever seemed confusing, this breakdown makes the differences much easier to understand.
https://hubs.la/Q04hvNMB0

If you've ever just thrown it in the title block without thinking about it... Profile of a Surface noticed.
06/08/2026

If you've ever just thrown it in the title block without thinking about it... Profile of a Surface noticed.

Engineering and manufacturing walking into the same design review. Engineering: "The tolerances are achievable."Manufact...
06/05/2026

Engineering and manufacturing walking into the same design review.
Engineering: "The tolerances are achievable."
Manufacturing: "On what machine?"
Real question: whose job is it to know what's actually achievable before the drawing gets released?
Drop your take below.

Ever wondered why tool handles, barbells, and press-fit parts have that textured pattern on them?It’s called knurling — ...
06/03/2026

Ever wondered why tool handles, barbells, and press-fit parts have that textured pattern on them?
It’s called knurling — and it’s more than just decoration.
In this video, we break down:
• What knurling is
• Common knurl patterns and applications
• How knurling is called out on engineering drawings
https://hubs.la/Q04hlQ4f0

For years, we've been building our GD&T resources the old fashioned way...manually, from scratch, one chart at a time.Bu...
06/02/2026

For years, we've been building our GD&T resources the old fashioned way...manually, from scratch, one chart at a time.
But looking around LinkedIn, it's clear we've fallen behind. Everyone else has been using AI to create their GD&T content.
We didn't want to be the last ones to jump on the bandwagon, so we did too.

If you're not taking advantage of what MMC is offering, you're leaving good parts on the floor.
06/01/2026

If you're not taking advantage of what MMC is offering, you're leaving good parts on the floor.

Nothing strengthens cross-department relationships like a promise that was made without engineering in the room.
05/29/2026

Nothing strengthens cross-department relationships like a promise that was made without engineering in the room.

If composite profile has ever sparked a debate between engineering and inspection, this one’s for you:In this Question L...
05/27/2026

If composite profile has ever sparked a debate between engineering and inspection, this one’s for you:
In this Question Line video, Jason explains composite profile interpretation, taking a closer look at how to understand the lower frame. Using a real drawing example, he walks through the composite profile callout, drawing considerations, and inspection implications.
https://hubs.la/Q04gGs_S0

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