04-22-2026, 09:40 PM
[center]![[Image: 2981a592fe35d3d0ed17d1bbf014b8c8.png]](https://i127.fastpic.org/big/2026/0423/c8/2981a592fe35d3d0ed17d1bbf014b8c8.png)
Gd&t Mastery: Geometric Dimensioning & Tolerancing
Published 4/2026
Created by Omar Koryakin
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: All Levels | Genre: eLearning | Language: English | Duration: 24 Lectures ( 1h 18m ) | Size: 432 MB[/center]
Read any drawing, run any tolerance stack-up, design functional gauges
What you'll learn
✓ Read any feature control frame and explain every compartment
✓ Identify and apply all 14 GD&T symbols from the ASME Y14.5-2018 standard
✓ Pick the right datum scheme using the 3-2-1 rule
✓ Interpret true position with Ø zones and bonus tolerance
✓ Decode a real engineering drawing with multiple GD&T callouts
✓ Run a 1D tolerance stack-up by hand worst case and RSS
✓ Handle 2D vector stack-ups when the stack isn't along one axis
✓ Calculate virtual condition and resultant condition
✓ Design a functional gauge from the MMC + tolerance
✓ Apply projected tolerance zones to threaded holes and press-fit pins
✓ Use datum targets for castings, forgings, and rough surfaces
✓ Understand the Y14.5-2018 updates CF, unified profile, new defaults
Requirements
● Basic familiarity with engineering drawings is helpful but not required
● No CAD software is needed - all examples are shown in the course
● Pen and paper (or a notes app) for the stack-up calculation lessons
● Curiosity about how precision parts actually get made
Description
GD&T isn't just another set of symbols. It's the language every designer, manufacturer, inspector, and supplier on a drawing must share. When two companies hand the same part to two different quality teams and both read it the same way, that's GD&T working. When they read it differently and the part ships wrong, that's GD&T missing and it costs money every single day. This course takes you from zero to fluent in 24 focused lessons. Every lesson is short, self-contained, and built around a real engineering situation not symbol memorization for its own sake.
What makes this course different
• Every concept is shown, not just told. You'll see the tolerance zone, the datum frame, the virtual condition envelope, the functional gauge. If you've struggled to "picture" GD&T before, this is what was missing.
• Built around real drawings. Lesson 12 decodes a full mounting bracket with 8 GD&T callouts. By the end of that lesson alone you'll read drawings your colleagues still argue about.
• Covers the math. Lessons 20-22 walk through worst-case stack-up, 2D vector stack-up, and statistical (RSS) stack-up step by step, with full numbers. No hand-waving.
• Up to date with ASME Y14.5-2018. Lesson 24 breaks down exactly what changed from the 2009 standard, so you're not reading a 15-year-old interpretation.
• Principles before shortcuts. I teach the reasoning behind each modifier (MMC, LMC, RMB ====, MMB, CF) so you pick the right one on a real design not just memories what each symbol looks like.
Who I am
Principal Engineer with 15+ years designing and releasing precision mechanical assemblies. I've owned the drawing set for parts that went into production, sat across from suppliers arguing about whether a callout meant what we thought it meant, and trained junior engineers and CAD designers into GD&T fluency on the job.
I've taught over 38,000 students across Udemy in mechanical engineering, drafting, and quality topics, and I'm a certified SolidWorks Professional (CSWP).
What's inside the full 24-lesson outline
Foundations (Lessons 1-5)
1. Why GD&T Exists the assembly-line problem ± tolerancing cannot solve
2. All 14 GD&T Symbols organized into 5 categories that make sense
3. Datums the 3-2-1 rule and why order matters
4. Reading Feature Control Frames every compartment, left to right
5. True Position why ± gives a smaller zone than GD&T
The five families of control (Lessons 6-10)
6. Form Tolerances flatness, straightness, circularity, cylindricity
7. Orientation Tolerances perpendicularity, parallelism, angularity
8. MMC and Bonus Tolerance why MMC gives free tolerance
9. Profile Tolerances one symbol, any shape
10. Runout what the dial indicator actually sees
Applied GD&T (Lessons 11-15)
11. Tolerance Stack-Up worst-case, RSS, and why it matters
12. Real Drawing Decoded a complete bracket with 8 callouts
13. Virtual and Resultant Condition in one formula
14. Projected Tolerance Zone when the zone lives above the surface
15. Tangent Plane and Free State Ⓣ and Ⓕ modifiers explained
Advanced topics (Lessons 16-19)
16. Datum Targets points, lines, areas on real castings
17. Composite Position two lines in one FCF, two controls
18. Simultaneous Requirements when same FCF means same zone
19. Datum Reference Modifiers RMB , MMB, LMB and datum shift
Calculations and practice (Lessons 20-24)
20. 1D Stack-Up four steps, with full numbers
21. 2D Vector Stack-Up when the stack isn't one axis
22. Statistical Stack-Up RSS, Cpk, and when the math is safe
23. Functional Gauge Design sizing pins from MMC + tolerance
24. ASME Y14.5-2018 Update what changed from 2009
How you'll learn
Short lessons, dense visuals, one idea per lesson. You'll see the part, the tolerance zone, the datum frame, and the verdict side by side. Every lesson ends with a recap so you can come back any time and refresh one concept without replaying the whole course. By the end you will read any engineering drawing confidently, run a stack-up that holds up in a design review, and know exactly which modifier to reach for on a new design.
Who this course is for
■ Mechanical engineers who want to stop guessing and start speaking GD&T fluently
■ Quality engineers and inspectors who read drawings every day
■ CAD designers and drafters moving from ± tolerancing to GD&T
■ Manufacturing and process engineers dealing with supplier drawings
■ Engineering students preparing for industry
■ Supplier-quality engineers reviewing incoming drawings from customers
■ Anyone who has ever asked "but what does this symbol actually mean on a real part?"
Gd&t Mastery: Geometric Dimensioning & Tolerancing
Published 4/2026
Created by Omar Koryakin
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: All Levels | Genre: eLearning | Language: English | Duration: 24 Lectures ( 1h 18m ) | Size: 432 MB[/center]
Read any drawing, run any tolerance stack-up, design functional gauges
What you'll learn
✓ Read any feature control frame and explain every compartment
✓ Identify and apply all 14 GD&T symbols from the ASME Y14.5-2018 standard
✓ Pick the right datum scheme using the 3-2-1 rule
✓ Interpret true position with Ø zones and bonus tolerance
✓ Decode a real engineering drawing with multiple GD&T callouts
✓ Run a 1D tolerance stack-up by hand worst case and RSS
✓ Handle 2D vector stack-ups when the stack isn't along one axis
✓ Calculate virtual condition and resultant condition
✓ Design a functional gauge from the MMC + tolerance
✓ Apply projected tolerance zones to threaded holes and press-fit pins
✓ Use datum targets for castings, forgings, and rough surfaces
✓ Understand the Y14.5-2018 updates CF, unified profile, new defaults
Requirements
● Basic familiarity with engineering drawings is helpful but not required
● No CAD software is needed - all examples are shown in the course
● Pen and paper (or a notes app) for the stack-up calculation lessons
● Curiosity about how precision parts actually get made
Description
GD&T isn't just another set of symbols. It's the language every designer, manufacturer, inspector, and supplier on a drawing must share. When two companies hand the same part to two different quality teams and both read it the same way, that's GD&T working. When they read it differently and the part ships wrong, that's GD&T missing and it costs money every single day. This course takes you from zero to fluent in 24 focused lessons. Every lesson is short, self-contained, and built around a real engineering situation not symbol memorization for its own sake.
What makes this course different
• Every concept is shown, not just told. You'll see the tolerance zone, the datum frame, the virtual condition envelope, the functional gauge. If you've struggled to "picture" GD&T before, this is what was missing.
• Built around real drawings. Lesson 12 decodes a full mounting bracket with 8 GD&T callouts. By the end of that lesson alone you'll read drawings your colleagues still argue about.
• Covers the math. Lessons 20-22 walk through worst-case stack-up, 2D vector stack-up, and statistical (RSS) stack-up step by step, with full numbers. No hand-waving.
• Up to date with ASME Y14.5-2018. Lesson 24 breaks down exactly what changed from the 2009 standard, so you're not reading a 15-year-old interpretation.
• Principles before shortcuts. I teach the reasoning behind each modifier (MMC, LMC, RMB ====, MMB, CF) so you pick the right one on a real design not just memories what each symbol looks like.
Who I am
Principal Engineer with 15+ years designing and releasing precision mechanical assemblies. I've owned the drawing set for parts that went into production, sat across from suppliers arguing about whether a callout meant what we thought it meant, and trained junior engineers and CAD designers into GD&T fluency on the job.
I've taught over 38,000 students across Udemy in mechanical engineering, drafting, and quality topics, and I'm a certified SolidWorks Professional (CSWP).
What's inside the full 24-lesson outline
Foundations (Lessons 1-5)
1. Why GD&T Exists the assembly-line problem ± tolerancing cannot solve
2. All 14 GD&T Symbols organized into 5 categories that make sense
3. Datums the 3-2-1 rule and why order matters
4. Reading Feature Control Frames every compartment, left to right
5. True Position why ± gives a smaller zone than GD&T
The five families of control (Lessons 6-10)
6. Form Tolerances flatness, straightness, circularity, cylindricity
7. Orientation Tolerances perpendicularity, parallelism, angularity
8. MMC and Bonus Tolerance why MMC gives free tolerance
9. Profile Tolerances one symbol, any shape
10. Runout what the dial indicator actually sees
Applied GD&T (Lessons 11-15)
11. Tolerance Stack-Up worst-case, RSS, and why it matters
12. Real Drawing Decoded a complete bracket with 8 callouts
13. Virtual and Resultant Condition in one formula
14. Projected Tolerance Zone when the zone lives above the surface
15. Tangent Plane and Free State Ⓣ and Ⓕ modifiers explained
Advanced topics (Lessons 16-19)
16. Datum Targets points, lines, areas on real castings
17. Composite Position two lines in one FCF, two controls
18. Simultaneous Requirements when same FCF means same zone
19. Datum Reference Modifiers RMB , MMB, LMB and datum shift
Calculations and practice (Lessons 20-24)
20. 1D Stack-Up four steps, with full numbers
21. 2D Vector Stack-Up when the stack isn't one axis
22. Statistical Stack-Up RSS, Cpk, and when the math is safe
23. Functional Gauge Design sizing pins from MMC + tolerance
24. ASME Y14.5-2018 Update what changed from 2009
How you'll learn
Short lessons, dense visuals, one idea per lesson. You'll see the part, the tolerance zone, the datum frame, and the verdict side by side. Every lesson ends with a recap so you can come back any time and refresh one concept without replaying the whole course. By the end you will read any engineering drawing confidently, run a stack-up that holds up in a design review, and know exactly which modifier to reach for on a new design.
Who this course is for
■ Mechanical engineers who want to stop guessing and start speaking GD&T fluently
■ Quality engineers and inspectors who read drawings every day
■ CAD designers and drafters moving from ± tolerancing to GD&T
■ Manufacturing and process engineers dealing with supplier drawings
■ Engineering students preparing for industry
■ Supplier-quality engineers reviewing incoming drawings from customers
■ Anyone who has ever asked "but what does this symbol actually mean on a real part?"
Code:
https://rapidgator.net/file/bd67fb6a91713a7cd1c5605141b4ab2c/GD&T_Mastery_Geometric_Dimensioning_&_Tolerancing.rar.html
https://nitroflare.com/view/7259D6E736A5818/GD%26amp%3BT_Mastery_Geometric_Dimensioning_%26amp%3B_Tolerancing.rar