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Great *visual* GD&T tips (eg Concentricity + Circularity ~= Runout... sort of)

michelle
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I'm not promoting - I'm just sharing a great resource I found for *visual* G&T tips and explanations: http://www.tec-ease.com/gdt-tips.htm
I am more visual than I am wordy in order to understand things. This is a goodie:
Does Run out Equal Concentricity?—Sort Of.

Here's a complete listing of the free tips at http://www.tec-ease.com/gdt-tips.htm :
Actual Mating Envelope
Angularity
Angularity Does Not Locate Video Clip
ASME Y14.5-2009 Video Clip
Basic Dimensions
ASME Y14.41 - 2003
Boundaries
Centerlines
Circularity
Coaxiality Controls
Composite Tolerancing Video Clip
Concentricity
Circular Runout Video Clip
Corporate Addendum Video Clip
Cpk
Cylindricity Inspection
Datum
Auxiliary Datum Video Clip
Control of Datum Features Video Clip
Datum Reference Frame
Datum Shift
Datum versus Datum Feature Video Clip
Degrees of Freedom
Center Video Clip
Planer Video Clip
Spheres Video Clip
Orienting Datum Planes Video Clip
Patterns of Features
Primary Datum Feature Control
Primary Datum Surface Control
Referencing Itself
Repetitive Patterns
Selection
Selection Based on Function Video Clip
Selection - Sufficient in Size
Simultaneous Requirements Video Clip
Symbol Placement
Targets Video Clip
Directly Toleranced Dimensions
Drawing “Previews" Video Clip
Exact Constraint
Extensions of Principle
Formed Tubes, Rods, Etc. Video Clip
Feature of Size Video Clip
Feature Control Frame Video Clip
Features Have Axes Video Clip
Fixed and Floating Fasteners
Flatness
Free State
Inspection
Boundaries
Flatness
General
Hard Gage Simulation
Normal to the Surface
Probe Size
Location Tolerances
MMC and LMC
Notes On Drawings
Orientation Video Clip
Origin Symbol
Parallelism
Pick Your GD&T Tools Wisely Video Clip
Patterns of Features
Creating Patterns
Pattern - Simultaneous Requirements
Perpendicularity Video Clip
Position
Basic Dimensions
Coaxial Control Video Clip
Composite
General
Composite
Location of Irregular Feature
Material Condition Modifiers
Oblique Holes
Single Segment
Profile
Boundaries
Composite
Controlling Size and Form
Coplanarity Video Clip
Features of Size
General
Increases Tolerance
Inspection
Location of Irregular Feature
Location of Planes
Maximum Material Condition Video Clip
Profile vs Direct Tolerancing
Profile of a Line
Reporting Profile Inspection
Schedule of Tolerances
Surface Video Clip
Surface Tolerance
Tolerance
Unequal and Unilateral
Rounding Numbers
Runout
Circular Runout Video Clip
Circular vs Total
Runout vs Concentricity
Total Runout
Rules
Rule 1 Video Clip
Don’t Be Tricky with GD&T Video Clip
Size
Controlling Form
General
Inspection
Individual Control
Slots Video Clip
Standards Revisions
Straightness
General
Unit Basis
Symmetry/Position
Tangent Plane
The GD&T Hierarchy Pyramid
Profile Side
Feature of Size Side
Threads
MMC
Projected Tolerance Zone
Tolerances Video Clip
Wall Thickness
cheers, michelle



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  • I E-mailed Don last Thursday as you suggested, I also included “A part that passed Concentricity, Circularity and Circular Runout would failed Cylindricity and Total Runout due to taper”.
    So far no response from him…..will see.
    Just to be clear wouldn't you apply the correct tolerance to meet the design intent of the part, lambo? Seems the argument is over semantics........ but I could be missing something. Confused
  • Just to be clear wouldn't you apply the correct tolerance to meet the design intent of the part, lambo? Seems the argument is over semantics........ but I could be missing something. Confused

    What I meant to say was If you do what the video said, potentially you’re rejecting good parts….
  • lambo and inspector212 make a great point. Although the words in the Tip and the video never said circularity + concentricity = total runout, one graphic in the video did show this. The video has been corrected and will be posted shortly. Also, throughout the video terms like "sort of" and "roughly" were used to say this is a handy Tip but technically not exact. Sorry for any confusion that may have been caused by trying to make the topic more understandable.
  • .
    I'm not promoting - I'm just sharing a great resource I found for *visual* G&T tips and explanations: http://www.tec-ease.com/gdt-tips.htm     Here's a complete listing of the free tips at http://www.tec-ease.com/gdt-tips.ht






    In 2006 they/he started to come to prominence & he is not always 100% on the nail but closer than most.
  • lambo and inspector212 make a great point. Although the words in the Tip and the video never said circularity + concentricity = total runout, one graphic in the video did show this. The video has been corrected and will be posted shortly. Also, throughout the video terms like "sort of" and "roughly" were used to say this is a handy Tip but technically not exact. Sorry for any confusion that may have been caused by trying to make the topic more understandable.

    Thank you for joining us Mr. Don Day.

    lambo.
  • lambo and inspector212 make a great point. Although the words in the Tip and the video never said circularity + concentricity = total runout, one graphic in the video did show this. The video has been corrected and will be posted shortly. Also, throughout the video terms like "sort of" and "roughly" were used to say this is a handy Tip but technically not exact. Sorry for any confusion that may have been caused by trying to make the topic more understandable.

    Welcome Don, your GD&T Tips helped me many times to win arguments with Eng. Dept.
  • Thanks Michelle.
    ...I talked to some folks who did their on-line course and it was applauded also. Good, simple explanations....

    Are you referring to the Teach yourself the Fundamentals of GD&T Computer based training course?

    I'm debating whether or not to go for it. Most of my knowledge is trial and error and I am sure I am missing big chunks of understanding - can anyone recommend this course or any other one of Don's?

    Thanks, Michelle
  • Are you referring to the Teach yourself the Fundamentals of GD&T Computer based training course?

    I'm debating whether or not to go for it. Most of my knowledge is trial and error and I am sure I am missing big chunks of understanding - can anyone recommend this course or any other one of Don's?

    Thanks, Michelle

    Yes, that is the course I was talking about.
    I haven't used it myself, but I have heard good things about it.
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