Another Rev Question... and Notes (general vs. flag vs. revision)
Another Rev Question... and Notes (general vs. flag vs. revision)
(OP)
Hey all,
Just finished up a project and shipped it complete with spelling errors, flag note errors, general note errors, etc, etc.
My question is. Are spelling corrections revision??? It sounds like it wouldn't be and I can't ever remember issuing a rev based on spelling..
We also had to go back and differentiate between general notes, flag notes and revision notes.
The process taken was to make a flag notes numbers in a square with a leader to the affected area and then the square was also surrounding the number in the notes list.
Revisions were left as a number surrounded by a triangle and then the triangle symbol added to our revision block.
Does anyone know about this stuff? I'd appriciate any insight that can be offered.
Thanks much.
Just finished up a project and shipped it complete with spelling errors, flag note errors, general note errors, etc, etc.
My question is. Are spelling corrections revision??? It sounds like it wouldn't be and I can't ever remember issuing a rev based on spelling..
We also had to go back and differentiate between general notes, flag notes and revision notes.
The process taken was to make a flag notes numbers in a square with a leader to the affected area and then the square was also surrounding the number in the notes list.
Revisions were left as a number surrounded by a triangle and then the triangle symbol added to our revision block.
Does anyone know about this stuff? I'd appriciate any insight that can be offered.
Thanks much.





RE: Another Rev Question... and Notes (general vs. flag vs. revision)
The reality in all the organizations I've been in has been that spelling errors & similar either get left the way they are at release time, or get quietly cleaned up without a revision. Generally this is because people do not want to deal with the overhead of the CO/ECO paperwork associated with formal revisions.
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
In a strict document control situations yes they are. Any change to the drawing should be a revision.
2. Differentiating between flag notes & rev symbols?
Per ASME Y14.35M-1997 only circles are used for revision symbols - however in practice I've seen other symbols and I'm not sure why they limit it to circles so can't get hung up on that. Also per that std where rev symbols may conflict with other symbols they may be omitted.
I'm not aware of anywhere in the standards that explicitly say they should be different. However, it should be commonsense. A drawing should be unambiguous. Using the same symbol for different things is asking for trouble.
Using the same symbol around the number in the note block as for the flag symbol is common practice, not sure if it's in a standard though.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
Chris
SolidWorks 10 SP4.0
ctopher's home
SolidWorks Legion
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
As far as "strict document control situations", I do have one indeed. I think here I'm going to write up an extensive ECO and cite that on the drawing. Exceptable you think?
For example: REV A (or should it be numerical?) Changed per ECOXYZ?
Thanks guys...
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
In aerospace we had to do 'is' - 'was' for any change in such detail that the change could be reversed.
For example:
Note 4 - "DIMENSIONS ARE IN INCHES" was "DEMINSIONS ARE IN INCHES"
Or similar. Maybe now that old copies can be kept digitally that's a bit over the top but I spent many hours writing detailed ECO's like that.
14.24 isn't the correct spec for revision indicators.
Have you tried SQUIRCLES?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
thread404-122631: Control of drawing revision in title block
Chris
SolidWorks 10 SP4.0
ctopher's home
SolidWorks Legion
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
Ideally a minor rev would be a very small/quick approval process, probably involving a relatively small number of people - certainly including the responsible engineer, others would be somewhat dependant on organization structure. A major rev would be a longer and more thorough review, and include most if not all departments in the organization.
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
I tend to start asking questions like:
"How can I trust anything you send me?"
"How can I trust that you are building to the same prints you sent for review?"
"Show me in your documentation procedures where it says that it's ok to have this situation?"
"If you can't follow your documentation procedure how can I trust you to follow any of your procedures?"
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
I would say that any change to a production drawing is a revision. In the revision block, you can state that you corrected spelling, and that there is no change to the as-fabricated part
I do not recognize a difference between major and minor revisions on a fabricated part. For software, it makes sense. You fixed some bugs. You did not add or delete features. At a product (as opposed to assembly) level, you fixed some details, without adding or deleting features.
If you update your revision_A, it does not matter to anyone if you change it to A.1 or to_B. No process is affected. You should not change form, fit or function of your part. Your fabricator must examine your drawing to see what you changed. Production must work out whether or not the old parts in stock can be used as-is.
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
The most important quality for the revision record is to be reversible: "dim was 12 mm, q'ty was 3," etc., so in perfect world it should be possible to reverse part to its original state.
Sinse there is no legitimate need to reverse part back to the wrong spelling, there is no need to attach revision record to spelling corrections.
Obviously, this is one of many ways to look at it.
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
I don't know which standard this was based on, but per the Global DRM 5th edition, para 18.4.8 Undocumented Changes "The following drawing corrections or additions may be made without recording on an ADCN or DCN: similar to data, required approval signatures (except checked), weight information, misspelled words, missing arrowheads, next assembly. Such changes are normally made when incorporating other authorized changes, and will be checked by an authorized checker."
Global has a pretty good reputation at following the standards closely, and I would tend to trust them before I would others (such as Genium) for this type of detail. Granted, the issue I have to refer to was printed back in '85, and may indeed be obsolete.
While I no longer have access to ASME Y14.100 or most of the others, I would not be surprised to find such an exemption somewhere buried in those standards.
"Good to know you got shoes to wear when you find the floor." - Robert Hunter
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
I know, I know... I still sometimes visit fantasy land.
"Good to know you got shoes to wear when you find the floor." - Robert Hunter
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
Sounds like my plan of action is to just do the rev, call it rev "a", refer it to ECO12345 and move on. Maybe I'll even make mention of the spelling in the ECO... By the way, does anyone have any insight as to whether a rev is alpha or numeric or does it matter?
RE: Another Rev Question... and Notes (general vs. flag vs. revision)
Per ASME Y14.35M-1997 Revision of Engineering Drawings and Associated Documents, section 5.1 Revision Letters states "Upper case letters shall be used in sequence beginning with A and omitting letters I, O, Q, S, X and Z....."
SeasonLee