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Drawing List of material revision

Drawing List of material revision

Drawing List of material revision

(OP)
Revising the list of material.  Drawing will be Rev B.

Item 9 is a swivel leveling foot.
Engineer wants to replace it with a non-swiveling foot.
This is a new company I am with now.  Very lax drafting standards here.
Should Item 9 be lined through (deleted) on LOM and add new item # for new foot, (rev bubbles added where needed).
Or should Item 9 just be revd and description/part replaced with new foot.

Fit form function... well it is the same size, does the same thing, but it is a different part.

Any opinions?  
Thanks   

RE: Drawing List of material revision

What's the case for deleting and adding a new part number?  What value does it add?

The revision history or change notice should identify "Item 9 was foot co. p/n 12, now p/n 13.

Why tinker with the rest of the drawing needlessly?

RE: Drawing List of material revision

Strikethrough and new item number is the conservative method (many may say overkill).  Practically I think rev-ing the item number would pass muster in most companies.

Either would be vastly superior to the way things get done around here...

RE: Drawing List of material revision

Rev the item.
Call it a day.

Ted

RE: Drawing List of material revision

Back in my govt drawing pack days rule of thumb was that you didn't re-use item numbers.

However, as I mentioned above, a quick look through 14.34&14.35 didn't turn up much to support that - I may just have overlooked it though.

Posting guidelines FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm? (probably not aimed specifically at you)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?

RE: Drawing List of material revision

(OP)
Thanks.  I had also looked through ASME but could not find anything.

I had wanted to just strike through.  The checker said he had never seen it done that way before.

I can see a case for both methods.

Thanks  

RE: Drawing List of material revision

tacodog55,

   What CAD software are you using?

   When I first hacked with SolidWorks 2001, I determined that the strike-through capability of their bill of material software was not reliable.  I made a point of not using it.  Admittedly, SolidWorks has had lots of time to fix this bug.

   Another issue with SolidWorks, and I am sure, lots of other stuff, is what happens after you delete the bill of material, or the view controlling the bill of material?  There goes your strike-through.  If my drawing view does not work, I delete it and start again.  This is easy, and I wind up with a good, readable assembly drawing.

   We are using SolidWorks' Excel BOM.  Sometimes, this becomes corrupt, and there is no choice but to delete it and insert a new one.

   Take the case that you have implemented strike-through on your BOM, and you have a requirement to copy and paste the BOM to some other application.  In an Excel BOM, strike-through is implemented by fonts.  This will not work in a text only application like Notepad, or a database.

   There are a lot of good reasons to use strike-through on an old-fashioned, hand lettered BOM.  I would be very cautious about using it on a computer.

               JHG

RE: Drawing List of material revision

I agree with drawoh's point about CAD systems, a strikout method is unreliable at best with automaticaly created BOM's in Solidworks and Pro/E. It is probably the same in other software packages.

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net

RE: Drawing List of material revision

(OP)
We are STILL using IDEAS.  No strike through capabilites.  Just draw a line.

RE: Drawing List of material revision

Quote (tacodog55):


We are STILL using IDEAS.  No strike through capabilites.  Just draw a line.

   Meaning that your strike-through is completely unintelligent?

   One of the objectives of a 3D CAD system is type-once-use-everywhere.  The stuff that is not required on requisitions or in MRP, either should not be there or it should be ignored.  

   What happens when your in-house CAD monkeys check out your drawing with the line through the BOM item, and start changing stuff?

               JHG

RE: Drawing List of material revision

(OP)

Quote:

Meaning that your strike-through is completely unintelligent?
Yes.

The model and LOM are not connected.  LOM is not generated.  It is hand typed in.

 

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