Dual Dimensioning

[TAK55]

Anyone have any problems with daul dimensioning?

In my drawing the dim's are ".341 in" solidworks gives me "8.65 mm" also dim ".021 in" solidworks gives me .52 mm".


SW2006 SP4.1

Terry

 

[CorBlimeyLimey]

Are you sure the .021" is exact?

.0205" will show as .021" but will be converted to 0.52mm

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Helpful SW websites faq559-520​

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[rfus]

3.406*25.4 = 8.651

3.41 = 8.65

Changes your decimal places if you need increased accuracy to meet your tolerance.

RFUS

 

[rfus]

I meant .3406 and .341

 

[drawoh]

TAK55,

If you are doing a dimensional reference drawing, I have objections to dual dimensioning.

If you are producing a fabrication drawing, I would object strongly. A fabrication drawing shows your vendor or fabrication shop what part you are going to accept. Only one set of dimensions can be correct and official. The other set is for reference, only.

JHG

 

[ctopher]

If you have drawings that are used for assembly or manufacturing here in the USA, but the customer in Europe sees them, they need to be dual dim. (in/mm)

Chris
Systems Analyst, I.S.
SolidWorks 06 4.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 06-21-06)

 

[fcsuper]

I think JHG is right, but necessasities rule, such as in Chris' example. In Chris' example though, the drawing so be clear as to which system is used as the official spec. I normally put mm in brackets and left the tolerancing in inches when I have to make dual dim drawings.

 

[ctopher]

Yes, thanks. I also use brackets [] around mm. That makes mm the secondary dim.
Some companies use parenthesis (), but is wrong, they are for reference.

Chris
Systems Analyst, I.S.
SolidWorks 06 4.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 06-21-06)