TheSwamp
CAD Forums => CAD General => Topic started by: sailfl on May 03, 2010, 05:15:37 PM
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I have a drawing that was drawn in metric I need to conver it to inches.
Please tell me how to do that.
Thanks
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Short answer: Scale all by 25.4 or change your dimension scale to reflect inch measurements of a metric model, by scaling primary units by 25.4 or adding alternate units with a 25.4 scale. Whichever fits the situation better.
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James,
I understand what you told me but my problem is that I don't use AC 2006 that much and I usually don't have to change drawings. But I need to be able to do this more often, so I need some directions.
Thanks
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James,
I understand what you told me but my problem is that I don't use AC 2006 that much and I usually don't have to change drawings. But I need to be able to do this more often, so I need some directions.
Thanks
Select all objects:
SCALE
<pick base point of reference to scale objects about>
25.4 (scale factor)
Done.
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*blink*
To go from metric (mm) to imperial (inches) wouldn't you scale by the inverse of 25.4, or 0.03937007874015748?
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*blink*
To go from metric (mm) to imperial (inches) wouldn't you scale by the inverse of 25.4, or 0.03937007874015748?
*facepalm*
Yes. I was all flip flopped on my direction of scaling, there.
Or as I do it, scale by 10/254
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Thanks. I read and then re-read the original question about half a dozen times because I thought I must be misinterpreting it to want to use the inverse.
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I have decided that there must be some thing else set because I am not getting what I want. Because I can not share the file as is but I can delete some things and share a small part, I have another problem I need help with.
I can not look at the complete file. I move toward the bottom of the file and I can not continue.
How do I see the comlete drawing?
Once I can look at the complete drawing, I will modify and post a copy of the drawing with a part.
Thanks
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when you come to the limit of what you can see, hit "regen" and then continue panning around.
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Thanks for the Regen. That works great.
Here is the drawing with a few items left.
Thanks for you help.
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If you need it in INCHES then:
SCALE entire drawing by 10/254
Turn off SNAP (F9)
Using the dialog reached via the UNITS command, change your units from decimal to fractional, with a precision more suiting to your needs, like 1/32 or 1/16 or whatever.
The dimensions will be huge, but you that may not be a problem, depending on your purpose.
Are you just trying to take measurements from this drawing? Are you trying to use the geometry for CNC programming, or what?
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James,
I need the drawing in a 1:1 format in inches so I can cut it on my CNC machine.
Thanks
Nils
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*blink*
To go from metric (mm) to imperial (inches) wouldn't you scale by the inverse of 25.4, or 0.03937007874015748?
*facepalm*
Yes. I was all flip flopped on my direction of scaling, there.
Or as I do it, scale by 10/254
Slick!
Got to try to remember that one if and when I ever get a metric drawing.
-
*blink*
To go from metric (mm) to imperial (inches) wouldn't you scale by the inverse of 25.4, or 0.03937007874015748?
*facepalm*
Yes. I was all flip flopped on my direction of scaling, there.
Or as I do it, scale by 10/254
Slick!
Got to try to remember that one if and when I ever get a metric drawing.
Yea, I only learned that a few months ago :P I was always whipping out the calculator and dividing 1/25.4 (since you can't do a decimal in a fraction in Autocad) and an engineer saw me doing that one day and gave me that tip. Brilliant! That works in a -lot- of situations, actually, I've found.
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For the uninitiated -- you can supply appropriate lisp statements to most command prompts -- for example, when prompted for scale you can simply enter (/ 1 25.4).
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*blink*
To go from metric (mm) to imperial (inches) wouldn't you scale by the inverse of 25.4, or 0.03937007874015748?
*facepalm*
Yes. I was all flip flopped on my direction of scaling, there.
Or as I do it, scale by 10/254
Slick!
Got to try to remember that one if and when I ever get a metric drawing.
Yea, I only learned that a few months ago :P I was always whipping out the calculator and dividing 1/25.4 (since you can't do a decimal in a fraction in Autocad) and an engineer saw me doing that one day and gave me that tip. Brilliant! That works in a -lot- of situations, actually, I've found.
I've been working like that for many years, especially when trying to work out viewport scales when we're doing civils drawings as they work in meters
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Ive had a few before and just changed the INSUNITS (UNITS) var to Inches (if working on a metric drg or vice versa) thus leaving the original drawing intact.......
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I find it easier to copy all w/ a base point and paste it in a new inches drawing at 0,0,0, then scale all. If you dont you should change the measurement, insunits and the other 2 insunit setvars to reflect inches, otherwise inserted blocks go crazy and hatch is wrong. Also you need the new dim styles
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be much better to convert all the inches dwgs to metric!
Not helpful, I know. Sorry