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Measurement and Dimensioning Different
felix_feil
Member Posts: 7 ✭
Hello, I have a problem. In my drawing, I entered the dimensions as 59 mm. However, in the extruded model, I only see 58.931 mm. Why is that?
See images attatched.
Link to model:
https://cad.onshape.com/documents/eb708340c87658a970869c0f/w/eaba8cb867be91da5a404a1f/e/8ba02576f16200dd70f63d75?renderMode=0&uiState=67ebe5edd8545a6e1c84ecc4
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Comments
Please share a link to your document with copy access and we'll check it out.
Like MD mentioned, it's not measuring from the same spots. If it were a square this would probably be different. Place a mid point on the arc's and then measure from those.
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If you want the dimension in your sketch dimension to read mid points of the arc and not max distance you will need to add a construction line constrained to the mid points of the arcs like I've shown here.
https://cad.onshape.com/documents/eb708340c87658a970869c0f/w/eaba8cb867be91da5a404a1f/e/8ba02576f16200dd70f63d75?renderMode=0&uiState=67ebe5edd8545a6e1c84ecc4
Added in question
Thank you very much! This fixed my problem :)
What was the distance I dimensioned before? The midpoints of the arc are the max distance apart at two opposing arcs or not?
No they are not. unless they are at 45° from each other
See how the 15mm dimension extension line overlaps the arc?
Thanks for your help!