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Tasklist

FS#260 - Reference dimensioning

Attached to Project: QCAD
Opened by Andrew (andrew) - Wednesday, 14 September 2011, 13:31 GMT+2
Last edited by Andrew (andrew) - Tuesday, 09 February 2016, 14:52 GMT+2
Task Type Feature Request
Category QCAD (main)
Status Likely to be implemented
Assigned To Andrew (andrew)
Operating System All
Severity Medium
Priority Normal
Reported Version 3 Beta
Due in Version Undecided
Due Date Undecided
Percent Complete 0%
Votes 8
Private No

Details

Reference dimensioning (baseline dimensioning)

Create multiple dimensions using the same base line.

This task depends upon

Comment by Guy (Papy Octet) - Wednesday, 12 February 2014, 18:07 GMT+2

What does that mean ?

Comment by Mathieu (Tuttle) - Thursday, 11 June 2015, 21:57 GMT+2

I don't understand too...

Comment by Michael Gilligan (MichaelG.) - Sunday, 13 December 2015, 16:00 GMT+2

To answer the two previous comments:

In "baseline dimensioning" a set of dimensions are all calculated/stated as distances from a single origin, instead of from each-other.
This can be a useful way of avoiding "tolerance build-up" ... Think of a row of holes, supposedly 20mm apart; and compare the accuracy of positioning with a tolerance of [say] +/- 0.5mm ... The tenth hole could be out-of-position by 5mm if they are dimensioned from each other, but only by 0.5mm if individually dimensioned from a common baseline.

Hope that helps
MichaelG.

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