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support controlling ratios of sketch dimensions/measures

long ago i got used to being able to control the ratios of two dimensions in a sketch. #d1 = 1.3 * #d2
or whatever it was back in pro/e. it would be great to be able to do that in onshape.
i have looked at other discussions on the topic and agree that in various cases it is quite a good option to pre-calculate dimensions in variables in the feature tree. this is not the case when you know only the ratio you want but the actual dimension values are going to be controlled indirectly via other sketch constraints and dimensions. this is a common need when using sketches for skeleton layouts where you need to enforce, for example, the ratios of mechanism elements while retaining other non-trivial constraints that affect the exact values of the dimensions.
thanks for your consideration.
cheers,
-kyle
Comments
The important thing to understand is that you can create new variables on the fly while in sketcher, and you can modify their values from the side bar while in the sketcher or whenever. This ends up being more powerful, but you do need to come up with variable names, and each dimension doesn't automatically get a locally scoped d1, d2, d3… name.