Making an Onshape FeatureScript for generating Vex metal, I noticed that the 1x5x1 Steel C-Channel has slightly different dimensions than all other C-Channels that I measured in CAD.
All these models were downloaded directly from the Vex website below the product listing.
The “Parallel Dist” measurement is the measurement in question:
Identical measurements of 1x2x1 Steel C-Channel are different due to the steel's thickness. However the two measurements are equal between both sides.
Identical measurements of a 1x5x1 Steel C-Channel are different due to metal thickness, but are also different between two sides.
Therefore, the holes on 1x5x1 steel C-Channel are 0.01" off from what’s expected based on the other C-Channels’ measurements.
Is this an intended difference or an error in the models provided?