1x5x1 Steel C-Channels Asymmetrical Dimensions

VEX V5 General Discussion Technical Discussion
1

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:

The measurements of a 1x5x1 Aluminum C-Channel which are equal

Left Side

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image784×641 103 KB

Right Side
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image791×657 90.9 KB

Identical measurements of 1x2x1 Aluminum C-Channel are also equal

Left Side

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image895×656 111 KB

Right Side
image
image873×741 87.1 KB

Identical measurements of 1x2x1 Steel C-Channel are different due to the steel's thickness. However the two measurements are equal between both sides.

Left Side

image
image960×614 88.7 KB

Right Side
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image978×696 89 KB

Identical measurements of a 1x5x1 Steel C-Channel are different due to metal thickness, but are also different between two sides.

Left Side

image
image1147×667 144 KB

Right Side
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image1074×607 141 KB

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?

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This is indeed an error in the VEX supplied CAD model. This was manually fixed for the Fusion library and I maybe for the Inventor library as well.

You should join the VEX CAD Discord server if you haven’t already.

4 Likes
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I fixed it for Inventor. We will make a full set fix for V1.4. We didn’t realize this was an issue until earlier this week. 1.4 should be coming soon.
Steel_C_1x5x1x35.ipt (2.3 MB)

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