VersaFrame 90 Degree Gusset hole = 0.495" from edge?

Anyone know why the VersaFrame 90 Degree Gusset (217-3548) is off by 0.005"?

It’s good to undersize gussets by a small amount to avoid interference with other potential gussets or structural members.

It’s a feature not a bug.

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…but the T gusset isn’t? VersaFrame T Gusset (217-3547)

…if they’re undersizing the gusset, shouldn’t it be 0.99" wide instead of 1"?

Hmm, yeah, that drawing doesn’t make sense to me.

I wonder if they actually are undersized, and the dimension reflects that, but for some reason they decided to make the drawing at 1". Sometimes release drawings+CAD files intentionally simplify/remove tolerance information like that.

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1" and 0.99" are the same dimension on 0.1" tolerance drawings, which is generally what VEX sticks to on their customer facing drawing releases.

EDIT: Whoever ran that specific gusset drawing put way more zeroes on their work than my experience of normal VEX policy.

Where does it say 0.1" tolerance?

It doesn’t, I think you’re right that the specific drawing is wrong/makes-no-sense. I’m pointing out that normally Vex only dimensions customer facing drawings to 0.1", edit was to try to recognize that.

I bet if you put a caliper on a real life VEX gusset you’ll find it at 0.990"

Edit: I’m apparently hella wrong :flushed: Sorry Jon & VEX team!

:man_shrugging: This is weird… The model has been updated and should be live on the site in a few minutes.

Do you have some examples of this? I spent a few minutes poking around the site and didn’t find any customer facing drawings that had fewer than 3 decimal places of accuracy for imperial dimensions.

There’s no reason we would/should reduce the accuracy on a drawing other than to create pain and confusion for customers (which is not a goal of ours). The purpose of those drawings is to give customers the ability to quickly reference dimensions. There’s no block tolerance on the customer facing drawings, so the accuracy of a dimension on those drawings isn’t explicitly linked to a tolerance.

I wouldn’t be surprised if there were some drawings with fewer than 3 decimal places of accuracy, and we can get those updated, but I’m not finding them.

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As you noted, these customer facing drawings do not generally show the dimension tolerances. I would expect that your internal drawings do have those tolerances (or may include a standard tolerance note that does not show up on the customer facing drawings).

Standard ASME Y14.5 drawing tolerances are:

  • X.XX +/- 0.03
  • X.XXX +/- 0.010

So, as a customer, based on the 3 decimal place presentation of these dimension, and without any note to the contrary, I would interpret these drawing dimensions to be +/- 0.010". Depending on how these parts are made, that may in fact be the correct interpretation of these drawings. However, if the parts or features of these parts are made with a process that is holding +/- 0.03" tolerance rather than 0.010", you may want to consider changing your dimensioning scheme to X.XX for those features rather than X.XXX so as to not imply a higher tolerance.

By the way, I did not look to see if you have published a drawing standard somewhere on your site that would over-ride the ASME standard interpretation. If you did, you may want to reference that somewhere on the face of the customer facing drawings for reference.

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