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Drawing Interpretation Question

ajlee7
We're having a bit of an issue discerning what exactly the draft callout on this rib is supposed to mean. You guys probably look at more drawings that anyone else who works with me so I figured I might get your take on it.

The way I'm reading it, those rib don't necessarily have to have a draft to them (+0 callout) but CAN have up to a -30 degree draft SO LONG as the minimum thickness does not go below 0.12 inches.
If this is the case, then the parts are out because the min is more like 0.06 inches.

But, maybe they mean just the base has a 0.12 min and then can get thinner as the draft tapers it down?

On the CAD model our company has, the ribs have no draft whatsoever, and a thickness of 0.12 inches.
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  • It is 30' so half a degree. The drawing is a digital copy they sent me and it's out of focus as well.

    The only thing I'm concerned about is the order that the dimension is listed in. Since the min is listed first and then the draft angle second, does that mean as long as the root of the rib is in spec it's fine?
    Or would the min thickness still apply after the draft is taken into account?

    The design engineer is saying that the min should apply at all times even after the draft, but I'm not so sure that's what's being conveyed to the manufacturer.
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  • It is 30' so half a degree. The drawing is a digital copy they sent me and it's out of focus as well.

    The only thing I'm concerned about is the order that the dimension is listed in. Since the min is listed first and then the draft angle second, does that mean as long as the root of the rib is in spec it's fine?
    Or would the min thickness still apply after the draft is taken into account?

    The design engineer is saying that the min should apply at all times even after the draft, but I'm not so sure that's what's being conveyed to the manufacturer.
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