false1 posted at 12:06PM Fri, 20 November 2015 - #4239780

Thanks for your help. I removed doubles and it deleted 32 vertices. I don't know where the threshold setting is though. i'd already removed the mirror modifier but not the sub surface modifier.

When you click on "remove doubles" in the Specials menu, the Merge Distance will appear in the Operator Panel, at the left side of the screen, under the Tools tab menu. The Merge Distance is the same as threshold. I'm just used to certain terminology carried over from other packages, etc. Adjusting this value will increase or decrease the distance that is used to average weld the vertices of the object together. Too high, you will lose the profile shape of the object. Too low, you may not weld all the necessary points. Most often, the default setting is the best one to use, but in some cases, it needs to be adjusted slightly.

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