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Hi @steve_shubin

thank you for sharing that document and your solution.

In my sketch, there were no constraints between those two points marked by your red arrow and the 35mm construction circle. However, assuming you meant that I should remove the 2 points that the red arrows were pointing to, I did that and still got the same error. I'll post the screenshots in my next message.

I do appreciate you looking into this issue I am having, however, that is not the point of my post. @andrew_kleinert described it well in his now missing post above. These errors keep happening and it's difficult to figure out if it's me or if it's OnShape. The lack of feedback about errors makes troubleshooting them time consuming because you aren't given any clues to narrow down your search for a solution. You then face the decision of either starting again (often quicker than troubleshooting) or starting again and spending even more time to write a bug report.

You know the saying that one should learn from their mistakes? That isn't possible with these types of errors. Not in a practical sense anyway.

Without access to your document, I am GUESSING this MIGHT be where the problem is.

But it is a big guess at this point. Looks like things might possibly be fighting with each other at each of these points.

I believe there are points coincident to the 35mm diameter construction circle where the red arrows are pointing to that should be removed and this would possibly free up the problem you are having.

Notice that in my sketch at the link above, I did not have any such coincident points, and as such, this is why I was able to make the 4 chamfers at the same time.

Any constraints where the RED ARROWS are pointing to in the post/picture above should be removed.

If you want to make that 35mm construction circle coincident to the vertical line, the constraint should be placed where the GREEN ARROW is pointing to below.