Hi Felix,

> I don't know if you can draw an arc (in Moi) from it's center, radius and angle but
> if it's possible it could simplify things a little.

I think the Arc center command will work for that.

First you'll place the center point.

Then the second prompt is to pick the starting point of the arc - in this case you want it to be a specified distance away from the first point you picked so you can use "distance constraint" to control that. Just type in your desired radius value and push enter and now your second point pick will be constrained to be that distance away from the base point. That's the same method that you can use to draw lines of a particular length as well.

Then you'll need to place the point where you want the arc to start and you can then enter the desired angle at the last prompt.

- Michael