Most manufactures use a 0.1" bit to route the board edge
So minimum radius is 1.27mm as they will not attempt to make a 90deg inside edge.
1: define origin by mouse pointer, select the 90deg corner point.
2: insert two new board points at 1.27mm and 1.27mm
3: change the corner point as arc and move it to ±0.372mm and ±0.372mm
4: or move origin to one of the inserted points
5: move arc point to ±0.898 and ±0.372
Here are the arc position to make the radius so you board will look like what you get back.
perfect inside corner
Re: perfect inside corner
I think to arc corner would be 0.898mm and 0.628mm.
Re: perfect inside corner
I had the issue of the Raspberry PI HAT compliant radius on the corners and slots, I used TurboCAD to draw the board to HAT spec's in about 2 minutes then saved as DXF. I can fudge a simple rectangle without going too crazy but using X & Y entry reminds me of AutoCAD in the old days.
Nice piece of work on the Arcs
Nice piece of work on the Arcs