STEP 2: MIRRORING (with 2 methods)

1 A. By entering data: MIRROR: select rim
to 1st point enter "@(radius)<180"
to 2nd point enter "@(radius)<270", delete old: "N"

1 B. By clicking objects: MIRROR: select rim
1st point: select midline on 1
2nd point: select 1 again; delete ols: "N"

2. Complete upper left line (use F8 then grips to join to rim and midline). Show grips by clicking on objects; then join lines by dragging an red active grip (hover over it) and overlapping to another grip.

3. TRIM overshot upper/mid lines

4. Check joints (w/grips) in circled area;
it is essential for hatching that these lines fit.

Continue to step 3