Spacing and rotations

Spacing

Between two parts, the cut needs room: the flame has a width (the kerf), and your parts a tolerance margin (the safety). NestorCut’s rule is written under the field:

Spacing between parts = 2 × kerf + safety

The drawing: two parts, each with its own cut path, the kerf outside the contour, the safety between them

Why twice the kerf: each part is cut on its OWN path — the compensated torch passes outside the contour, and the whole kerf is eaten OUT of the part. Two parts face to face: two whole kerfs, plus the safety between them. A dropped .job pre-fills everything: kerf read from the tool, spacing computed.

Spacing finer than 0.05 mm triggers a warning — finer than a laser kerf, parts may touch or micro-overlap at cutting. And more spacing means fewer parts in holes: beyond 2.4 mm, nesting inside holes disables itself (an engine limit, said on screen).

The Spacing field and its rule, on screen

Rotations

The angle step tells the engine by how much it may turn the parts: 90° for rectangular parts, 180° when upside down does not matter, a finer step (45°, 30°…) to save more material on free shapes — at the price of a longer search. “No rotation” keeps everything at 0°: the choice for engraved text and oriented grain.