Linear, Start and Final Overlengths

Start overlength (1)

The first element of profile is lengthened by the defined value. If the value is negative, the profile is shortened.

• In case of open profile, the overlength is the same nature of the first element, linear for a segment and circular for an arc, by respecting the tangency.

• In case of closed profile, the start overlength is tangent to the last element.

→ Consequently, if the profile starts on an arc and ends on a segment, the start overlength is linear, as shown on the example.

Final overlength (2)

Same principle as Start overlength, Final overlength generates the toolpath tangent to the first element.

→ Consequently, if the profile starts on an arc and ends on a segment, the end overlength is circular, as shown on the example.

Contrary to the Start and Final overlengths parameters which extend or shorten the element in tangency, the Linear overlength parameter as the name suggest exclusively extends/shortens the toolpath linearly at the star or end of the profile.

They can be combined with Start and Final Overlengths.