Interactive Klartext course · Lesson 6 / 15

Corner rounding with RND and chamfers with CHF

Replace sharp contour corners with a programmed radius or a straight chamfer while keeping the surrounding path connected.

Start this interactive lesson See the example

What you will learn

Insert RND between contour blocks and set its rounding radius.
Insert CHF between two straight lines and set the chamfer side length.
Leave enough adjacent contour length for the requested transition.

How it works

RND creates a circular transition tangent to the contour elements before and after it. CHF trims two straight lines and connects them with a straight chamfer.

Both functions depend on neighbouring contour geometry. TNC Sim validates the transition and displays the resulting toolpath before machining.

Klartext example

Try the essential blocks

This compact example introduces the lesson topic. Use the guided practice for the complete checked exercise.

L X+50 Y+0
RND R10
L X+50 Y+50
CHF 8
L X+0 Y+50

Ready to practice?

Write the blocks and check the 3D result

Open lesson 6 in TNC Sim