CAD import reference

Controls

Detail: Resolution of conversion is defined by three values, Maximum surface deviation, Angle tolerance, and Maximum edge length.

Parameter	Description	Unit	Range	Example
Maximum surface deviation	This parameter specifies the maximum allowable distance between generated mesh triangles and the model geometry. Tip: If you have two rounded bevel edges meet at a corner, setting this to a smaller value will ensure that the corner is properly rounded, too.	Millimeters	0.05-20 mm	This is the same location of several beveled edges meeting, one with 1 mm, the other with 0.05 mm maximum surface deviation.
Angle tolerance	This parameter specifies the maximum change in the surface normal between adjacent nodes in the mesh. This applies along the EDGES and between the grid lines. Effectively, the lower this number, the finer the resolution of imported curves and roundings.	Degrees	0.1-40°	This is the same corner, one with 40 °, the other with 5 ° angle tolerance, imported with an otherwise rather high maximum surface deviation.
Maximum edge length	This sets the greatest length of any generated triangle's edge.	Millimeters	0.2-40 mm

Parameter

Description

Unit

Range

Example

Maximum surface deviation

This parameter specifies the maximum allowable distance between generated mesh triangles and the model geometry.

Tip: If you have two rounded bevel edges meet at a corner, setting this to a smaller value will ensure that the corner is properly rounded, too.

Millimeters

0.05-20 mm

This is the same location of several beveled edges meeting, one with 1 mm, the other with 0.05 mm maximum surface deviation.

Angle tolerance

This parameter specifies the maximum change in the surface normal between adjacent nodes in the mesh. This applies along the EDGES and between the grid lines.

Effectively, the lower this number, the finer the resolution of imported curves and roundings.

Degrees

0.1-40°

This is the same corner, one with 40 °, the other with 5 ° angle tolerance, imported with an otherwise rather high maximum surface deviation.

Maximum edge length

This sets the greatest length of any generated triangle's edge.

Millimeters

0.2-40 mm

These values can be specified either manually (Controlled precision) or through a selection of presets. These presets are:

Preset	Maximum surface deviation	Angle tolerance	Maximum edge length
Extra low	10 mm	15°	100 mm
Low	5 mm	10°	40 mm
Medium	2 mm	8°	20 mm
High	0.5 mm	5°	10 mm
Extra high	0.2 mm	2°	2 mm