AutoCAD express tools, modify flatten objects

[Anonymous]

Using the express tool "modify, flatten objects" is there a setting for the accuracy  to which the resultant arcs match the source spline? I am handling drawings for the creation of tool paths for a Flow waterjet machine and I have seen the resultant arcs differ from the original spline curves by a substantial amount (up to .15in) and often have to hand overtrace the splines.  Also can I set it to substitute lines for arcs if they are too flat. I am working with a CAM software that doesn't always convert splines well and has a bad time creating workable tool paths if the arcs are more than about 1000in radius.

[Patchy]

Have you tried SPLINEDIT command and convert to Pline with precision?

or using autolisp from CADALYST 12/03 AutoLISP Solutions SPLINE-TO-PLINE.LSP ?

[Anonymous]

This method doesn't work for me as it converts the spline into many small lines as opposed to arcs which are required, but thanks for the answer.