Mcam creating many chains

[Mooser]

Hello group
I've got a small outline that we are engraving (contouring with no cutter comp), it consists of 72 chains. The problem is when we scale it down (40% about 2x3 inches) and rotate it 90 deg mastercam turns those 72 chains into around 10000 chains!. I've tried several analyse and joins and it just screws up the lines. When previewing it keeps treating each chain as separate and raising the cutter up at the end of each little tiny chain.
Any ideas how to avoid or fix?
Thanks
Mooser

[robert copeland]

sounds like you have overlapping lines go in setting , run user app. and use find overlapping , this could fix your problem

[Mooser]

Originally Posted by robert copeland sounds like you have overlapping lines go in setting , run user app. and use find overlapping , this could fix your problem

Thanks for the quick reply
It says there are no overlapping entities.

When I start to select the contour path and go to select by chain, each chain is only about .005" long and although they seem to touch the next part of the line, they must be disconnected. I select by box and it grabs everything but treats each little bit as a separate path.

I've redrawn and it's ok but I'd like to know why this happens and how to fix/prevent it
Thanks again
Mooser

[robert copeland]

try some of the other chooks under user run app.

[Superman]

What linetypes were the entities before scaling and rotating ?
Sounds as if they were splines

Are you scaling each axis independantly, ie circles would become elipses ( which are a type of spline ) ?

Check the linetypes created at each stage, to understand what is occuring
( understanding what happens would dictate how to address and find a solution )

Also
Investigate the use of "Simplify" in the "Edit" pull-down
- creates arcs from "Auto-segmented" lines at a maximum deviation.

Also, open your chaining tolerance to allow better chaining

Use the "Filter" option in the toolpath op. to shorten the NC code

[foxsquirrel]

can you post a file, it easier to troubleshoot that way.

[Mooser]

Trying to reproduce the error so see where it actually happens, weird thing is it seems to more, sometimes on the scale, sometimes on the rotate (mostly scale) and now I'm playing with these "chooks" and got sidetracked seeing what all they do... I'll post a pre and post file
Thanks
Mooser