How can I get rid of collisions and gouges

[The model shop Inc.]

I have a 3d surface tool path, after I run collision check, there are lots of gouges found,

how can I get rid of them?

 

Thanks!

[DGreeves]

Are you making sure your boundries and check surfaces are set right.

[Gary]

Tell it stop just before it hits those spots.

[Guest]

If the areas being gouged are check surfaces try telling it to stay away from those surface by some amount.

[Slick]

Are the surfaces/faces a converted entity? i.e. Brought in from IGES or Catia?

If so, I have notice that MasterCAM tends to react better to surfaces generated in MasterCAM, you may need to re-create these surfaces in MasterCAM.

 

Also, believe it or not, I have seen the Check Surface function actually work against you. If you have it on, and you can, try turning it off and see if you don't get the gouges.

[The model shop Inc.]

This is a topographic surface, I use foam as the material to cut then fiberglass it, this surface

contaions hundres of thousands of small surfaces, I select all surfaces as drive and didn't select any surface as check, I don't think

I can stop it at those spots, most of these are occuring in the valley.

 

All of the gouges are smaller than my filter tolerance.

 

Is there any limit regarding the gouges?

[The model shop Inc.]

Slik:

 

I use STL file.

[Grant Moiler]

one thing i found with X is it sets the retract move to incremental by default, i found if i use it with "order cuts by minimum distance" it gouges, try "absolute" if your using retract

[Müřlıń®]

When running collision check, often one will get these small gouge points.

 

However, most of the time they are so small they cannot be seen on the finished part.

 

The trick to knowing when collision check is reporting a noticable gouge, is in the report.

 

keep your eye on the volume colum and hold down the arrow key to cycle through them.

 

As long as you are seeing volumes of .000X/.0000X

no worries.....

 

I would think that given what you are doing, .001 wouldnt even be a problem....

 

set the slider to low and you will only see the bad ones...

[Slick]

If you are dealing with a ton of "patched" surfaces you should really consider trying to make larger, possibly even one surface. Loft is a good one, or coons. I know on version X there is a new create surface finction like Coons, but not Coons.

What could be happenning is the high quantity of surfaces aren't "trimmed" perfectly, so the cutter wants to roll in the gaps/imperfections.

 

But it also sounds like Murlin's got things figured out, good call on the tolerance

[Micromoldmaker]

This may be a little off: check to see if you have other surfaces underneath the ones you're cutting. I've had the experience that when there are surface gaps, MC actually wants to cut what's below those gaps. This has come up when I worked with surfaces made in another system and when there was a hefty quantity of them.

[Mike Mattera - TFM]

Mastercam should ignore any surfaces underneath, Unless there some surface "holes". But that might make more than a gouge. It might try to crash.

 

I would check the tolerances. Total Tolerance of .0009 with a 2:1 and One Way.

 

Mike Mattera