I am hoping that someone can steer me in the right direction on this problem, that I'm having

I am running version 25 of BobCad

I have a 4 sided figure which I use a indexing system to rough out the four sides. These four sides of indexing are pretty simple and no problems

I then proceed to a 4th axis rotary finish cut. This is where the trouble is causing me a headache.

I have a 2mm diameter ball end mill with a flute length of 3mm, overall length of 50mm and a protrusion length of 20mm

With these tool dimensions, I would have assumed BobCad, would have diverted away from areas that didn't allow further cutting with the above tool.

When I start the simulation, I get a lot of red colour which illustrates the tool fouling. I can see it in the simulation.

So my question is, why does the program allow this ?

I cannot put the whole BobCad file up here as it is too big, but I have posted a screen shot of the red colour.

Any help would be appreciated

Kel

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