HST re-machining

[NaRbO]

I'm trying to do a rest mill operation in X4 Mu3. The regular surface restmill won't work at all, it gives me a tool path calculation error. The HST toolpath starts calculating but so far it hasn't finished. I've let it go for about 1 hour.

 

I already programmed the first half of the mold with no problems. Didn't take anywhere near an hour for any of the toolpaths.

[cobra95kev]

Did you accidentally set the stepover real small?

Are you using an STL for the leftover stock or tool size or all previous operations?

[NaRbO]

I'm using a 4mm tool chasing a 10 mm tool. stepover is 55% with .004 stepdown. Going a total of .371 depth in the deepest area. Tolerance is set to .0025. I'm just referencing the tool diameter and radius for the rest mill. also I have it set to ignore small cusps with an adjust distance of .005.

[Ocean Lacky™]

Are you sure it's still calculating?

 

try turning on the Multi Threading Manager and watch the progress....

[?Mark]

Your depths (top-bottom) could be wrong and that will cause a very long regen times.

[NaRbO]

I referenced an stl file instead and now it works.

 

I find this happens to me all the time with mastercams restmill. Its never consistent. Sometimes I HAVE to use STL or nothing will happen and other times I HAVE to use tool diameter cause it won't read the STl properly and ends up machining a ton of air.

 

Thanks for the replies everyone

[?Mark]

I use stl files as my stock for this toolpath almost exclusively and I find this toolpath very useful and stable. Avoids tons of air cutting time on some large and complicated surfaces...

[cobra95kev]

I agree with restmill STL is the way to go for consistent results. I hardly ever get a good toolpath when I just tell it to reference all other operations or even one operation. Sometimes the previous tool diameter works well for a waterline restmill.

 

[NaRbO]

I just did another rest mill. This time I used a 3mm tool with a .5mm corner rad. the first tool was a 4mm with a 1mm corner rad. I updated the stl after verifying the 4mm. every radius on the part is accessable to the 4mm tool except for a few sharp corners where i need the .5 mm corner rad and some ribs.

 

So after backplotting the toolpath, i see the 3mm goes almost everywhere the 4mm went and doesn't even touch the ribs at all. I've already tried using the tool diameter and one other operation, no dice.

[3R!< W3NG3R]

there is no stock to leave is there?

[NaRbO]

I have .005 stock to leave on floors and walls.