Unexpected Moves

[PBpaul]

I'm still new at this but have created some surfaces and have created rough-out and finish operations for them. A typical area would be 2-3 inches across and 4-5 inches long. I'm roughing about 3/4 of an inch deep with a .625 dia. flat end cutter, leaving a little, and then finishing up with a .25 dia ball end cutter. We're working in wood with Mill9sp1. My rough and finish operations Backplot and Verify fine, but when I post them and actually cut the surfaces on our router, out of nowhere, I get big (5 to 6 inch) unexpected moves that would obviously crach the cutter into something were it not for me standing there and aborting the run.

I suspect that this is POST related and that our dealer will get to the bottom of it. Am I wrong to expect Backplot and Verify to be accurate?

[Jack Mitchell]

Paul,

 

Bet your life on it, verify will show all of your crashes - even multiples.

 

Regards, Jack

[GREG]

Make sure all ops have same NCI destination.

We have come across similar crashs that dont show in verify and its because an op within a group hasnt been posted because the NCI file has a differant name.

[PBpaul]

Thanks- I'll keep trying.

[jdempsey]

If you filter then your verify and backplot may show a good tool path and the machine control will give you a bad path with several crashes. Some controls dont like the create arcs option when you filter a file. We have that problem with the fadal control. So if you are getting arc moves that are not suppose to be there or are too big then check your settings for your size of arcs or if you filtered the file try turning off the create arcs.

[Scott Bond]

Hi all

Your router post may be having problems with large arcs. Do you have a dealer near you? They usually have a postman on staff.

[Allan]

jdempsey the fadal has a limit of 399 inch arc radius. (I found out the hard way) You can add maxrad : 399 to the post to get away from the problem.

 

Allan

[jdempsey]

why does the maximum arc radius in the filter settings not keep the radius small enough to work on the fadal?

[PBpaul]

Thanks all- seems there was something funky in my post. The dealer fixed it and we're back to making sawdust.