Understanding Arc Filter Tolerances

Learn how Arc Filter settings affect the amount of NC code that's generated, how to visualize the differences, and how most modern machine tool controls are more than capable of keeping up.
Download this part file to follow along in standalone Mastercam, sign into my.mastercam.com and follow this link community.mastercam.com/TechE...

[@cncmanufacturingptyltd5189]

So are you saying to get a better surface finish, turn filtering off? What about smoothing?

[@mastercam]

For a better surface finish use a tighter cut tolerance. Tighter the better. If you want to use the arc filter, we tend to use a 1 to 3 ration. If you use the arc filter for finishing, make sure you use the “tighten line filtering tolerance” If you don’t want to use the arc filter then you can go into the smooth settings and “Present arcs as line segments”

[@torontotooling1594]

explain difference when multiple surfaces involved with sharp edges (what would be best value )

[@mastercam]

We need some more details regarding your project. Please feel free to reach out to your local Reseller or our technical support group for more in-depth assistance www.mastercam.com/support/technical-support/

[@orioltr8387]

This filters affect to G187 code?

[@mastercam]

In the default Haas Posts, the filter and tolerance will not directly affect the G187 output in the code. In some instances, it is desirable to have a G187 code output that does not directly correspond to the tolerance entered for the toolpath. You will still need to enter your desired G187 settings. If you would like this to occur it is entirely possible to do with a proper post-modification. Talk to your Mastercam Reseller or post developer to see if they can offer you this change. www.mastercam.com/support/technical-support/

[@highvoltagefeathers]

Zero RPM? You mean zero SFM?

[@highvoltagefeathers]

@@mastercam The entire tool is rotating at the same RPM, rotational velocity doesn't change based on radius. Surface speed decreases to zero at zero radius at the ball tip. It is surface speed that allows a cutting tool to remove material, cutter rotational velocity is just a knob for controling surface speed.

[@dominikkmieciu]

Try to make a more complex program with larger ranges of axis motion.

[@cncmanufacturingptyltd5189]

so your recommendation is no filtering, no smoothing for surface machining on the UMC 750 SS?

[@kaleblawrence976]

you all prolly dont care at all but does anyone know of a trick to get back into an instagram account? I was stupid lost the password. I would love any tips you can offer me!

[@drewsam6387]

@Kaleb Lawrence Instablaster =)

[@kaleblawrence976]

@Drew Sam i really appreciate your reply. I got to the site on google and im in the hacking process now. Takes quite some time so I will reply here later when my account password hopefully is recovered.

[@kaleblawrence976]

@Drew Sam It did the trick and I actually got access to my account again. I'm so happy! Thanks so much you saved my account!