Calculating cutter collision avoidance with MasterCam

We are moving from Powermill to MasterCam 2021 and one of the larger gripes I have so far is trying to determine cutter length for sidewall avoidance without going through a lot of hassle. This is for 3D contour toolpaths where you are dealing with tapered/drafted walls where a pocket may be .750 deep but because of the sidewall taper, a smaller diameter cutter may only have to have a flute length of .650.

In Powermill, I would just design my cutters flute length and stick out distance short, calculate the program and them do a collision avoidance. It would then give me the exact length the flute length had to be and the total stick out distance to avoid any crashes.

In MasterCam I am building my tool as usual them running their avoidance and visually seeing what will be cut and what will be hit with that cutter set-up. From there I'm readjusting the flute lengths until things look visually "OK".

Is there a better way you MasterCam guys are going about this? We are building injection molds and cutting with special tapered cutters is not in the game plan. Every .01 of an inch counts when you are grinding back a .0625 or .0312 endmill way further than it should be ground back.

Use the Check Holder function or Edit Projection.

What goooose said^^

Here is a small video showing it in action:
What's New in Mastercam 2019: Check Holder - YouTube

Not even new for 2019, have it in my old ass X6, albeit looks very "souped up" from the older version I have. It's in C-hooks for me under run user app, not sure about the new versions.

Thanks for the link. I like how the Check Holder will adjust your stickout length to avoid holder collisions. I just wish there was something on the same order for adjusting the tool geometry in the same fashion. I think I may have figured out a way to do it by calling my holder the same diameter as my flute diameter and then running Check Holder to see where it interferes but haven't gotten to it to give it a try yet.