Thank you!

Thanks Aaron!

Thanks James, Looks like an interesting read.

Collin, What is this book, "Foundations of Manufacturing" that you are speaking of?

Someone at CNC told me once a while back that it was not designed to have defaults but once you use it, it retains the values and then repeats the selections from the last session.

I was also taught 60/40/40. If I remember correctly...60 percent allowed cutter comp to initiate and the 40/40 was to allow minimal sidewall clearance with a gradual or minimal attack angle. You would never have to worry about material engagement or gouging. For the type of work we do, this has work well enough to be my default settings.

Back in July we were having issues with Nethasp and Mastercam dropping our license. I am not sure what was done but I think it was updated then. I'll have to check and get back to you.

The MachSims(2) were built by me and then I had some recent post work done for one of the machines. At that time the MachSim's were checked and confirmed good. The posts are binned. I did not set the update to install. For the longest time the update showed available. Then after about 2 months(???) it showed that it was downloaded and ready to install. A day later I went to lunch and came back to find it being installed on my computer. No one knows why or how the install started. Any way I was hopeful that things would go well and everything did until I opened an older MC2018 file that I was going to convert to MC2021. When I opened MachSim to verify toolpaths, all hell broke loose. I was having freezing issues and then nothing in MachSim would work. It gave an error message that didn't make any sense to me so I call MLC to have a look. That is when we deleted the mwMachSim.ini. I was able to get Mastercam to open and then was able to open a file, but then Mastercam became a brick. Nothing was working. So we uninstalled all of the updates and reverted back a day. Something else that happened prior to the update was that AVG was somehow installed on my PC. It was a flag and I called IT. They couldn't tell me how it was installed. (We already have a product that we were using.) They told me to just uninstall it. When the update was installed, I was using the other parts of the system like Word and Excel, I noticed the system was very smooth and responsive. Everything just seem to work better. That is until I opened MachSim.

I can confirm the issue. Mastercam Mill 2021 update 1 Launching Machine Sim from "Machine Simulation" options panel Mastercam will crash when Machine Simulation is closed After crash, Machine Simulation will not run (crashes on launch) until mwMachSim.ini is deleted. We submitted this to MLC-CAD and they were able to duplicate the issue and they in turn submitted the issue to CNC Software who is currently working to find a resolution. W also found an issue with the corner radius on an endmill showing collisions in MachSim even when the tool is not touching any surfaces. If you remove the corner radius, the issue goes away. This was also submitted to CNC Software.

Sorry for got this: And this almost works no matter what the tool angle is.

If you right click in the operations manager, you will have 2 options for the blend tool path. Old school and new school. Select the old school blend. It will have the spiral option. This is pretty exaggerated as I have two sharp ends or surfaces that drop off, but you can see how this works. The only other things that I did was set my tolerances to this: and this: And this almost works no matter what the tool angle is.

I would try the blend toolpath. Set the Cutting Method to Spiral.

I am interested to see how you did this. Looking forward to your sample file.

In Configuration, View Settings....check: Number of entities for dynamic rotation. Mine is set to 1000000, but my graphics card can handle it. Depending on the number of entities that are showing, they could be just disappearing when you try to rotate.

Then something is not working correctly and should be checked out. Under the "Info" tab, check to make sure that "Machine Components Collision Detection" is "Enabled"