Code not generated as expected. . .

[atrueresistance]

The project link  http://a360.co/1Txr9Ee

So I'm trying to figure out what is wrong that makes the shapeoko randomly do what it wants. This is a screenshot of the toolpath. Post done using carbide post processor. In the tool path it should do both of the card upper pockets before doing the lower circle pockets.

SIM from fusion looks good. 

Looking at the code file generated using CAMotics, shows a very different path generated from what simulation shows.

Prior to viewing code in CAMotics, I ran the code using bCNC. It always seems to happen about this far in. This is the third piece of wood I've glued up for this that has failed.

In this video you can see it failed prior to this recording. I was filming expecting it to fail, but this pass went fine.

However, the pass right after that I was greeted to this.

[HughesTooling · Accepted solution]

I'm not to sure what's going on in the video, is the second on a lot deeper. Anyway something I found wrong with what you're doing is trying to use 2d pocket to machine to 2 different levels. At the moment when you're machining the lower pockets you have a lot of wasted air cutting going on because the tool paths start at the model top. They look like this.

You're better off using 2 ops one for the first level pockets then a second for the lower level. Then you get this.

I've attached a modified file. If you want to do it in one op then you'd be better off using a 3d pocket.

Mark

[atrueresistance]

Thank you so much. I wasn't aware you were not supposed to mix multiple depths in the same 2d pocket. When my shapeoko 3 was moving in the Y- direction the bit tended to bounce. Every time I thought it would fail, but did not.