I’ve been trying to cut a saxophone shaped part and have been experiencing a problem that I don’t know how to solve. This has happened three different times, each time with a different version of an .nc file, but they all originated from the same design.
In MeshCAM I created a project that ONLY had a waterline path. I’m guessing that is how you should cut out a part from stock material.
Everything was moving along just fine, until the bit took an unexpected left turn and went way over to the edge of the stock, even going OUTSIDE the established machining region. The bit then returned to the correct path and continued. In four locations it made the same (unscheduled) trip to the left edge of the stock. As you can see from the toolpath above these are not planned.
So did I do something wrong? My previous projects used roughing passes and finishing passes, this is the first time I have just done a waterline only job. Is that how you are suppose to cut out a part?