Mastercam makes the worst use of solids for toolpathing of any CAM system I've ever used. Below are quotes that prove just how bad solids are for toolpathing in Mastercam. After 6 major releases (or more) that this is the case is just pathetic. Even some of the most ardent Mastercam fanboi's, who have made excuse after excuse for poor design and implementation of solids n Mastercam for years now, have had enough.
"i completely quit using solid selection when toolpathing. i always create a surface from the solid and then use those surfaces for toolpathing. my problems seemed to go away."
"Why can someone buy a xbox game for 25$ that has hyper-realistic amazing graphics, while for the past 5 years we can't get a solid face displayed correctly! IMHO someone needs to man-up and roll some heads in the graphics dept back at cnc. Hell hire a few game designers."
“Why can I go to any hardware store and get a free design your own kitchen or back yard deck software disk and the graphics are better than Mastercam”
"I started using MC about 6 months ago myself (new job and all) and I have to say I was at a total loss as to why I had to create curves as well. I was used to programming entirely from the 3D model (Powermill). However, with MC, using the 3D model to program is waste of time for the most part, and it appears as though the majority of your programs are created using wireframe that is created from the 3D model, either in surface or solid form."
"You have absolutely no idea just how much I miss my Delcam products. I had to leave it to stay gainfully employed being as my last place of work went under. Believe me, the first chance I get to go back to working with PM, I will jump all over it"
"Of course there are work-arounds with creating curves but it'd be nice to be able to fully drive tool paths on a a single solid model."
"I have had the same issues with selecting from a solid model. This has been a problem for some time. Just like all the other bugs this one will probably never get fixed"
Excuses and workarounds offered on why after 7 major releases Mastercam solid chaining is still badly broken from an employee of the Mastercam reseller who has a monopoly for selling Mastercam in Canada:
"Why not create curves on all edges and then use the wireframe chaining options. If your determined to get the solid chaining to work for you then try selecting your part differently. Maybe try selecting a top edge of the solid instead of the bottom edge."
A response from a smarter Mastercam user who knows B.S. when he see's it in regards to the above lame excuse and suggested workaround:
"This is all good, but you should be able to select from the model. Why do they even have the option if you end up having to create curves on edges?"