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Issue with rounded edges
I've been having a problem cutting my rounded edges correctly. I'm working on a guitar model and when I cut the pieces out there's always a lip round the edge where it should be flush. This has happened on the backs of necks as well as bodies. Here is the process I use:
1. 3D Adaptive Clearing
I usually leave the default settings here. 1/2" flat endmill.
2. 3D Parallel
1/4" ball end mill, stepover of 1.5 mm, perpendicular passes added. I usually use Silhouette and tool center on boundary, otherwise the endmill goes all the way to the bottom of the model and tries to move with a significant portion of the non-fluted shaft in the wood.
3. 2D Contour
Selected contour is the outline of the piece I am cutting. 1/2" flat endmill. Multiple depths with maximum roughing stepdown at 6 mm. Everything else is left at the defaults.
I've tried different settings on the 3D Parallel and 2D Contour toolpaths all to no avail. Maybe there's a simple solution I've missed, or I need to reorder the toolpaths? Maybe even use different toolpaths? I've noticed that the lip is present on the simulations as well. Any advice would be appreciated.
I've included pictures of the body model, CAM simulation, and result from the CNC router.
Fusion