I need to flycut the top face of an irregularly shaped cast epoxy part.
The part is cast using epoxy into an open top aluminium mold. When the part is removed from the mold there is a meniscus type sharp flashing along the edge.
What I want to do is flycut about 1mm of material off this face to remove the sharp casting flashing and to create a smooth surface.
The only way I can think of holding it is in a vacuum chuck of some sort as the four sides are sloped (like an inverted flat top pyramid).
Part side view is as below;
Need to flycut this top face
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