[Barefootboy4]

Please review the two attached JPG's. I'm building a glider with fellow club members and the wing will sit in a wing saddle molded into the fuse. Of course I will machine a left and right mold on my CNC. As you can see the wing saddle has a 6 degree angle. Because of the Negative draft angle how can a CNC person beat this problem? I'm thinking of a way to do a insert in each mold half. Any ideas on how the pros would deal with this. Also notice there is a notch in the front which the Leading edge of the wing notches into which adds to the problem. I machine my molds out of corian which is easy to epoxy together. Love some help here
Steve

[Down&Dirty]

It is hard to tell from the pictures but I am assuming that the wing cutouts will make it difficult to remove the part from the mold. The overlap notch in the front doesn't help any.

I would go with a 3 part mold. Make the left and right as planned but machine a couple index slots where the wing saddle is. Then make another part just for the wing section cutout. Index this into your left and right molds. When you pull your molds apart the wing piece should be able to remain in the part. Then it can be removed.