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Help with helix undercut filling for mold

Question asked by John Mudroch on May 17, 2017
Latest reply on Feb 7, 2018 by Victor Gabriell

I need to make a 2 pc mold for a part containing a helix. By nature, the helix creates undercuts as shown here:


Obviously, I can't have these and expect the part to release from the mold. We do a lot of similar molds and currently fill in the undercuts manually. As you would expect, this is very time consuming and cumbersome. I am hoping to find an easier way to fill the undercuts. The geometry does not need to be precise, but must transition smoothly. I have attached the part files I used to create this. Any help would be immensely appreciated. Thank you!