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Q. What radius do you recommend on sharp corners?
A. Molds should be designed with generous radii and fillets wherever possible. A minimum radius of .020" (0.5mm) is recommended at all sharp corners and larger radii are generally beneficial when possible. However, making the radius too large will cause a sink mark on the opposite surface due to the greater mass of material.
Q. How much more draft is needed when molds are textured?
A. 1 draft plus 1.5 draft for each 0.001" (0.025mm) grain depth
Q. Do vents close up?
A. Yes, and vent depth should be checked at each mold cleaning or PM.
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Derek Luellen
(734) 324-6694