Design Guides

Design Tips

At Taurus Engineering, it is our goal to accommodate our clients when at all possible. This includes target delivery dates and other requests. Contact us today!

Part design tips for saving money:

  • All wall sections should be as uniform in thickness as possible. Generally, wall sections should be no less than 0.0625″ (1/16″) and no thicker than 0.125″ (1/8″), with 0.09375″ (3/16″) being quite common on many smaller parts.
  • Make sure that corner radii matches so you don’t have thicker or thinner wall sections in the corners.
  • Undercuts in part geometry increase tooling costs.
  • Uneven parting lines that are not flat increase mold costs.
  • Deep cavities over roughly 2-1/2″ may increase costs as standard MUD mold bases are 2-7/8″ thick.
  • Allow for draft in your design. Parts without draft tend to cause serious molding issues. Unless the part is textured, generally 1 degree per side is sufficient.
  • Thick walls (usually over 0.100″) can affect the cycle time, thus affecting part price.
  • Parts having thin walls (usually under 0.050″) may be difficult to mold, thus affecting the part price.
  • Usually, walls can dip down to as little as 0.015″ without affecting molding, as long as it is in a very small confined area.
  • Areas with dead sharp corners can trap gas and be difficult to fill.
  • Pointed features on a part can be difficult to fill.
  • Small lettering can be difficult to fill because of trapped gas if it is deeper than 2x the letter wall thickness.
  • Keep in mind that parts need to be ejected from the mold. Allow room for some type of ejection. Pins are the most economical. Blade ejectors, sleeve ejectors and stripper plates may add significant cost.

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