INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Plastic Injection Molding a Piece with Undercuts

Plastic Injection Molding a Piece with Undercuts

(OP)
Hello All,
I am a newcomer to Plastic Injection Molding and would really appreciate some advice.
I have a prototype object that will be made from a type of polypropylene. I only need a maximum of 10 units initially to ensure that the product is satisfactory. The issue is that there are many undercuts in the design. Imagine if you will, a variety of different shaped trees growing randomly in a field. This will be the design. The trees and the field will need to be formed as a single object to maintain strength.
I printed a similar design which was aesthetically OK but due to material limitations was not suitable.
Maybe Plastic Injection Molding is not the approach I should be taking?
Thank you in advance

RE: Plastic Injection Molding a Piece with Undercuts

Other than the top right one I don't see any glaring issues with the other 3..
But slight changes to the top right would make it easily moldable..

Spend a little time reading through the basic resources here..
https://www.protolabs.com/resources/whitepapers

https://www.protolabs.com/resources/injection-mold...
https://www.protolabs.com/resources/injection-mold...


In general, if you can avoid "side actions", "bump-offs",etc... I "attempt" as best I can to do a simple "clam shell" type mold.. The tooling cost,etc... is far cheaper that way..

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close