ATTENTION: As of March 2017 the Resin Addict Forums are being wound down.
New members are no longer being accepted. Read more about it here.

Mold with Inner Structure

Questions and discussion of tools, materials and techniques.

Moderator: Wardens

Mold with Inner Structure

Postby Captasty » Thu Dec 22, 2016 3:17 pm


I am looking to cast a 3D print I will be making soon. It is a square shape with an inner cross shape. Think a cube with a hole in each side going all the way through to the other side. I am very green in molding and cannot quite determine the best way to make a cast of it.

I just don't see how to remove the model once cast because the cross shape locks it in.

Thank you
Posts: 2
Joined: Thu Dec 22, 2016 3:07 pm

Re: Mold with Inner Structure

Postby Gadzooks » Mon Dec 26, 2016 11:00 pm

Lots of things are printable but not cast able

Would need to see some pics to really determine
Posts: 3
Joined: Tue Sep 13, 2016 11:09 pm

Re: Mold with Inner Structure

Postby Captasty » Wed Dec 28, 2016 7:44 am

Here is a link to two photos of the rough structure. This will be most likely be a rubber like material. Poles will be inserted into the holes, so a 2 part mold that is glued would most likely not be strong enough.

Thank you.
Posts: 2
Joined: Thu Dec 22, 2016 3:07 pm

Re: Mold with Inner Structure

Postby Fleafa » Tue Jan 03, 2017 9:56 pm

Whilst that is castable, it would require a complex mould. I wouldn't even attempt it, personally.
User avatar
Posts: 835
Joined: Thu Jul 07, 2011 2:56 am
Location: Fareham, Hampshire, UK

Re: Mold with Inner Structure

Postby Strawman » Fri Jan 20, 2017 2:49 am

would it be possible for you to print the piece in two halves, and then just fit them together after? That would be much easier to cast.
Posts: 5
Joined: Sat Sep 13, 2014 11:12 am

Re: Mold with Inner Structure

Postby Blindhorizon » Fri May 19, 2017 6:56 pm

Get a sharp blade and bend the mold back once you cut to the square and run the blade through the connecting piece that locks it in. 1 clean cut and the piece should come back together and kit cause many issues casting. I have cast plenty of items that get locked into molds.

What type of mold are you considering for this? 1 part of 2 part mold?

Edit: I saw the second imag fleafa is 100% correct that would be a butch of a mold, the other guys idea of cutting it in half and making molds of that would be way easier.
Posts: 354
Joined: Tue Jul 24, 2012 4:37 pm

Return to Dr Polymer

Who is online

Users browsing this forum: No registered users and 2 guests