I need help making a mold of a tricky part.

FlyingMexiTacos

New Member

• Dec 8, 2017

• #1

First post so I'm not sure if it is in the correct board.
I'm wanting to make a mold of this part so I can cast lots of parts to sell. However I'm not sure how to do that due to the geometry of the shape. I considered doing it down the axis of symmetry and gluing two bits together however it will be under mechanical stress and I would rather it be one piece.

Any advice would be appreciated.

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renaissance_man

Master Member

RPF PREMIUM MEMBER

• Dec 8, 2017

• #2

Does it need to be hollow inside?

 

FlyingMexiTacos

New Member

• Dec 8, 2017

• #3

renaissance_man said:

Does it need to be hollow inside?

Click to expand...

Yep. That's the outer housing to a mechanism.

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Gaby

New Member

• Dec 8, 2017

• #4

You should try the Mould Maker's Guild facebook page. The people over there are super lovely and would probably really enjoy figuring something like this out.

https://www.facebook.com/groups/1512208469063768/

 

JPH

Sr Member

• Dec 8, 2017

• #5

Depending on the size, it might be loads easier to get a 3d printer and make the thing. I know that is outside of the box you are thinking, but a pipe goes through it, it is larger past the pipe opening on the inside...lotsa things to consider.

$200 and you will be on your way printing, vs how much time and money trying to cast it?

 

BrundelFly

Master Member

RPF PREMIUM MEMBER

• Dec 8, 2017

• #6

Yikes!!!

Too severe an undercut,..but, it can be done using a hallow "plug mold", it would be a three part mold. In other words...the center plug has to be made hallow, and then I would back fill it with a second silicone plug that was also removable.

Good luck.

 

brandomack

Sr Member

• Dec 8, 2017

• #7

Follow Volpin Props on facebook, he's shown how to do 3 part molds in the past

 

TazMan2000

Master Member

• Dec 8, 2017

• #8

That part would be nearly impossible to make a casting of in its present state. Can it be redesigned to split it down the centre and the two halves moulded separately? The castings could be glued together afterwards, or perhaps modified to take screws.

TazMan2000

 

S

SimplyTim

Active Member

• Dec 9, 2017

• #9

I see a few people have already given you some good ideas but for me "to sell" says 3D printer. Casting material and resins are not cheap and there is a HUGE learning curve vs. figuring out new software being a much more forgiving environment. Personally producing parts like these are why I bought my printer.

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