Ghostbusters Holtzmann's screw-u necklace

monta

New Member

• Jul 18, 2016

• #1

I saw Ghostbusters two days ago; not a great movie but I fell in love with Holtzmann, so I decided to do a quick 3D printed build of her necklace.

I designed it in Fusion 360 and imported the screw from McMaster-Carr.

Here's a rendered version of the model (with a little weathering to make it look less fake).

 

monta

New Member

• Jul 18, 2016

• #2

There is no way to 3D print Holtzmann's necklace from Ghostbusters (because of the screw), without splitting it in half and printing "both sides",
Here's what the raw prints looks like, straight from my Flashforge Dreamer. One fore each side. (I used Simplify3d as the slicer).

 

monta

New Member

• Jul 18, 2016

• #3

The next steps in creating Holtzmann's necklace is to solvent weld the pieces together. They are printed in ABS plastic so I just wipe them down with acetone and clamp them together.



Next I do some "acetone vapor smoothing", but I'm not really using acetone vapor, I just brush some acetone on a few times. The acetone melts the top layer of the plastic and the surface tension of the liquid helps smooth it.

Then I gave it a rough sanding and couple of coats of primer in my cardboard and computer fan "paint box".

 

monta

New Member

• Jul 18, 2016

• #4

Next I sanded it some more and spray painted it silver.
I added a little rub and buff to give it some depth and sealed it with a couple of coats spray clear coat.

Finally a soldered on a ring to connect it to the necklace I bought at the local thriftshop (for $1).

And finally.


It's a bit "quick and dirty", but I haven't made anything in a little while so it satisfied "the urge".
If anyone wants the .stl files, let me know.
Comments and suggestions welcome.

 

Kitty Butler

Well-Known Member

• Jul 18, 2016

• #5

Happy to finally see some Ghostbusters stuff here. I want to do an outfit for Holtzman!

 

Namssorg

New Member

• Jul 18, 2016

• #6

Have you considered just printing the circle and the U, and then using a real screw to join them? You may need to design a negative buck or something to hold the floating U in the right location while you're drilling + attaching everything.

 

monta

New Member

• Jul 18, 2016

• #7

That would probably work great for "singles", I could 3D print a rough hole for it as well. I was originally thinking about casting it all.
A bit of metal would probably be nice.

 

monta

New Member

• Jul 24, 2016

• #8

Some people have been asking for the .stl files.

So here they are:

Top: https://drive.google.com/open?id=0BycB3mmZChZ8SlQ1WTg1Y2c1bE0
Bottom: https://drive.google.com/open?id=0BycB3mmZChZ8ZUJvV3VpN2tVaGs

Post if you make one.

 

Borzou

Well-Known Member

• Jul 25, 2016

• #9

I don't think the screw goes through the U. I think the U is a flatter letter in which the screw passes under and through the ring. Also the ring is more rounded. Other than that I think you have a good start to making an awesome replica!