Saturday, March 9, 2013

Press Molding small bitz

Press Molding small bitz

So I won a large lot of Necromunda Orlocks on eBay awhile back.  Three of the four heavy weapons models had no weapons or backpacks.  This makes me a sad panda.  So here is a quick tutorial on how to re-create the missing way oop parts

You will need one original to create the copy from!

You will need a flat clean work area, I am using a piece of plastic card here
I recommend Legos to build the mold box
Next place Instant Mold in hot (not quite boiling) water until it is soft and pliable. Place the instamold in the bottom of the box and press your bitz around halfway into the IM.  Allow the IM to harden at room temperature or place in the fridge. 
First half of mold is filled.
Next heat up another portion of IM and cover the other side of the Bitz, then cool as before.
Second half of mold is filled.

Once cooled to room temp remove the mold from the box and slowly separate the IM halves.  Mix up your green stuff or ProCreate putty and pack both halves of your mold.  Re-align your mold halves and press them together slowly squishing the excess greenstuff or Procreate out, you will probably need to trim some of the excess off before it sets. I use very strong clamps and small boards of MDF when pressing the mold halves together.

I use Procreate at a 60-40 mix per the instructions for a hard curing sand able finish.

Mold half with ProCreat bitz in it

Original compared to the copy
Above is a photo of the original and re-cast bitz,  Mold making time is around 30 minutes. The ProCreate sets up in around 4 hours, I let these set up while I was at work and I cleaned the mold lines after I got back home.  ProCreate continues to harden over the next 48 hours or so, meaning mold lines are easier to clean sooner than later.
Best part of this is I can reuse the Instant Mold for the next project or lost bit.

More examples:
All of these came from eBay, missing weapons.  The weapons are press mold copies made of ProCreate and the front 3 have copied backpacks.

These vents are press molded from Green Stuff.

No comments:

Post a Comment