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Make a Simple Mould and Cast a Range of Scale Miniature Bottles


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Materials Used to Make Scale Miniature Bottles Using Silicone Molds
Mold putty, pill bottle and bottle shapes used to make simple molds for scale miniature bottles.

Materials used to make a two part silicone putty mold for simple scale miniature bottles made from two part epoxy casting resin.

Photo copyright 2010 Lesley Shepherd, Licensed to About.com Inc.

To Make Miniature Bottles In Several Shapes, Scales and Sizes You Will Need:

  • Two Part Silicone Mold Putty Preferably use one of the brands that makes more pliable molds. I used Alley Goop for this tutorial, but have also used Angie Scarr's Minitmold putty which is a similar texture. Firmer putties like Ranger Mold N Pour will also make bottle molds but you make need to adjust your shapes to suit the firmer putty. If you want to make larger bottles, you will need silicon molds which are pliable when set, especially if you have weak hands.
  • A Suitable Master Shape - I'm assuming that you are starting from zero here, so look at your stash for anything which could make you an interesting bottle in the correct scale. I used one end of a large paper embossing tool, and also the end of a pen, with the pen refill extended for the neck. If you want bottles with necks, try to find something which is at least 1/16 to 3/32 inches in diameter. Smaller neck dimensions may prove too tiny for casting liquids to fill. If you can't find a suitable shape, use a piece of thick wire and a pill capsule or rounded oblong bead or something similar. You can also make your own custom shapes out of two part epoxy putty. Your basic master shape needs to resemble a bottle, be the correct scale size, and be metal, plastic or a very smooth surface if possible. It also needs to be a simple shape which is narrow on one end and widens to the other end without a lot of detail. If the shape is too elaborate (too curvy) it may get stuck in the mold material. It needs to be something you can easily pull back out of a piece of set up silicone mold putty.
  • A Mold Container - This should be something slightly larger than the object you are casting. If it is too large, you will waste putty and make a very stiff mold. I used an empty pill bottle. For small bottles (like the pen tip) you can make the mold without a container if necessary.
  • Modelling Clay - to fill up the extra space in your mold container. If your mold container is close to the correct size and stable, you may be able to get away without using this.
  • Marking Pen or Tape - to mark the size of your bottle master.
  • Casting Material - A number of materials can be cast to give you the effect of glass bottles. Fimo Deko Gel (Liquid Fimo) will give you bottles with a 'frosted' effect. Epoxy resin I used Envirotex Lite, it is very old stock which may account for the number of bubbles in my casts. If you don't want clear bottles and don't need long necks, Apoxie Paste two part flowable epoxy will give you an effect similar to ceramic bottles.
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