How to use liquid acrylic in molds

Written by jennifer meyer
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How to use liquid acrylic in molds
(Chinese dragon, resin cast - symbol for year of th image by Kirubeshwaran from

Liquid acrylic usually comes in a can and must be mixed with a catalyst in order to set. Molds, however, come in a number of different forms and the acrylic will act differently with different varieties. Some companies produce moulding materials tailored for use with their own acrylic products. While this is the safest route, you can reliably cast acrylic in most moulds so long as you use a spray-on mould release.

Skill level:
Moderately Easy

Things you need

  • Mold
  • Gloves
  • Face mask
  • Newspaper
  • Goggles
  • Plastic cups
  • Popsicle sticks
  • Mold release
  • Acrylic dye

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  1. 1

    Set up your work area on a level surface somewhere with good ventilation. Lay newspaper down and set your mould on top.

  2. 2

    Spray the mould with mould release. Mold release comes in a small bottle and should be usable with most acrylic products. However, some acrylic products state that talc powder may be used instead. Check the acrylic packaging to be sure.

  3. 3

    Pour enough liquid acrylic to fill your mould into a plastic cup. Make note of how much acrylic you have poured.

  4. 4

    Check the can of acrylic for a chart. Most of them include one. It will tell you how much catalyst you will need for any given amount of acrylic. Measure out the required amount into a separate plastic cup.

  5. 5

    Pour the catalyst into the cup of acrylic and stir it for one minute.

  6. 6

    Measure out a few drops of dye into the mixture if you wish to colour it and stir the cup for another minute. The amount you will add depends on how vivid you wish to make your acrylic piece.

  7. 7

    Pour the mixture into your mould. Make sure it fills every crevice. Guide the flow with your Popsicle stick.

  8. 8

    Allow the acrylic to set. The time this takes will vary according to the brand of acrylic and may take anywhere between an hour and a day.

  9. 9

    Gingerly peel the mould away from your acrylic piece.

Tips and warnings

  • Always wear gloves, a face mask or respirator, and goggles wen working with liquid acrylic. Uncured acrylic and its catalyst are toxic.

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