How to Make Fake Gold Bars

Updated November 21, 2016

All that glitters may not be gold, but it can look a lot like it when you know how to fake it. If you find yourself in need of a lot of the glittery substance and the real deal is too precious for your particular situation, a few inexpensive materials and a couple of hours of crafty alchemy can transform an ordinary space into a vault at Fort Knox. The secret is in the can---of gold metallic paint, that is. Containing fine, shiny brass powder, it makes an excellent substitute for gold when facade is all that counts.

Shape the foam blocks into bricks with tapering sides, using a sharp knife. Each brick should be shaped like a long, low truncated pyramid or loaf. Size is not critical as gold bars come in a wide variety of sizes from 1 gm to many pounds, but keep the proportions roughly two or three times as long and high or wide.

Mix a quantity of plaster sufficient to coat one or two bricks at a time in a large bowl according to package directions.

Push a skewer into the bottom of each brick to use as a handle for dipping it in plaster.

Dip each foam brick into the plaster in the bowl to coat it on all sides. Plaster should be the consistency of double cream at this point.

Set the coated bricks aside on a wire rack until the plaster hardens. For a complete cure, allow at least 24 hours or until the plaster is no longer cool to the touch when held to your cheek.

Use sandpaper to smooth and even out rough areas once the plaster is completely hard.

Wipe off any plaster dust with a damp rag and allow the wet areas to dry all the way through once more.

Spray the bricks with gold paint untilthey're lightly coated. Repeat several times, using light coats each time and letting them dry a few minutes between coats to produce the best finish.

Let dry for the period recommended on the paint can before using.


For best results, make sure every bit of the foam is covered with plaster before painting. Many spray paints contain solvents that can eat into and dissolve unprotected foam. If you want to put letters on your bars, use stamps designed for leather work to press the numbers and letters into the foam before plastering.


Wear gloves, a paint mask and eye protection when spraying paint, and always paint in a well-ventilated room or outdoors.

Things You'll Need

  • Floral foam blocks
  • Knife
  • Plaster of Paris
  • Large bowl
  • Wood skewers or kebab sticks
  • Wire rack
  • Sandpaper
  • Gold finish metallic paint
  • Gloves
  • Goggles
  • Mask (rated for paint)
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