Polyurethane LEGO Mold

In case you haven’t heard yet, we have a lot of expired medical-grade polyurethane.  The Powers’ family were interested in learning how to make and pour a mold, so what better than LEGOs!

The negative mold was made by placing lots of LEGO bricks on a building base, then surrounding the base with a lip of LEGOs to keep the polyurethane from running over.  The polyurethane then created the negative of the LEGOs, preparing a cavity in which to pour gelatin to make gummy LEGO bricks.

You can see the base mold (yellow, on the table) and the finished LEGO bricks here:

If you’re not up to the challenge of building your own mold, there are plenty online :-)

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