Two-part mold for a silicone bumper

by NilsRoe, published

Two-part mold for a silicone bumper by NilsRoe Mar 22, 2014
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Experimental two-part mold meant to make a silicone bumper.
I recently bought some two-part silicone to experiment with. I have watched numerous videos on two-part molding and decided "why not print the mold instead of first making one in silicone, then waste more silicone on molding the part?"
For a simple part which won't require a flexible mold to demold, it seemed reasonable.

In the pictures, it is used on the fridge, protecting it against bumping into the kitchen door frame. I have encased a disc magnet into it so it won't fall off.

This is an experimental mold, just to see if it will work. I already made a one-part mold with some text; to form a stamp. It worked very well, except for some very small details in the letters.


Print two pieces, press them together. Close the seams by wrapping a piece of tape around the mold. Mix the silicone and pour it slowly into the mold to avoid air bubbless. Wait for the silicone to cure, remove the tape and carefully open the mold. Leave the part in the mold and remove any flashing with an X-acto knife. Then demold the part and use wherever you like.

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