Monday, October 28

Mold Rubber Monday... Light up the Night with AMAZING Nightlight Skulls by Lonnie Sexton

Q: To Be? Or Not to Be? A: To Be!


  1. Create Primary Object 
  2. Bladder Mold 
  3. Mold Box 
  4. Back Fill Block 
  5. Remove Primary 
  6. Casting 
  7. LED’s 
When casting large projects with Amazing Mold Rubber, I like to use the layer & back fill method to save material. Coating the primary object in layers. Then using expandable foam to create a sturdy back fill block. I only used ¾ pound Amazing Mold Rubber to create the bladder mold. It would have required approximately 6 lbs to fill the entire mold box with Rubber.

The skull primary is created using Polymer Modeling Clay and a plastic toy.

Rubber Mold

The first Amazing Mold Rubber Layer (50 gr) applied right after mixing. Creates the first super thin detail layer.

Wait 4+ hours before applying the 2nd Amazing Mold Rubber layer. (50 gr)

Wait 4+ hours before applying the 3rd Amazing Mold Rubber layer. Pre-cure 45 minutes in mixing cup before applying. Filled in eye sockets and nose. (60 gr)

Wait 4+ hours before applying the 4th Amazing Mold Rubber layer. Pre-cure 45 minutes in mixing cup before applying. (70 gr)

Wait 4+ hours before applying the 5th Amazing Mold Rubber layer. Pre-cure 45 minutes in mixing cup before applying. (100 gr)

Wait 4+ hours before applying the 6th Amazing Mold Rubber layer. Pre-cure 30 minutes in mixing cup before applying. (60 gr). Repeat 3 more times. 

Let cure for 24+ hours. 

Cut away excess base board and rubber. Assemble the mold box.

Back Fill with Expandable Foam

Cut the excess foam off the bottom.

Remove the Primary object & Amazing Mold Rubber mold from the foam back support. I cut a small relief seam towards the back of the mold to allow easy removal. The foam support will hold the mold seam together while casting.

Clear Casting 

Mix equal parts "A" & "B" of Amazing Clear Cast Resin.
This mold requires 18 oz. (9 oz each part).

Fill the mold slowly. Let cure 24+ hours. Larger castings will cure slightly faster. on the outside, but always wait at least 24 before attempting to demold.

Remove from mold. 


I re-purposed an old LED Rose my daughter donated.
It has 3 LED’s with different modes and colors.

Below is a preview of the colors it cycles through
when mounted beneath the clear cast skull.

Now to come up with some sort of base. I intend to use it as a Halloween night light but this is the first of many skull projects based on different themes. 

What objects would you mold to light up
your world using Amazing Mold Rubber?

Please come back and join us for more exciting projects, inspiration and tutorials.


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  1. Lonnie, the spray foam idea is BRILLIANT!!

    1. :) You can use the canned spray foam, but it doesn't expand as much as the 2-part mix and pour foam. It's only x3, 610 expands 10x the volume. You can also use plaster, but it takes longer to cure.

  2. Great idea to add the expandable foam.

  3. What fantastic technique! Thank you for the detailed and specific times and steps. It will be very helpful in creating future projects!

  4. This method though a little more labour intensive - certainly is worth its weight in MOLD RUBBER!!! The detail and clarity of the LED light through the clear cast resin is remarkable. Hope you get lots of screams on Halloween :)

  5. wow, a lot of work went into this, but the final result makes it all worth it - love this, and all the different colors. thanks for all the information on your step by step. amazing job


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