The Lid

I got a fancy bucket with a air tight lid.  To modify it to attach the silicon shell, I cut out the middle of the top.  Silicon and polypropylene that the bucket it made out don't have a common adhesive.  This meant I had to find another way to keep them together.  To keep them together, I wanted to bolt it to the top of the bucket.  I laser cut a ring with 28 holes in it to fit around the top of the bucket.  I cut out the middle of the bucket and drilled matching holes around the outside.  Then, using a hole punch i put holes in my piece of silicon and put some sil-poxy around them.  I used a couple 1/4" bolts to hold the pieces together.

laser cut acrylic ring with holes 

punching holes in the silicon

The lid with the acrylic ring and silicon partially bolted in

Close up of the silicon seal

-Annie