After the first version, I was running out small yogurt containers to use and the larger pots would not fit into it.

So when I came across this Ice bucket at a car boot sale and being larger, bigger and much more stronger than previous acrylic tube, I thought it would be a perfect upgrade.

Materials used: (Please see version one for links to some of the common materials used)

Double walled Ice bucket (I believe it is made of strong acrylic material)
Nozzle of a silicone sealant
Base for the ice bucket (any flat, smooth, strong material with at least 3mm thickness will do)
Silicone rubber
suction pump
one way valve
Clear PVC tubing
Circular grill (as a container for the silicone rubber)

Tools used:

scalpel knife
Dremel drill with cutting and drilling bits
Tapered reamer
small torch flame
Pair of scissors

CAUTION: When operating electrical equipment, always follow manufacturers safety instructions to protect yourself from possible accidents.

Step 1: Modification

I drilled a hole for the silicone nozzle and again, the ever useful tapered reamer came real handy.

Step 2: New Base

Because this was a much bigger container, I had a little bit difficulty finding a base for it. In the end managed to find this copper plate tucked away in my shed that I got for pennies from a carboot of previous years. Its diameter was larger than that of the bucket opening which was exactly what I was after. So now I had to create some kind of air tight barrier between it and the ice bucket. To do that I thought of using silicone rubber that I already had and the next task was to create a circular wall to pour the silicone rubber into.

As it happens, I had this circular metal mesh ring that my workplace chucked away when they've upgraded the light fixtures. Because it was few cm's too big, I cut the excess with a dremel and joined it with an aluminium insulation tape.