My best molds

Right, so setting up ready for a silicon mold is the most important part I have found.  I am using a large cut straw in the middle - this will be the top of the mold and where I pour the resin into.  From there I have laid out bits of skewer which will leave an area where the resin will flow down to each bottle.  At the end of each bottle I have used a little drop of superglue to attach a piece of wire sticking up.  These are vents and will allow air bubbles to escape when resin pouring.  Lastly you need to pop indentations in the bottom half of the mold as 'keys' to fit the blocks together properly to cast.