How To Make Bottle Slumping Molds
This is why slumping molds usually have a hole or two in the bottom.
How to make bottle slumping molds. Set the cup aside and reassemble the mold. This will be the mold for the slump mold. Find a small bowl of any material which has the shape you wish to create in glass. The key is to make the mold out of the right material which will withstand the 1 200 degree temperature in the kiln.
This example explains how molds are made from clay. A one pound piece should be sufficient for a mold of a small bowl. Dec 19 2015 molds for glass slumping are surprisingly easy to make. In the end i wasn t happy with it and felt that the fiberboard wasn t quite thick enough to provide enough depth to the design this way.
Unfortunately the long shape of glass bottles make them hard to fit in many kilns. Drill a thin hole through the top section of the mold until you reach the open cavity within this is where you will insert the casting material to make a new cup. There are two basic types of molds in glass slumping. Knead some clay as you would with bread dough to give it an even consistency.
Any ceramic or glass kiln can be utilized for this as long as the bottles fit. So we designed the trio kiln specifically to fit all our bottle slumping molds. You will need a kiln that is able to fire to about 1500 degrees or higher.