Keeping Bottles from Rolling

A common problem in firing bottles is that they may into one another and stick, making both bottles useless.

One way to overcome this is to let the bottle find its heavy point by setting on smooth and level surface. It will gently roll to one direction before slowly coming back in the other. When it stops this oscillation, the heaviest part of the bottle will be on the bottom.  Mark the bottle in some way so you can move to the kiln in that position. If after this, it rolls in the kiln, then your shelf is not level. 

Additional assurance against rolling is putting a small piece of fibre paper (1 or 2 mm)at each side of the point the bottle touches the shelf.  Thinfire, Papyros, and other shelf papers are not enough to ensure there will be no movement. But the small bumps of fibre paper are enough to stop the bottle from rolling.  This will work when you want a particular part of the bottle up or down, but it won’t stay in place otherwise.  

Other materials you can use to prevent the bottle from rolling are crumbled chalk, a small pile of whiting or kiln wash powder. 

Preventing bottles from rolling in the kiln is about finding the natural heavy spot, or propping the bottle in place with one of a variety of heat resistant materials.