I have never read or been told how to make cone packs. I have seen others and copied as best I can. Most of the time the clay the cones are in crack in the firing, sometimes coming apart. I had a near disaster last glaze firing. The pack had broke apart and one cone had leaned precariously close to a bowl. So I would like some instructions on what to use to make the pack, when and how to make it.
Many thanks to all.