Barbsbus 4 fun Posted April 7, 2021 Report Share Posted April 7, 2021 My adult grandson wants to make some planter pots and we were wondering if we should use terracotta clay or if we could use some of the clay I already have that fires to cone 6. I don't think he wants to glace the pots and he will probably make them using coils or maybe learn to throw them on the wheel. Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted April 7, 2021 Report Share Posted April 7, 2021 I make planters with cone 6 clay all the time. I usually just do a slip decoration, or a vitreous engobe, so that they’re once-fired. Low effort and fun! The plants have yet to complain about my clay choice. Link to comment Share on other sites More sharing options...
Barbsbus 4 fun Posted April 7, 2021 Author Report Share Posted April 7, 2021 Can we just fire them to cone 6 and skip the bisque since we are not going to glace them? Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted April 7, 2021 Report Share Posted April 7, 2021 If you do a slow glaze fire, there’s no reason not to. If you do a fast fire, that’s another story. Link to comment Share on other sites More sharing options...
Barbsbus 4 fun Posted April 7, 2021 Author Report Share Posted April 7, 2021 What is the difference between a slow glace fire and a fast fire? Link to comment Share on other sites More sharing options...
Magnolia Mud Research Posted April 7, 2021 Report Share Posted April 7, 2021 1 hour ago, Barbsbus 4 fun said: What is the difference between a slow glace fire and a fast fire? the difference is if the slow fire is used then the clay will most likely have a temperature profile similar to the bisque firing plus the firing to the final temperature. on single firing the time from start to the regular bisque temperature needs to be equal to a bisque firing time; then the temperature rise to the final temperature -- cone 6 in your case -- can be as fast as you can get there without thermal stress cracking of ware. The standard fast fire schedule is based on the ware having a separate bisque firing. The bisque temperature rise is slower because the ware needs more time to "burn out" the non-ceramic materials in the ware. LT Link to comment Share on other sites More sharing options...
Barbsbus 4 fun Posted April 7, 2021 Author Report Share Posted April 7, 2021 Thank you. I enjoyed looking at your beautiful work on you r website. Are the mugs done with the slip decoration? They are so pretty. Link to comment Share on other sites More sharing options...
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