Cone Six

Warned before the cone bends.

Cone Six logs every firing and sends the curve to your phone.

Buy Cone Six, £249 See a firing
A domed clay kiln stacked with pale pots, lit in a dark room
Glaze firing, cone 6Kiln 1
1,202°C
+60°C an hour9 h 02 min
Cone 6 in about 20 minutesSent to this phone at 9 h 02 min

The curve against your plan

A glaze firing, segment by segment, the warning marked.

Glaze, cone 6Kiln 1, started 06:40, sample firing
0°C300°C600°C900°C0 h2 h4 h6 h8 h10 h cone 6, 1,222°C cone 6 due, 9 h 22 min warning sent, 9 h 02 min
Now
1,202°C
  1. Segment 1120°C an hour to 600°C
  2. Segment 2200°C an hour to 1,100°C
  3. Segment 360°C an hour to 1,222°C
  4. Hold10 minutes at cone 6

Cone 6 in about 20 minutes.

The warning from a sample glaze firing, kiln 1, sent at 9 h 02 min with the curve attached.See the curve again

Every bisque and glaze, logged

Peak, time and the whole curve, kept for each firing.

DateFiringPeakTimeCurve
10 Oct 2026Glaze, cone 61,222°C9 h 32 min
7 Oct 2026Bisque, cone 041,063°C8 h 55 min
3 Oct 2026Glaze, cone 61,219°C9 h 51 min
30 Sep 2026Test tiles, cone 61,224°C9 h 27 min
26 Sep 2026Bisque, cone 041,058°C9 h 04 min

What the curve was for

A loaded kiln is weeks of work at the wheel. The warning comes while there is still time to act.

An open kiln stacked with glazed blue and terracotta tiles on refractory shelves
A potter at a kick wheel among drying clay bowls, seen from above

Cone Six

£249

A kiln controller for potters and ceramic studios: every firing logged, the warning before the cone, the curve on your phone.