Tunnel kiln a bungli masa hte masat masa ni:
Hka htung galu ai: metre 160
Kiln mawdaw langai hta hka htung jahpan: 6x4x4=96
Bungli galaw ai masa: Nta kata na nbung katsi ai kaw nna 1150℃Celsius du hkra na lu na matu hkying hkum 24 ra ai Insulation aten: 1150℃X72 hrs. hrs aten la ra ai. 1150℃kaw nna 400℃du hkra katsi mat na matu Lahta na 120hrs.
Cycle hku sawn la ai,dai gaw 120 hrs aten la ra ai ngu ai lachyum re. Kiln mawdaw hpe kiln kata de shang pru wa na matu, dai hpe laning mi hta kalang 60 daram lang ai ngu tsun ai, dai crucible hpe kalang 300 lang lang na matu masing jahkrat da ai .
nbung kata na nbung hpe mu lu ai. Nbung gaw 5% rai nna ngam ai gaw carbon monoxide gas hte nbung hpe shayawm ya ai .
