larathompson288

Hi there, I am trying to make some plates for my sisters wedding present and I have been running into a lot of problems! I am using Amaco velvet underglaze (fire to cone 5/6) on greenware - when they were fired for bisque (I put the underglaze on the greenware before the bisque) they came out ok (although still quite dark) but then i fired them for glazing (with transparent on top for glazing part as per instruction and to get glossy plate look) and they have come out very strangely - its almost as if some of the glaze has disappeared somewhere and it looks significantly thinner that it was after the bisque firing. Here is what I used: Clay: White Special Stoneware (1200-1300) Bisque fire: I am wondering what the reccomended bisque for this would be in degrees celcius eg. room temp - 600*C at 150*C per hour (I have sadly forgotten which bisque i had)? Glaze fire: I think I will try the following schedule: - room to 600 at 100 per hour - 600 to 931 at 150 per hour - 931c - 1031c at 60 p/h Do you think this would be ok? I would love to know if anyone had any reccomended glaze and firing scheudles for this clay and the amaco underglaze as I am keen to get the plates right as theyre for my sisters wedding! I am not sure if the problem is in my firing ramp or if because of the hire fire clay we have (sadly I dont have any others at the moment) THANKY YOU!

Thank you - this is really helpful. What temperate increase per hour do I use before the last hour when i do 60c between 931 and 1031? So, in terms of cones more generally, do they just refer to what to do in the last hour of firing? Thank you!

Hi there, I am making plates for my sisters wedding present. I am using Velvet Amaco Lead Free Underglazes and it says 'fire to mature cone 05-04. I have put it on fired stoneware clay and would like the colour to be as bright as possible. I am using a Nabethern Kiln and was wondering what cone 05-04 meant in terms of degrees celcius per time period ie. it would be great to know the firing ramp schedule as I am not confident in cones. If anyone could help I would really appreciate it, Thank you!