Skip to main content

Glaze fire - kiln opening

It's June 6, almost half way through 2015.  It's about low 20C during the day and around 10C at night.  It's perfect time to start the kiln.  :)

This is the 2nd glaze firing of the year.  I didn't take any pictures from the last glaze fire.  However, I did notice the temperature might a a couple of degrees too high for mysterious blue.  So this time around, I set the temperature 2F lower and also put mysterious blue pieces on the lowest shelf.  It seems to have worked out better.

After all these years of training, I am still anxious every time when I do a glaze firing.  What I meant is that during glaze firing, there is still a lot of uncertainty; like would the piece stuck on the shelf (glaze runs off the piece), would the piece develop crack while  firing, or would the colour of the glaze turn out to what I'd expected etc.  This time around, I was quite lucky.  There was only one casualty (one with S crack at the bottom) and the colour of a couple of mugs didn't turn out to what I imagined.  I would consider this a SUCCESS.  :)


Top shelf
Middle shelf 1
Middle shelf 1
Lowest shelf

Comments

Popular posts from this blog

It has been a busy first month of 2015...

It has been quite a busy month for me.  I've been doing some overtime at work but also managed to make new pieces (mostly mugs).  Also to fulfil my list last year, I made 2 teapots during the last few days of December and assembled them in January. I think they need to have a couple of teacups to accompany them. :) I will need to make a new lid for this teapot as the gallery is quite small for this teapot and the lid can easily slide into the pot.   I will be making bowls this weekend, hopefully I will have enough to fill the kiln soon.

Glaze and Chemistry (or should I say glaze chemistry)

Until last weekend, I wouldn't put chemistry and glaze recipe together, because I'd been just following the recipes and didn't think much about the reaction to the glaze between those chemicals.  But Ron Roy (the author of Mastering Cone 6 Glazes) workshop had totally changed my perspective.  It was a very informative session.  Ron showed us how to use INSIGHT and GlazeMaster to analysis glaze recipes and how we can fix it if there is a problem with it.  It was a bit like going back to high school Chemistry class and the chemical symbols....NaO, KO, CaO, Al etc...and my brain almost exploded at the end of the second day. :p I have now purchased INSIGHT and my plan is to put in all the glaze recipes I have now and see how stable they are in cone 6.  That should be fun. Inventory update: I managed to make my 6 pieces before the end of April.  They are mostly plates.  For May, I will be making mugs again. :)

Another disappointment :(

I was firing up my bowls for Ottawa Guild of Potters' annual event: The Great Bowls of Fire last night.  I made 7 soup bowls, was thinking to use them to try out different glazing techniques with Ron Roy's Black and Mysterious Blue.   When I was potting at the Nepean Visual Art Centre (NVAC), I had this lovely combination of NVAC's black with Mysterious Blue (as seen on the right).   However, I've been having trouble with the NVAC's black recipe, so I went with Ron Roy's Black.  It looks pretty smooth and all.  However, it just doesn't have the same effect as the NVAC's black and mysterious blue.  It's quite disappointing.  Also, I might have made too thick of a layer for the black, it cracked a little too.     notice the chip - this one is with the same technique as shown above) this one is done by pouring in mysterious blue on black Unfortunately, since the chipping is in the inside of the bowl, I can't tak...