The firing was another great learning experience and a success!

The students are fabulous at problem solving.  Alexandra took her knowledge of wood burning stoves to set up a schedule for the second team to mix the oak and the scrap wood for optimum heat and then for the third team, Monique designed a sandwich of a layer of poplar or pine, then oak, and then a layer of poplar and pine again.  The temperature rose nicely but stalled and then we used only a mixture of poplar and pine to finish the firing.  Ms Zhang cannot wait to open the kiln; she noticed all the beautiful colours in the ember bed.  And once again we are all grateful to Keith and his table saw and Matt for bringing batteries that worked for the Oxyprobe.  All of the students showed up and the first entry in the log book showed that the temperature today was warmer than when we fired in October.  The wind wasn’t a problem either.  The only nuisance was the damp.

Wool really helped!  There was food and laughter and well…did I say blessed?  We will open the kiln together on Friday but it is hard to wait.  Oh, and leave it to Monique – she decided to burn an entire pallet!

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Loaded! And Ready to go…

The students in the wood fire class at the School of Art fired their first kiln load a month ago.  It was so cold that day and the wind just whipped through our coats right to the bone with a sharp chill.  It is hard to believe but it will actually be warmer in Winnipeg tomorrow when this kiln is fired.  How many times have I said that we are blessed?

The students did a great job.  Julia cleared the entire kiln courtyard of snow before Monique and Kendra started loading.  Jiawei, Kewan, and Hyounjung helped to sort all of the work and everyone pitched in wadding work if it needed it.  We loaded the kiln keeping in mind that The Laidback Wood Fire book by my friend Steve Harrison says to place the bag wall in the front.  Markus Bohm puts it at the back and in the end Steve has abandoned a bag wall altogether and gone with a tight stack in the middle.  Ours is a combination of all of those.  Pots were placed in the extended throat to slow and move the flames about.  Kewan’s arches are helping to keep the flames contained on the floor at the back and on the first shelf.  We listened and did not load the top as tight as we did before and there is room all around for the flames to travel.  Fingers crossed.  These students have worked hard and learned a lot – although I doubt if they fully comprehend all that they have learned yet.  Sara, Anastasia, and Alexandra put the finishing touches on bricking up the door.  It all starts in the wee hours of the morning when Sara does the gas pre-heat.  Stay posted…firing pictures to follow on Sunday.  We unload the kiln on Friday with high hopes.

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Those fabulous students preparing for the wood fire on Saturday, December 1

Those of you who have read my blog on a regular basis might be getting tired of me telling you of the great blessings I have had or the fantastic students that have come my way this term but, both are true.  Yes that first firing went 50% as planned but gosh did we ever learn a lot.  The weather was good to us and each of us quietly hoped that there would not be an Arctic freeze during the second firing.

On Friday, November 23, it was +2 C.  That day the students helped the ceramics tech, Chris Pancoe, with sorting, cutting, and stacking the oak slabs for the firing.  For safety reasons, Chris graciously took on the chain saw so that no student got hurt despite the fact that he was trying to get everything perfect for us as he and his wife, Jennie, were leaving for Sweden to build one of the ice hotel rooms in two days time.  Congratulations to the two of you and hopefully you will have a fantastic adventure.  Monique Chartier-Kroeker and Anastasia Waly helped Chris along with Hyounjung Lee who had, until that instance, never handled a shovel.  She enjoyed clearing up that sawdust!  Great work all of you.  Inside the sculpture building, Alexandra Ross was on the chop saw helping get the pre-heat wood ready to go.

So far, the two firings in the kiln have used Poplar logs so this is going to be new to all of us as no one has used hardwood planks before.  We have oak and the slabs are big and dry.  Chris welded us a grate so that we no longer have to depend on logs and I am hoping that the hardwood doesn’t cause us to have too much of an ember bed that it blocks the flue.  We will just have to keep our eyes on that!

Did I say that Monique discovered that the features of the oak slabs were really interesting?  One piece of wood even came inside the studio to be the mascot for the firings despite the fact that there was a debate over whether it was a ‘moose’ or a ‘rabbit’.   No clinical psychologists around to analyze the meaning for those choices so all is well!

Inside Zach Dueck and Kendra Wile helped mix up two of the favorite class glazes – Haystack Green and Tin Purple while the others glazed their work and wadded the bottoms of their pots for loading this coming Friday.

Over the course of several more firings they will find their way balancing the naturalness of the wood firing and ash with their need for colour.  But no one wants ugly brown pots according to Paul Davis’s definition.  We are all looking forward to how the new Nuka glazes using the ash from the second firing and some new shinos come out in this firing.  Julia Beazley, Kewen Qiang, and Yijia Zhang were putting the final touches on their new bisque pieces for the firing in our glaze room.

We will keep you posted on how it goes….Sara Berg will light the gas burner to pre-heat the kiln and chimney at 3am Saturday and hopefully the rest of us will have a ‘laid back’ wood firing and be finished by 11pm. This time we will not run out of wood and those darn cones will bend and the pyrometer will work!  Since there is so much salt build up we may just toss a little extra in!  Stay posted for action shots beginning Friday night!

The Learning Kiln, Round 1

I haven’t added anything to this blog since the beginning of the term but, it is now time to once again praise a great crew of people.  The students from the first Wood Fire Class at the School of Art:  Jaiwei Dai, Julia Beasley, Kendra Wile, Kewen Qiang, Monique Chartier-Kroeker, Sara Berg, Yijia Zhang, Zach Dueck, Anastasia Waly, Alexandra Ross, and Hyoungjung Lee – in no particular order.  I would also like to thank a former student and Ceramics Club co-president (with Selena Panchoo), Donna Garafolo, and a current student in another class who came to help and really did, Keith Barber.  Of the eleven students in the class, only two had ever fired a wood kiln. The learning kiln did everything that ‘it’ was supposed to do.  If a university is about learning and problem-solving and if woodfire is about building community, teamwork and collegiality then this firing was one of the most successful I have ever been a part of.  I would be proud to fire with any of these respectful, hardworking, and tenacious individuals and I am looking forward to another firing before the end of the term with this teamIMG_0365IMG_0374IMG_0380IMG_0385IMG_0391IMG_0394IMG_0399IMG_0407IMG_0409IMG_0413 if we can procure dry logs of the right length and diameter.

While I would like to be showing you amazing pictures of lovely glazed work this morning, I can’t.  We ran out of wood at cone 3 after using up every available piece of wood and borrowing a table saw from Keith and a chainsaw from Donna.  The Oxyprobe worked brilliantly.  Students learned how to translate numbers into reducing or oxidising and even neutral atmospheres inside the kiln.  They were, however, disappointed at not having bellowing black smoke go everywhere – the kiln is, after all, a smokeless one.  They learned about building a proper ember bed and not blocking the flue, about ‘stoking on the hobs’ – even the word was like one from a totally foreign language – hobs, what are hobs?  Oh, those are the hobs!  It is interesting, as a teacher, to find that actually doing something is more of a learning tool than reading and talking about it (a bit like reading how to put a diaper on a baby and then being presented with a real child)- especially when most of the students do not know the language of wood firing.  The majority did not know what an ember was nevermind an ember bed.  They do now!

These students did everything right according to Steve Harrison’s Laid Back Wood Firing and Markus Boehm’s instructions in the summer.  They pre-heated the kiln with gas (thanks Sara from coming out in the middle of the night) and then started using sticks and branches to start the ember bed before going full fire on the floor.  They built one of the most beautiful ember beds I have seen in a long time.  They went to the hobs following the schedule in Steve Harrison’s Laidback Wood Firing – a book that I will now require for this class in the future.  But it was there with them at every moment.  And the temperature rose slowly not to warp or dunt the pieces inside.  One of the surprises to them was one that caused a moment of problem-solving.  The flames which had been ‘going down’ in the Bourry Box began to look like a ‘campfire’ – they were coming up.  When we ran out of dry suitable wood, they attempted to use some cut off slabs (remember I said they didn’t want to give up) and one of these blocked the flue into the main chamber for a bit.  Back on track they built up their ember bed, went back to the hobs, and then got to full-blown fire resulting in reduction.

Harrison lists the possibilities for a stall and we carefully examined page 14 and his list.  We ruled out not enough ember pile to preheat combustion (see feature photo with logs on hobs), going to the hobs too quickly (we followed the medium length firing schedule in the book), top of the firebox was hot enough, and we had good dry pieces when we went on the hobs (again see above).  The firebox design was made for one-metre poplar logs and worked well at the first firing.  And the students did not forget to clam up the bottom stokehole door.  This left us with two choices and they were the two culprits that defeated us at cone 3:  too big a cross-section of timber because of the large mass it took too long to reach the flashing point and that wood was wet.   We sealed up everything and cleaned up.  The area looked fantastic due to their efforts.  And, in the midst of all of this, we also did a raku firing.

So I want to repeat something because I do not want anyone to consider this firing a failure; it is not the student’s fault that the wood we had available to us at a crucial juncture was too big and too wet.  This is a learning kiln and if University is about learning and problem-solving, then this firing was 100% successful!  I do not want the students, or anyone, to think that a kiln full of beautiful glazed ceramics is ever the only goal.  If this firing had gone perfect, I actually suspect that the learning aspect would have been minimal.  We, me and the students, are humbled along with all other wood firing potters, even Steve Harrison, who have had issues firing their kilns.  I suspect that that is what, over the years, inspired Harrison to write his book so that we could learn from his experience.  Next time we are going to measure the diameter of the logs and their length.  I would give anything for the tool to measure the wetness of wood.  We will have our own chainsaw (and gas – thanks again, Donna and Keith).  We will, once again, check what to do in the ‘Harrison Bible’ and the firing will result in lovely glazed cone 12 ceramics.