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Member Since 12 Oct 2012
Offline Last Active Mar 07 2015 12:00 PM

#65280 Wood-Fired Turbo Kiln

Posted by Kohaku on 28 August 2014 - 10:27 AM

Thanks guys. Our group is currently engaged in a pretty intense discussion about what we want here... whether it's simply a platform for hi-fire reduction firing (in which case- maybe we should just invest in a gas kiln) or whether we want to experiment with alternate surfaces.


These are really helpful suggestions.

#64739 What Are You Working On?

Posted by Kohaku on 19 August 2014 - 05:37 PM

Well... my current 'thing' is that I just started an MFA. It's an integrated Art and Design program... so I'll probably be venturing into some intensive integration of clay and other media. Pretty exciting, to be honest.

#64736 Raku Tiles In The Shower

Posted by Kohaku on 19 August 2014 - 05:21 PM

Thanks for all the feedback and commentary.


We've been re-doing our own shower- so I decided to go ahead and use myself as a guinea pig. Here's the installation... time will tell. I hope that with the maturation temperature of these glazes and the reduced splash on the back wall, I might be OK. Not sure I'll ever go this route with a customer, however.




I'm also taking a couple extra (failed) tiles and running some accelerated tests, in line with Min's suggestions above.


There was a really good discussion on Digi-fire about Raku and fading... the glazes I use are formulated to avoid the classic copper-luster fade... so I guess the real questions relate to mildew and other moisture-related issues.


Interestingly- these are the same glazes as in the photo on top of the thread... gotta love Raku. Colby- I am throwing the tiles... too much fracturing with a slab roller in my experience.

#47920 Extruder - Worth The Money?

Posted by Kohaku on 15 December 2013 - 05:24 PM

There is a machinist who sells extruders on eBay for considerably less than most commercial extruders.

That's where I bought mine. I have been very happy with it so far, although I don't use it super often or for very complex jobs. It does the jobs I need it to and at the perfect price.



Oh Canada!!


<Updates Christmas list>

#46152 Burping Raku Pots

Posted by Kohaku on 19 November 2013 - 04:37 PM

not recommended for all, so many variables in the clay body, etc, whatever floats your boat!


I've got no systematic data to back this up... but I've observed enhanced color response in pots that I've burped. You still get the vivid reduction effects (coppers, reds, etc.) but somehow the range of background color... especially copper blues and greens... seems markedly improved.


Could be coincidence, I guess...

#45501 What Do You Do With Your Pottery 'seconds'?

Posted by Kohaku on 11 November 2013 - 11:15 AM

If you do choose to glue that fish platter, you can add some black iron oxide to D/E 3000 glue and it will appear like a raku clear glaze crack.


Currently repaired using urushi laquer... just waiting for the bond to finalize so that I can apply the gold powder.


Incidentally... I used the hypo-allergenic urushi, wore gloves, rubbed vasoline into every exposed surface... and still earned myself a poison ivy-esque rash. Nasty stuff!

#44935 Fyi Re: Purloined Intellectual Porperty

Posted by Kohaku on 31 October 2013 - 11:21 AM

The points made by Mr. Bill Harrison, within the comments at the link that Weeble posted, are a good read.


Thanks for referencing this. I've definitely used a couple photos as direct inspiration for designs in the past (easy to do when you work with wildlife themes). I'll need to be more careful in the future.

#43943 Wedging Vs Coning Up And Coning Down

Posted by Kohaku on 09 October 2013 - 08:32 PM

I'm a big fan of cut and slam for getting rid of bubbles. You can take a slagged mass of recycled clay with dog hairs in it, and it'll be throwable after 30-40 cycles.


I usually do a brief spiral wedge just to get the clay into shape.


Coning- for me- is mostly about centering and achieving allignment in the clay mass, not about getting rid of bubbles.

#43942 Destruction Of Publicly Owned Artworks.

Posted by Kohaku on 09 October 2013 - 08:28 PM

Mordor lives.

#42783 Saggar Firing

Posted by Kohaku on 17 September 2013 - 07:54 PM

I was Raku firing this weekend. Just for the heck of it, I ran off a small sagger and a test pot. I glazed it with my usual Raku glazes, packed the pot in paper in the sagger, and ran it through the Raku cycle.


The Sagger suffered a crack... so it's not a really definitive test. However, a few interesting observations.


1) Heavy reduction, even with limited combustibles and some modest exposure to oxygen.

2) My copper-based raku glaze- usually turquoise to red, came out looking like Oxblood (interior of pot).

3) A white crackle glaze that I put on the exterior carbon-trapped like crazy

4) None of the unglazed surfaces came out smoked... except on the based, where the oxygen flow was presumably cut off. So- it does seem like it's possible to smoke a surface, even without post-fire reduction.



Anyhow, I think this merits some further experimentation.



#39552 Proportions

Posted by Kohaku on 25 July 2013 - 10:12 AM



can you make or place something in catch basin  that will make sounds,   light weight ceramic pebbles?, hydroton? it will a least increase the splash quality

different sized holes in inserts some concex some concave

tell that customer to by some water front property, buy him a cd of a babbling brook

you didnt lose a sale,  the piece will go to a better owner



The pebble idea is actually somethig I've played with- maybe a use for some of those ceramic shards I'm going to generate using a tumbler.


I agree on general principles about the customer's attitude... except that I tend to agree with her critique. Trying to enhance the sonic quality of these things is something that's interested me for sometime.


On another note- I've been cranking some raku lately, and some of the pieces I posted in raw form are finished. Here's one of them...



#38450 What Do You Do With Your Pottery 'seconds'?

Posted by Kohaku on 08 July 2013 - 02:00 PM

To the shard pit with em'. 


IMO....... selling seconds can de-value your other work....and once the piece is out of your hands...... it is representing you out in the world.  You sell it to someone as a second... and they then give it as a wedding gift to someone....... and you can BET they will not mention it is a "second" in that context.


Potential long term loss for short term gain.


Price the firsts to make up for the seconds, thirds and so on.  And work get your process controlled so that the percentage of less than firsts is very low.







Just to test this general 'smash'm' notion a bit....


I make raku plates with etched designs. These are pretty finicky- all stages included, it takes about 2 hours to generate one of these. Failure rates in the raku firing run about one in three or four.


Given that these pieces are inherently decorative (no functional use possible), and that 'cracking' is sort of inate to the asethetics of raku... what would people think about carefully mending and selling one of these?



#38421 Confession Of An Amateur

Posted by Kohaku on 08 July 2013 - 09:36 AM

A few days back, I left one of my pastibats in the sun by mistake. Nice warp in the middle.


Anyhow, I was working through an 'end-of-the-day-gotta-get-one-more-thing-built' crisis. I threw the warped bat on the wheel. Half wasy through the centering process, it slipped off the pins. Bat and clay went spinning through the air like a UFO and smashed a window, nearly killing my landlord's chicken in the process.

  • TJR likes this

#37519 Proportions

Posted by Kohaku on 22 June 2013 - 06:59 AM

Here's another image (by the way- I'll be back from Ecuador on the 30th, and will actually fire some of these things).

I've done minimal slab work, so this was a bit of a stretch for me... but I wanted to build a table-side box lantern. People may have noticed that I've been on a 'thrown doughnut' binge of late... thus the handles and the base.

My one initial thought on this one is that the handle should have mirrored the base a bit more...

Posted Image

#37432 Triage for applying to shows

Posted by Kohaku on 20 June 2013 - 02:30 PM

Here's an example of a show I'm considering applying to.


I'm impressed with the quality of the past shows, and the theme of the current show (expression of nature in art) relates to the wildlife and marine imagery that I use on a number of my pieces.

They do include 'wall sculpture' in the prospectus, so I'm considering sending a couple of mosaic-style plates. I enjoy making these (here's an example that fractured in a recent firing).

Posted Image

On the down-side, it's way the b'jeebus down in LA, there isn't a clear ceramic focus, and it's another $35 out of pocket.

Just one of many similar decisions I'm struggling with... curious as to what people think.