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Dripping Kyusu

design tea ease of use

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#1 Tyler Miller

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Posted 19 August 2014 - 11:54 PM

I recently made some side handled teapots.  I was especially inspired by Hagi kyusu I've seen.  I really like the form. Example here: http://www.artisticn...ishiteapot1.jpg


The ones I've made, however, drip like CRAZY.  I thought I was pretty faithful to the original forms, though I'm willing to admit my spouts are slightly lower.  Do I need to refine the spout's lip further?  Angle the spout more upwards?  Is the shape of the body wrong?


Is there something I'm missing or is this style of teapot just inherently drippy?  I've heard people complain about traditional Japanese teapots dripping terribly.  Bizen hobin especially.


Here are two of mine, fresh from failed pour tests:


Attached File  drippyteapots.jpg   230.26KB   7 downloads

#2 Mug


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Posted 20 August 2014 - 06:50 AM

Hi Tyler


It looks like Hagi kyusu's Spout tip is more flattened and outward.

Your tip looks to be pointed upwards.


I would do what you did, and then pull the tip out a little flatter with your finger and see if that helps.

#3 Pres


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Posted 20 August 2014 - 08:03 AM

In the design of pitcher pouring spouts, a curve in the spout causes a withdrawal of liquid from the pouring edge. This is evident in the Hagi Kyusu example. You will also see that even though the glaze is thickening the edge a bit, did have a thinner edge not as rounded as yours. The design of a pitcher type spout is based on a lot of factors, and has been approached in several different ways.

Lots of variation occurs in the shape of the pouring edge, with some people using a sharp edge to cut the flow, some using a squared edge with sharp upper to cut the flow, and others using a double edge where one cuts the flow and the bottom catches any drip. However, most successful pitchers have a breaking curve in the spout to retrieve the flow when the pitcher is moved back to vertical.

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#4 Diesel Clay

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Posted 20 August 2014 - 09:51 AM

I think the body shape and positioning of your spout are fine. I notice on your inspiration image the spout is still wider at the base than at the lip, just like a more conventional spout. Exaggerating this constriction a bit more in yours would create more velocity that would help with the pour. I concur the lip needs to be sharper somehow.

#5 Tyler Miller

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Posted 20 August 2014 - 05:08 PM

Thanks for the help!  I'll definitely be putting your suggestions into practice.

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