Linchimb
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Hi, has anyone experienced rippled / distorted stoneware plate after glaze firing? The plate was thinly cast using stoneware casting slip. Bisque looked fine. I placed it quite close to the kiln wall which might have caused some stress…the plate didn’t break and I’m wondering whether it will eventually break at some point or is this type of rippling kind of permanently settled. The distortion on the upper and bottom side is somehow symmetric. thanks very much.
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Temmoku glaze shivering and crawling on stoneware
Linchimb replied to Linchimb's topic in Clay and Glaze Chemistry
I see! Thanks for the advice. The crack doesn't feel very sharp -
Temmoku glaze shivering and crawling on stoneware
Linchimb replied to Linchimb's topic in Clay and Glaze Chemistry
Hi, the rim is reasonably round on this one. I have seen glaze running downward and not covering rim well on some pieces with thin sharp rim. Saying that thin rim on porcelain sometimes works quite well with glaze, maybe because it’s more dense, smooth and can be vitrified (?) the kiln was actually opened at room temperature. I let it cool down naturally after reaching mature temperature and didn’t slow down cooling. -
Temmoku glaze shivering and crawling on stoneware
Linchimb replied to Linchimb's topic in Clay and Glaze Chemistry
Thanks! I just did the freezer to boiled water test and it seems fine. Also did the hot to ice test. And knocked the rim with steak mallet. Nothing happened. One thing I forgot to include in my original post is that yesterday it also cracked on the inside of the cup underneath the chip on the rim. -
Temmoku glaze shivering and crawling on stoneware
Linchimb replied to Linchimb's topic in Clay and Glaze Chemistry
Thanks Peter. I just tried this ice-boiling water test and it seems fine. I might put it in the freezer and see what happens. -
Temmoku glaze shivering and crawling on stoneware
Linchimb replied to Linchimb's topic in Clay and Glaze Chemistry
Hi Bill, thanks for your reply. Actually in John Britt’s book this is a cone 10 glaze and I was thinking whether I under fired….it is very glossy. Maybe I can try a different firing schedule and temperature. I thought crawling is the opposite of shivering and I was puzzled to see both happening at the same time. maybe the crawling was due to glaze application since temmoku type of glaze needs to be applied fairly thickly and in some areas it’s probably too thick. -
How to re-tighten the bolts on Shimpo RK-55
Linchimb replied to Linchimb's topic in Equipment Use and Repair
Thanks everyone for your kind advice and suggestion. I tool the blue cover off and noticed that the square metal plate, the spring and belt were all loose. I put them back in place and hopefully the wheel will be working again! -
How to re-tighten the bolts on Shimpo RK-55
Linchimb replied to Linchimb's topic in Equipment Use and Repair
Hi, Yes I contacted them again but they said they are getting minimal information from Shimpo. They could arrange to pick up my wheel and send to Potterycrafts who's the importer of shampoo wheels and ask them to take a look....... -
New Shimpo RK55 VL Lite making rhythmic noise
Linchimb replied to Linchimb's topic in Equipment Use and Repair
Thanks Hulk and Bill. Yes the other side has a square metal plate which holds the bolts in place. The spring is also attached to this part. And the belt also fell off...I put all of them back on now! hopefully this won't cause any issue in using the wheel -
Hi, I am testing the 'Hamada Rust' temmoku glaze on a stoneware clay body. Fired at 1250 with 30min soak. Can a glaze both crawl and shiver? On the base it looks like it crawled showing bare clay but on the rim it looks like it shivered with a small chip (although I did drop it on kitchen table, not sure if it chipped from that)....would really appreciate any suggestions for troubleshooting! The glaze pings a bit after firing on my shelf and eventually settles at some point. I haven't noticed any shivering before on slip cast bodies. Here's the receipe: https://glazy.org/recipes/2967 I used Potash Feldspar instead of Custer Feldspar and Gillespie Borate instead of Gerstley Borate. And how do you test for shivering? On digitalfire it says shivering can be delayed, then I am wondering how would you test for delayed shivering if it can happen at any time after firing? Many thanks!!
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New Shimpo RK55 VL Lite making rhythmic noise
Linchimb replied to Linchimb's topic in Equipment Use and Repair
Thanks Bill. I will remove the back cover and check the belt. I took the four bolts out underneath the splash pan which was a mistake…now trying to figure out how to re-tighten them….if you have any ideas please let me know. Thanks very much! -
How to re-tighten the bolts on Shimpo RK-55
Linchimb replied to Linchimb's topic in Equipment Use and Repair
Hi, I just loosened them like normal bolts…they had some tension/spring in the main body according to user manual. -
Hi, I have loosened the bolts of shimpo Rk-55 but not sure how to re-tighten them. Can anyone shed light on this? Really appreciate your help!
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New Shimpo RK55 VL Lite making rhythmic noise
Linchimb replied to Linchimb's topic in Equipment Use and Repair
Thanks everyone! Does anyone know how to take the wheel head off? The supplier has suggested taking the wheel head off to add a bit more grease to the metal disc but I can't find any video online showing how to grease the disc inside the wheel..... Many thanks! -
Hi, I have recently purchased a new shimpo rk55. It makes a rhythmic noise when it spins fast. Has anyone encountered similar issue? Many thanks!! Can’t seem to inset video - here’s the link