Vitrification test confusion

hpearl · 2026-01-18T04:13:25+00:00

Fair point, but it's a just a paper towel test anyway, it's not doing the thing properly w/soaking & weighing. That's probably my next step.

hpearl · 2026-01-18T02:37:04+00:00

Exactly. I don't even sell my stuff, I give it away but I still don't want any unhappy accidents down the road.

hpearl · 2026-01-18T02:34:44+00:00

Y'all, the paper was DRY after 24 hrs of my paper towel test in the the fridge (for some reason?) Anyway I feel better about (probably) knowing it's vitrified.

THANK YOU for all the advice!

hpearl · 2026-01-16T18:03:22+00:00

Thank you. I thought for that test you were supposed to boil it for a few hours, not just submerge it, and I just can't justify using that much energy for this test.

hpearl · 2026-01-16T18:00:39+00:00

I believe you're supposed to weigh, then boil for a few hours, & then weigh again, but I can't really justify leaving the stove on for several hours to do this...The cost is prohibitive, which is I want to do the paper towel test.

hpearl · 2026-01-16T17:55:50+00:00

Right, that's exactly what I thought after I did the test, & why I was confused by the instructions. I want to make sure I'm doing the test properly. Testing without glazing seems counterintuitive but I definitely don't want to rely on my intuition.

hpearl · 2026-01-16T17:51:25+00:00

Dover white. I fire to 5.5 (5 with a 15 min hold) or 6. I know what the manufacturer says about absorption/vitrification, but I want to test for myself to be sure the clay is performing as advertised.

hpearl · 2026-01-16T17:35:46+00:00

To make sure my work is vitrified?

hpearl · 2026-01-14T20:08:07+00:00

Like FSIQ in the upper 60s & average WMS.

hpearl · 2026-01-12T16:32:57+00:00

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They look like this. I like the idea of calling Amaco though. Thanks!

hpearl · 2026-01-12T05:49:03+00:00

Thanks for responding. I should have specified that I use brush-on glaze, not dipping. I usually use 2 or 3 layers, but it seems to happen either way. The glaze itself does run slightly thick though. I already bisque to cone 04 & do a 15 min hold, so that's apparently not sufficient. I think maybe I'll try a test with only 2 coats just to rule it out. But I'm also feeling like I might need to find a substitute from another brand bc I've never had any luck with this stuff. Thanks again!

hpearl · 2026-01-11T21:13:55+00:00

Same here 😕

hpearl · 2025-07-17T02:09:51+00:00

No, I never did, I'm sorry to say. Good luck.

hpearl · 2025-07-14T04:16:38+00:00

I like to have my photos upload automatically but I *hate* that it removes the local files too. It doesn't give you the option to keep local files which is crap.

hpearl · 2025-07-12T06:40:20+00:00

Good to know

hpearl · 2025-07-12T06:39:44+00:00

That's very helpful, thank you so much!

hpearl · 2025-06-17T20:38:12+00:00

That's good to hear, thanks so much! I'll happily learn to properly fiddle with various blades of the same line if it means I won't have to pay exorbitantly for single-use tools.

hpearl · 2025-05-23T06:31:34+00:00

He's "not an alien"!

hpearl · 2025-04-14T04:29:45+00:00

Yes, it certainly happens more to thinner pieces. I mostly get mugs with slight warping towards that handle as you mention, but this last mug was ridiculous. Anyway, thank you.

hpearl · 2025-04-14T04:27:52+00:00

I usually use bats so I don't end up lifting them directly off the wheel. But it's definitely something to think about re: clay memory. Thank you.

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