[Shocking] Does Glaze Rot? Causes of Bad Odors & 3 Prevention Tips from Pros
"I haven't used this glaze in a while, and it smells funny..."
"The glaze color inside the bottle has changed..."
If you have experienced this, it might be a sign that your glaze is rotting.
"What? Do rocks and clay rot?" You might be surprised, but actually, if managed incorrectly, the contents of the glaze can spoil.
This time, we will show you shocking photos of "rotten glaze," explain the unexpected causes, and introduce three anti-rot measures you can do at home.
1. Photographic Evidence: This is "Rotten Glaze"
First, please look at a photo of glaze that has actually rotted.
Can you see that something green is growing, different from the original color?
When you open the lid, there may also be a foul odor.
⚠️ What happens if I use rotten glaze?
It is dangerous to think, "It just smells bad, so I'll put up with it and use it."
If you fire glaze that has rotted and deteriorated, it may cause the following serious troubles.
- Cracking (Cracks different from intentional crazing)
- Peeling (Glaze flakes off crumbly)
To avoid ruining the work you put so much effort into, you should avoid using glaze that has been allowed to rot.
2. Why does "Stone Powder" rot? The culprit was "Hands"
The raw materials of glaze, such as feldspar and ash, do not rot themselves.
So why does rot occur?
The biggest cause is the "Contamination by Bacteria".
Bacteria enter during glazing
When glazing, you might hold the piece with bare hands or put your hands inside the glaze. At that time, resident bacteria on your hands are transferred into the glaze.
If there is moisture, nutrition, and a moderate temperature, the bacteria will multiply explosively and cause the glaze to rot.
3. Protect your precious glaze! 3 "Anti-Rot Measures" directly from Pros
"So, do I have to use it up immediately once opened?"
No, that's not the case.
With correct management, liquid glaze can be used for a long time.
Measure 1: Exchange the "Top Water" (Most Effective!)
Bacteria multiply in water. By regularly replacing the water, you can reset the bacterial growth.
- After using the glaze, let it sit for about 3 days without moving it.
- The glaze components will settle to the bottom, separating from the top water (supernatant).
- Discard only this top water and add fresh tap water.
Just doing this will suppress bacteria in the glaze to some extent.
Measure 2: Store in a Cool, Dark Place
Bacteria love warm places. It is dangerous to leave it by a window in direct sunlight or in a heated room.
By storing it in a cool place (dark place) as much as possible, you can suppress the activity of bacteria.
Measure 3: Add Sterilizer (like Milton)
It is also effective to add a small amount of sodium hypochlorite-based sterilizer, such as "Milton" used for disinfecting baby bottles.
(*Since adding too much may affect the glaze components, please start with about 1cc per 1L)
Summary: Care for your tools creates good work
Glaze is not just a material but delicate like a "living thing."
Change the water after use and let it sleep in a cool place.
Just by giving it a little affection, the glaze will always respond with the best performance.
Fukaumi Shouten's liquid glazes are manufactured in a hygienic factory, but after opening, customer management becomes important.
Please use it for a long time with correct knowledge.
Fukaumi Shouten Liquid Glaze Collection
Manufactured in a hygienically managed factory. Easy-to-use small bottles are also available.
We deliver professional-quality glazes in a stable condition.
