The clay must be fired in order for it to be waterproof. Adding more water will just make the clay softer.

So my kilm finnaly broke down. Is it possible to bake this? How fragle will it be if its just air dryed?

If your kiln broke you have nothing to loose by baking it. I'm not sure how long to bake it or how high. I would Google search it. It dries very hard in the kiln.

Can I fire this to 1400F?

You need to fire to Cone 5 (2118 Degrees F)

Can this be used to make an ashtray?

It can be used to handbuild or on a pottery wheel bu for this clay to harden it has to be fired to around 2185°F and this requires the use of a kiln. I would think you would be better off using an air dry clay and then painting the piece with acrylic paint.

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5lb Pottery Clay: Best Mix- BMix - BMX - Mid Fire Cone 5-7 - Rocky Mountain Clay

5lb Pottery Clay: Best Mix- BMix - BMX - Mid Fire Cone 5-7 - Rocky Mountain Clay

Product ID: 94405194

Details

Brand
Rocky Mountain
Color
Gray White
Age Range (Description)
Adult
Material
Clay
Item Weight
5 Pounds
Number of Items
1

🎨Smooth white, glaze-friendly

🔥Mid fire Cone 5-7 range

⚖️5lb perfect working batch

AR$161008

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Elevate your craft with the smoothest mid-fire clay on the market!

OPTIMAL MID FIRE PERFORMANCE - Fires beautifully at Cone 6 for durable, vitrified stoneware with a stunning white to light gray finish.
VERSATILE GLAZE COMPATIBILITY - Accepts a wide range of glazes and underglazes without crawling or pinging, ensuring flawless finishes.
NON TOXIC GLUTEN FREE FORMULA - Safe for artists prioritizing health and eco-conscious materials in their creative process.
RELIABLE CONSISTENCY CUSTOMER SUPPORT - Consistently moist with minimal cracking during drying, backed by responsive Rocky Mountain Clay service.
EFFORTLESS WHEEL THROWING HAND BUILDING - Silky smooth texture designed for both beginners and pros to shape with ease.

Rocky Mountain Clay's BMX 5lb Pottery Clay is a premium mid-fire stoneware clay, firing best at Cone 6 to a smooth white or light gray finish. Perfectly balanced for wheel throwing and hand building, it offers excellent glaze compatibility and a non-toxic, gluten-free formula. Trusted by thousands of potters for its workability, durability, and consistent quality, this clay is your go-to for professional and creative pottery projects.

Specifications

ASIN	B07JNG8KKH
Age Range (Description)	Adult
Age Range Description	Adult
Best Sellers Rank	#12,343 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #74 in Pottery & Modeling Clays
Brand	Rocky Mountain Clay
Brand Name	Rocky Mountain Clay
Color	Gray,White
Customer Reviews	4.5 out of 5 stars 1,414 Reviews
Educational Objective	Creative Skill, Dexterity, Hand-Eye Coordination
Item Weight	5 pounds
Manufacturer	Rocky Mountain Clay
Manufacturer Part Number	5BMX57
Material	Clay
Material Type	Clay
Model Name	BMX
Model Number	5BMX57
Number of Items	1
Other Special Features of the Product	Non-Toxic
Recommended Uses For Product	Pottery
UPC	751659432048
Unit Count	5 Count

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