What are the interior dimensions?

The interior chamber is approximately 6" x 6" x 6" Thank you!

can I use it to temper and harden steel ?

Probably. I am a glass artist and use this kiln for annealing art. This kiln can achieve 2200f, but you shouldn't push it above 2100f per manufacturers recommendation. The big thing is the size. I'm not sure how much steel you wish to temper, but the interior of this kiln is very small, one of the smaller available in fact, so keep that in mind when deciding. This is an amazing kiln however. I've owned two now. Probably the coolest feature is how insanely fast it heats up. I've never timed it, but I am pretty sure mine can hit 1050f in under two minutes with the door to the kiln closed ( I let it idle with the door open often, so I can garage projects). It is extremely portable. The Nintendo Gamecube of kilns, it even has a cool little handle! Plugs right into a standard wall socket, and needs much less clearance than other kilns (Mine just sits on the corner of my workbench). If this kiln will work for your needs, it is an easy buy in my opinion.

how big (ounce wise) of a crucible can fit into this furnance?

The Rapid Fire Pro has a 6" by 5" by 6" firing chamber. Whatever crucible you want to use that will fit in a space that size will work. This unit does not come with a crucible.

Where do I find a shelf for this kiln?

First off it comes with one, if you need another it needs to be 4-7/8" by 3-3/4".

Tabletop Rapidfire Pro L Standard Furnace

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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NZ$2321

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Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 RapidFire Pro-L: Ignite your creativity anywhere, anytime!

COMPACT POWERHOUSE - Weighing just 12 lbs, this kiln is your on-the-go creative partner without sacrificing pro-level performance.
SPACIOUS YET PORTABLE - Generous 6"x5"x6" firing chamber fits small to medium projects, perfect for artists who demand versatility.
LIGHTNING FAST HEAT UP - Reach blazing 2200°F in under 10 minutes with RapidHeat tech—cut downtime, boost productivity.
PRECISION DIGITAL CONTROL - Digital panel and coiled resistance wire deliver exact temps for flawless jewelry, metal clay, and glass work.
MADE IN THE USA BUILT TO LAST - Raw steel body ages with character under heat, backed by expert support and a 90-day warranty.

The RapidFire Pro-L Portable Digital Kiln Furnace is a lightweight, 12-pound electric kiln designed for jewelry making, metal clay, enameling, and glass fusing. Featuring RapidHeat technology, it reaches 2200°F in just 8–10 minutes, housed in a durable raw steel body with a spacious 6"x5"x6" firing chamber. Equipped with a digital control panel for precise temperature management, it operates on a standard 15 Amp circuit at 1500 watts. Proudly made in the USA, this kiln offers professional-grade performance in a compact, portable form factor ideal for artists and hobbyists seeking efficiency and reliability.

Specifications

ASIN	B00L0OTDYE
Best Sellers Rank	#455,581 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #682 in Jewelry Casting Tools
Customer Reviews	3.8 3.8 out of 5 stars (45)
Date First Available	June 15, 2014
Item Weight	12 pounds
Item model number	FUR-0056
Product Dimensions	8 x 7 x 13 inches

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