Product Details

Product Information

The Firebox 8 is a side firing kiln, with the elements in all four walls for an even firing.  The lid itself is a lightweight brick construction coated with refractory cement. It has a cool-touch handle. The chamber is also made from lightweight brick, which is used because it is able to expand and contract as the kiln heats and cools. It also helps reduce the overall weight of the kiln. The whole kiln is set on sturdy metal feet.

The kiln comes with a 2-year warranty.

Why buy a kiln from Warm Glass?  

We have an experienced team who will support you every step of the way, including free technical help if you need it. Call us on 01934 863344, and we will find the best setup for you. If you find this kiln cheaper elsewhere, please contact us and we'll do our best to match it. 

Special features:

  • The excellent LT Controller
  • Full accessory kit, including- stand, kiln shelf, 3 shelf props, kiln wash (200g) and firing paper.

For advice on choosing a kiln, visit our Glass Kiln Advice Page.

Technical Specification

Electrical: 1.73kw/7.5amp single phase, UK standard 13amp plug and cable.

Maximum Temperature: 1100°C.


  • Internal dimensions: 200mm x 200mm x 120mm (w x d x h)
  • External dimensions: 390mm x 450mm x 270mm (w x d x h)
  • Weight: 22kg unpackaged

Shelf Kit:

  • 1 x 175mm x 175mm circular kiln shelf
  • Props

A shelf will fit 1 x 10cm coasters.

CE certified.


The reliable and easy to use Glassmaster LT 3 button controller provides features for both the beginner and the advanced artist. Starting with simple factory set programmes can save a lot of time and a lot of glass. However, as you become familiar with the glass kiln this controller allows you to modify the settings during firing or design your own firings with five additional eight segment programmes, providing you with total programming freedom and confidence.

Delivery Details

Delivery is to your kerbside only and does not include installation. Please consider that you may need help to situate the kiln. This kiln can only be sent by standard shipping (3 to 5 working days).

When ordering your kiln please state any access issues at the delivery address in the special instructions. Please also state which date you would like to take delivery (apart from Saturday or Sunday). Delivery will be between 9am and 5pm on your nominated day.

Customer Reviews

Based on 10 reviews
Colin Webber

I got this 2weeks ago I have never done glass fusing. The videos are great they got me started. I'm making great things now. It's a great starter kiln

Michelle Gillam-Hull

I bought this kiln as a tester kiln to sit alongside its big brother the Firebox14. Its a super little kiln and quicker to fire and cool, with the bonus of have the same controller.

Its given me extra capacity but more important for me, flexibility to fire at different temperatures in smaller batches in the middle of a larger firing run.

The information videos on how to change the settings are fantastic too, much easier to understand than the manual.

Its also a great peace of mind to know that the Warmglass team are available to talk to with any technical issues. I would not dream of buying a kiln from anywhere else now.

The elements in the side also give a nice even firing. Its also very sturdy but light enough to take with me when teaching residential workshops,

This is a fantastic starter kiln and I could not recommend it more highly for its ease of use, reliable results and compact size.

Thank you Warmglass

Karen Dulchaointigh

My son bought me this kiln for Christmas, up until now I had been using a microwave kiln which has obvious limitations. For jewellery makers this kiln is ideal and soooo easy to use with easy to follow instructions for beginners like me. The auto function with fast full fuse allows beginners to make lovely pieces without the worry of having to judge times by themselves while the Pro function allows the more experienced the flexibility to create their own firing times. I love this kiln which has quickly become the star of my craft room. For those who are considering buying it I would just say 'don't delay any further, order it. You'll be glad that you did.

Gwyn Moses

After a lot of thinking I bought this kiln to get me started in glass rather than wait and get a bigger one. It is incredibly easy to use on the auto programmes and even accessing the pre-stored casting programme was fairly simple. It is ideal for Bullseye glass, but I haven't yet started tweaking the temperatures to get better results from float glass, which seems to end up with a strong tack fuse instead of a full fuse. The main drawback is size, but that was known about and is more than compensated for by ease of use.

Janet Bridge

This is my first kiln and I love it. I was a little concerned about it being the lowest cost kiln (you pay for what you get kinda thing) but it was the only one we could afford. Since getting it, it is permanently on, the only thing that would make me trade this kiln would be for a bigger one and even then, it would take a lot of convincing!!!