Please Log In

Forgot your password?

Hop on board...

Are you a new Customer? Click here to register.

Loading Zoom, please wait

Square Slumper with Flat Base Mould 8296 (15.2cm x 15cm x 2.4cm)

Price £17.89 Inc VAT (£14.91 ex VAT)

5 out of 5 stars (2 Customer Reviews)
 Go Back to Square Moulds 

All prices include VAT.

Stock Status: More than 10 in stock
We Also Recommend for Square Slumper with Flat Base Mould 8296 (15.2cm x 15cm x 2.4cm):
Product Information
Square Slumper with a flat base. 

Want to create a contemporary piece that is practical too?  With this fabulous mould you can create a medium sized modern square dish with a well defined base ensuring the piece will not tilt. 

Inner Dimensions: Length: 15.2 cm, Width: 15 cm, Height: 2.4 cm 
Outer Dimensions: Length: 15.6 cm, Width: 16 cm, Height: 2.9 cm 

Please note that all our moulds are hand-made and therefore the dimensions may vary slightly from those shown. Mould manufacturers allow a tolerance of up to 2cm. We strongly recommend cutting the glass to the size measured from the actual mould rather than relying solely on the dimensions shown.

Will this mould fit in my kiln?

Looking to make a larger piece? Try mould 8037.


Firing Schedule:

Please Read: This firing recommendation has been calculated using Bullseye Glass with a thickness of 6 mm in a Paragon GL24 kiln, and is courtesy of Bullseye Glass Co. 

Segment Rate (C/hr) Temp. Hold
1 167C 649C :05
2 999 482C 1:00
3 56C 371C :00


  • Small kilns may require the process temperature reducing. In the Hobbyfuser and HotStart Pro, reduce the top temperature from 649C to 626C. In the Firebox 14, reduce the top temperature from 649C to 606C. All kilns vary, as does glass viscosity. Testing is necessary.

  • Remove the shelf when slumping in small kilns.

  • Side firing kilns may require more time in the first ramp than top firing kilns.

  • Bubbles in slumping are caused by firing too high or holding too long at process temperature.

  • Cracked moulds or cracked glass is caused by firing too fast in the first ramp or cooling too fast.

  • Devitrification on the outside of a slumped piece is caused by firing too high or holding too long at process temperature.

All our moulds are designed for multiple use and with care should last for many firings.

Product Reviews
5 out of 5 stars
5 out of 5 stars Saturday 29 March, 2014 By Kathy Mather - See all my reviews
Love this mould, big enough to make a statement but not so big that it uses too much glass to be economical for craft fairs and shows.

The shallow nature means kiln wash doesn't need application frequently - very little is pulled off during the slumping process so very time-economical as well.

Sets of 4 used as sushi plates look great.
5 out of 5 stars Saturday 28 January, 2012 By patricia mallen - See all my reviews
Always a good result with this shape at any size

Write a review

Registered office: 5 Havyat Park, Wrington, Bristol, BS40 5PA, UK
Company Reg No. 5365166. VAT No. 791350132