Medium Heart Mould

A medium-sized heart mould for frit casting that produces beautiful glass hearts, perfect for gifts and display. Makes a charming paperweight.

Makes a heart of approximately 5cm x 4cm and 1.5cm thick?.

Bullseye Code: 8976

External mould dimensions are 10cm x 9.1cm x 3.1cm. Fits in the Paragon SC2 kilns.

Will this mould fit in my kiln?

We strongly recommend using ZYP Boron Nitride Spray with our casting moulds for the very best results. Primo Primer can also be used. Standard shelf primer is not suitable.

When filling the mould, pile the frit in a pyramid or dome shape so the centre of the mould is filled higher than the edges. This helps the correct flow of glass during firing, lowering the risk of the glass 'grabbing' the mould sides as it fires:

Filling a glass casting mould

Warm Glass Tip We recommend a fill weight of 45g, fine frit. The heart in the image was made using Red Transparent Fine Frit 1122.01, but other colours such as Erbium Pink Tint (1821.01) and Aqua Blue Tint (1808.01) would also work very nicely.

Firing Schedule:

This schedule is a guideline and you should adjust it to suit your particular kiln, or for different thicknesses of glass. By lowering the temperature to 720°C the piece will shrink less and have a rougher ‘Sugary’ look:

Segment	Rate (C/hr)	Temp.	Hold
1	222C	677C	:60
2	333C	804C	:10
3	999	482C	1:20/2:00
4	18C	427C	:00
5	35C	377C	:00

Similar frit casting moulds to try are Heart Mould 8003, Beach Shells Mould and Blossom Mould.?

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.

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

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