![]() ![]() Just remember to keep your offcuts in separate boxes. Preference and price are the main reasons why artists may choose one or other of the glasses, preference is personal, the colour palletes for either range may suit your project so don't rule either glass out. System 96 (having a higher COE number is slightly softer than Bullseye). It is good to get to know your kiln controller and to be able to explore the possibilities created by changing the pre-set firing schedules. ![]() Using System 96 or Bullseye Glass in the kiln will require adjustments to the firing program. This is 'soft' and ideal for working quickly when making lampwork glass beads. This is also particularly notable when flameworking with glasses like Moretti, Effetre, Murano which are 104 COE glass. You will find that as COE increases, the amount of heat and time required in kiln forming is reduced. With a good glass cutter and having practised your technique of course. Spectrum 96 is smoother, and is far easier to cut as a result. There are however, certain glasses in the System 96 range, which are made to sizes simelar to Bullseye, these are usually produced by Uroboros Glass Co.īullseye is easily identified by it's rolled texture, which can be used to create bubbles in the glass. So what are the differences?įirstly, sheet size (excluding clear base glass) Bullseye has a usual sheet size of 89cm x 51cm, Spectrum sheets are 122cm x 61cm (for their respective 3mm / 1/8" thickness, others may vary). They both have lovely colours and streaky glass too. ![]() When fusing, this means that glass could crack as it cools.īoth ranges of glass have an excellent range of colours, textures and accessories like frit, stringer and confetti. This means that they expand and contract by different amounts when heated. This is due to the co-efficient of expansion difference (Bullseye is COE 90 and Spectrum / Uroborus System 96 is COE 96). The first point to remember is that you can not mix System 96 and Bullseye fusing glass in one project. ![]()
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