A very light touch in joining glass and mandrel will give you a smaller footprint to start with. Also, have the mandrel turning before you even get the glass near the surface of the release. If you want a smaller footprint, don't melt a huge gob of glass to start. Melt a small blob the size of a pea, get it down for your footprint, then melt a bigger blob to increase size of bead. HTH
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ESC
Soft glass on a Minor/concentrator since 1996
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