Flame polishing

Flame polishing is a method of polishing a material, usually thermoplastics or glass, by exposing it to a flame or heat. By melting the surface of the material, surface tension smooths the surface out. Operator skill is critical with this method. When done properly, flame plastic polishing produces the clearest finish, especially when polishing acrylic. This method is most applicable to flat external surfaces. Flame polishing is frequently used in acrylic plastic fabrication because of its high speed when compared to abrasive methods. In this application, a torch burning hydrogen and oxygen is typically used, one reason being that the flame chemistry is unlikely to contaminate the plastic.

Flame polishing is essential to creation of the glass pipettes used for the patch clamp technique of voltage clamping.

Glass production techniques

Commercial techniques	Float glass process Blowing and pressing (containers) Extrusion / Drawing (fibers, glasswool) Drawing (optical fibers) Precision glass moulding Overflow downdraw method Pressing Casting Cutting Flame polishing Chemical polishing Diamond turning Rolling

Artistic and historic techniques	Beadmaking Blowing Blown plate Broad sheet Caneworking Crown glass Cylinder blown sheet Engraving Etching Fourcault process Fusing Lampworking Machine drawn cylinder sheet Millefiori Polished plate Slumping Stained glass fusing Stained glass production

Natural processes	Radiative processes Opal formation Sea glass Shock metamorphic glasses/Impactite Vitrified sand Volcanic glasses

See also	Glossary of glass art terms Glass recycling

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Flame polishing

See also