Adjustable Graphite Ring Mandrel with Base

Item Name:

Adjustable Graphite Ring Mandrel with Base

SKU:

54131

Description:

This adjustable ring mandrel is a graphite forming tool mounted to a stable base, built for shaping and sizing ring forms while the glass is hot. The working surface is graphite, which is preferred in lampworking because it is heat tolerant, non-wetting to molten glass, and leaves a clean surface when used correctly. The adjustable design allows you to set the mandrel to different ring sizes, making it a practical shop tool for anyone producing rings in multiple sizes without swapping mandrels.

How it is used:

Heat your glass and form a ring blank, then use the graphite mandrel to true the circle, refine the inside diameter, and bring the ring to the desired size while maintaining even wall thickness. The base helps keep the tool steady on the bench so you can work two-handed, which is especially useful when you are controlling heat and alignment at the same time. This tool is typically used during the final shaping stage, after the ring is established but still hot enough to move cleanly.