Item Name: Graphite Reamer 2mm - 16mm Taper SKU: 850-524 Description: The Graphite Reamer 2mm - 16mm Taper is a precision-shaped graphite forming tool with a smooth tapered working end that transitions from 2 mm up to 16 mm. Graphite is used for this tool because it tolerates heat well and hot glass releases cleanly from it, making it ideal for shaping without sticking. This reamer is used in lampworking and scientific glass work when you need to open, size, or true up a hole while the glass is still hot, or when you need to gently expand a loop or opening to a controlled diameter. A simple turning motion allows you to gradually enlarge an opening while keeping the interior smooth and round. How it is used: Warm the graphite reamer slightly at the edge of the flame to reduce thermal shock and keep the glass from chilling on contact. Bring the glass opening to a workable heat so it is soft enough to move without tearing or collapsing. Insert the tapered tip into the opening and rotate the reamer smoothly to expand the hole gradually. Work in short heat and shape cycles to maintain control of roundness and wall thickness. Stop at the desired diameter, then fire-polish the opening as needed to smooth any tooling marks. Dimensions: Approximately 38mm long reamer head
