Fretz BT-10 Brass Tube Forms 1" x 3/8"- Pack of 3

These brass tube forms from Fretz are designed for jewelers and metalsmiths who need ready-to-use blanks for doming, forming, and fabrication work. Bill Fretz developed these after repeated requests from working jewelers — each form arrives pre-cut, edge-finished, annealed, and tumbled so you can move directly into your forming process without additional prep.

Fretz uses seamless extruded tubing made from a malleable brass alloy of 70% copper and 30% zinc. The tubing is cut to size, edges are cleaned on a belt sander, then each piece is annealed and given a basic tumbled finish. The seamless construction ensures consistent wall integrity throughout the form.

Keep in mind: when making convex (domed) forms, doming will reduce the finished diameter of the piece. When making concave forms, the finished diameter will not be affected.

Features

• Seamless extruded brass construction for consistent wall integrity
• Made from a malleable 70% copper / 30% zinc brass alloy
• 20 gauge (0.81 mm) wall thickness
• Edges cleaned on a belt sander for smooth, ready-to-use blanks
• Pre-annealed for immediate forming and shaping
• Basic tumbled finish applied before packaging
• Designed by Bill Fretz in response to professional jeweler demand

Specifications

What's Included

• 3 brass tube forms, 1 in. diameter × 3/8 in. wide