Fretz BT-9 Brass Tube Forms 1" x 1/2"- Pack of 3

These brass tube forms from Fretz are designed for jewelers and metalsmiths who need ready-to-use blanks for forming, doming, and fabricating dimensional pieces. Made from seamless extruded tubing composed of a malleable brass alloy — 70% copper and 30% zinc — each blank is cut to size, edge-finished on a belt sander, annealed, and given a basic tumbled finish. Because the tubing is seamless, there are no seams to manage during forming or soldering.

Fretz developed these tube forms in response to repeated demand from working jewelers who wanted pre-made blanks ready for immediate use. Each pack contains three identical forms at 1" diameter × 1/2" wide, making them a practical addition to the studio.

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

Features

• Seamless extruded tubing — no seams to contend with during forming or soldering
• Brass alloy: 70% copper, 30% zinc for good malleability
• 20 gauge (0.81 mm) wall thickness
• Pre-annealed for immediate forming
• Edges cleaned and finished on a belt sander
• Basic tumbled finish applied
• Sold in packs of 3

Specifications

What's Included

• 3 × Fretz BT-9 brass tube forms (1" diameter × 1/2" wide)

Notes

• This product is subject to California Proposition 65 warnings regarding lead exposure.
• When forming convex (domed) shapes, expect the finished outer diameter to be smaller than the starting blank. Concave forming does not alter the diameter.