Skip to content
OMO

Drawplate Triangle 87% 3mm-1mm 20 Holes

Part # 019.055 Out of Stock Weight -- lb -- g
Current price $88.00

The Triangle Drawplate SP 139 features 20 precisely graduated holes for drawing soft non-ferrous wire and stock into a consistent isosceles triangle profile. The two equal sides of each triangular hole measure 87% of the base (factory ratio SP 139), yielding a hole range from 3 mm × 2.6 mm down to 1 mm × 0.87 mm. Each hole is machined to exacting tolerances, ensuring smooth, even draw-downs with minimal resistance and reliable size progression across the full range.

Made from properly hardened steel by an Italian manufacturer with over 40 years of experience producing professional-grade drawplates, this plate combines modern machine tooling with old-world attention to detail. It is designed for use with soft non-ferrous metals including gold, silver, platinum, palladium, and copper alloys.

Features

  • Isosceles triangle profile — equal sides are 87% of the base (factory ratio SP 139)
  • 20 graduated holes for consistent, step-by-step wire reduction
  • Hole range: 3 mm × 2.6 mm (largest) to 1 mm × 0.87 mm (smallest)
  • Precisely machined holes for even, easy draw-downs
  • Properly hardened steel construction for long service life
  • Suitable for gold, silver, platinum, palladium, and copper alloys
  • Produced by an Italian manufacturer with 40+ years of drawplate expertise

Specifications

Shape Isosceles Triangle (SP 139)
Side Ratio Equal sides = 87% of base
Number of Holes 20
Largest Hole 3 mm × 2.6 mm
Smallest Hole 1 mm × 0.87 mm
Material Hardened steel
Compatible Metals Gold, silver, platinum, palladium, copper alloys
Origin Italy
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.
Brand
OMO
Part #
019.055
Type
Drawplates & Drawbenches
Dimensions
7.25 in x 2 in x 0.5 in
Shape
Isosceles Triangle (SP 139)
Side Ratio
Equal sides = 87% of base
Number of Holes
20
Largest Hole
3 mm × 2.6 mm
Smallest Hole
1 mm × 0.87 mm
Material
Hardened steel
Compatible Metals
Gold, silver, platinum, palladium, copper alloys