Cup Jacks
Photo: Maruko Tools

Jacks

Cup Jacks

by Maruko Tools ยท Narusawa, Yamanashi, Japan

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Cup jacks with standard or oval blades, from narrow-strap 6" models up to 8" blades, including the new Boyd model with a 34 mm strap.

Furnace / hot shop

Blades
155โ€“200 mm, standard or oval
Strap width
27 (narrow), 34 (Boyd), 40, or 45 mm
Handles
120, 130, or 140 mm
Stock numbers
016, 017, 018, 019, BOYD-34

Where to buy

Links last checked September 30, 2026.

About this tool

High-carbon steel that will rust. Keep it clean and dry.

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