Doming block, 2.5 inch steel cube with a large polished cavity on top and smaller half-spheres on the sides

Doming Block — 2.5" Steel Dapping Die for Beads, Metal Shaping & Jewellery Making

£24.99
Sale price  £24.99 Regular price 
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Doming block, 2.5 inch steel cube with a large polished cavity on top and smaller half-spheres on the sides

Doming Block — 2.5" Steel Dapping Die for Beads, Metal Shaping & Jewellery Making

£24.99
Sale price  £24.99 Regular price 
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Create perfect domes and beads with this solid steel 2.5-inch dapping block, essential for shaping metal on a busy jeweller's bench.

What it does

This hardened steel cube provides a range of hemispherical cavities, allowing you to precisely form metal sheet into smooth, consistent domes. The polished interior surfaces minimise marking on your workpiece, while the integrated swage holes on the sides offer further shaping possibilities for wire and small rods. Its compact, machined flat faces ensure stability, making it a reliable tool for repeatable metal forming tasks.

How to use it

  • Select a cavity matching your desired dome size.
  • Strike the metal disc with a dapping hammer into the cavity.
  • Store flat to maintain the polished cavity finish.

Who it's for

An indispensable tool for UK bench jewellers, silversmiths, and metalsmiths working with non-ferrous sheet metals. It’s ideal for those needing to form multiple identical domes or beads efficiently, offering a more accessible alternative to a full dapping set for everyday bench tasks.

What's in the box

1 x 2.5" Steel Doming Dapping Block/Die

Our promise

Dispatched from the UK. Same-day dispatch target for orders before 2pm Mon–Fri. Free UK delivery on orders of £30 or more. 30-day returns — try it at the bench.

Weight 1200 g

Common questions at the bench

How do I form a dome?
Anneal (soften) the metal first. Set the disc or blank on a cavity, choose a punch that fits that cavity and strike lightly while moving the punch round. Work the dome in stages through the cavities, with a punch that fits each one, until it has the depth and shape you want, annealing again if the metal becomes hard to move.
Which punch fits which cavity?
Use a punch smaller than the cavity, leaving room all round for the thickness of the metal. A punch that is too large pinches the metal against the edge of the cavity, which marks the dome and can damage the punch and the block.
Will it mark my work?
Grit, filings or scratches in a cavity or on a punch head print into the dome. Keep the cavities and punches clean and smooth, use punches that fit, and strike squarely rather than hard.
How should I look after it?
Wipe the block and punches clean after use and store them dry, where the cavities and punch heads cannot knock against other tools. Keep anything made of wood away from water and pickle.

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