DT Online at 09:15, 5 July 2017

2017-07-05T09:15:05Z

← Older revision		Revision as of 09:15, 5 July 2017
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	=====Description=====		=====Description=====

	'''Sinking''' is a process used to create flat, shallow tray ~~shapes~~ ''(i.e. [https://en.wikipedia.org/wiki/Tableware '''Flatware'''])'' by beating an '''[[Heat_Treatment#Annealing\|Annealed]]''' sheet metal shape into a recess formed in the end grain of a suitable block of close-grained [https://en.wikipedia.org/wiki/Hardwood '''Hardwood'''] known as a '''[[Sinking Block]]'''. These are usually self-made to suit the job in hand.		'''Sinking''' is a process used to create flat, shallow tray forms ''(i.e. [https://en.wikipedia.org/wiki/Tableware '''Flatware'''])'' by beating an '''[[Heat_Treatment#Annealing\|Annealed]]''' sheet metal shape into a recess formed in the end grain of a suitable block of close-grained [https://en.wikipedia.org/wiki/Hardwood '''Hardwood'''] known as a '''[[Sinking Block]]'''. These are usually self-made to suit the job in hand.


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	[[File:Sinking.png \|centre\|700px]]		[[File:Sinking.png \|centre\|700px]]


			Once '''Sinking''' has resulted in a satisfactory shallow form, it can be trued, the metal '''[[Crystalline_Structures#Work_Hardening\|Work Hardened]]''' and polished, by a process known as [https://en.wikipedia.org/wiki/Planishing '''Planishing''']. It is important that the metal is thoroughly cleaned before '''[[Planishing]]''' ''(e.g. by '''[[Pickling]]''' and/or scouring)'' to avoid any grit, oxides or other contaminants being hammered into the surface.

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2017-05-09T09:38:17Z

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[[File:Flatware.png|right|300px]]
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=====Description=====

'''Sinking''' is a process used to create flat, shallow tray shapes ''(i.e. [https://en.wikipedia.org/wiki/Tableware '''Flatware'''])'' by beating an '''[[Heat_Treatment#Annealing|Annealed]]''' sheet metal shape into a recess formed in the end grain of a suitable block of close-grained [https://en.wikipedia.org/wiki/Hardwood '''Hardwood'''] known as a '''[[Sinking Block]]'''. These are usually self-made to suit the job in hand.

=====Process=====

A metal disc is first marked out with the width of the desired rim and concentric guideline circles up to the depth of recess then '''[[Heat_Treatment#Annealing|Annealed]]'''.

The process involves holding the disc horizontally against a '''[[Sinking Block]]''' and rotating it by hand as it is struck with a '''[[Bossing Mallet]]''' or '''[[Silversmith's Hammer|Blocking Hammer]]''' to 'sink' it into the shaped recess of the block. If a circular article is being sunk, two removable pegs or pins may be placed in the wood block to help control the width of the flat surface of the rim.

The rim and the base surface can be kept flat by removing the guide pegs and striking against the flat top of the block with a mallet. Alternatively, each surface in turn can be held against a '''[[Precision Marking and Measuring|Surface Plate]]''' and a piece of scrap wood laid over it, then struck with a hammer.

[[File:Sinking.png |centre|700px]]

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{{Silversmiths Hammer Buyers Guide}}

[[Category:Skills and Processes]]
[[Category:Beaten Metalwork]]

Sinking - Revision history

DT Online at 09:15, 5 July 2017

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