Cast Aluminium Sundial - Revision history

DT Online at 13:55, 26 December 2016

2016-12-26T13:55:14Z

DT Online: Added Text

2016-11-23T10:02:11Z

Added Text

← Older revision		Revision as of 10:02, 23 November 2016
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	=====Ideas=====		=====Ideas=====

			* Find out about the various designs possible by '''[[Exploring Sundials]]''' in the '''DT Online''' '''[[:Category:Sundials\|Sundials]]''' section.


	[[File:SundialProjectIdeas.png\|600px\|center]]		[[File:SundialProjectIdeas.png\|600px\|center]]


	=====Design Development and Construction=====		=====Design Development and Construction=====

			* Use the '''DT Online''' '''[[Sundial Design Tools]]''' to work out the spacing or angles of your '''Hour LInes'''
			* Construct a full-size '''Pattern''' of your '''Dial Plate''' and '''Gnomon''' support using '''MDF''' or similar materials.
			* Any vertical sides should be given a slight taper to ensure the '''Pattern''' will withdraw from the mould.
			* Ensure all inside corners are give a slight radius by using wood filler or painting with a good surface primer.
			* Paint over to provide a good surface finish then follow the procedures for '''[[Sand Casting]]'''
			* The '''Gnomon''' support may be a '''Split Pattern''' or cast using '''Odd-Side Moulding''' techniques.

	[[File:SundialProjectDevelopment.png\|600px\|center]]		[[File:SundialProjectDevelopment.png\|600px\|center]]

			* Remove the '''Sprues''' from the finished casting and machine surfaces where needed either with a '''[[Milling Machine]]''' or by '''Facing-off''' using a '''[[Centre Lathe]]''' with the casting fixed to a '''Face Plate'''.
			* The casting may also be finished with '''[[Files and Rasps\|Files]]''' and '''[[Emery Cloth]]''' or '''[[Wet or Dry Paper]]''' if machinery is not available.
			* Drill and '''[[Taps and Dies\|Tap]]''' the '''Gnomon''' support to receive fixing '''[[Nuts, Bolts and Washers\|Machine Screws]]''' and the threaded '''Gnomon''' rod.

DT Online: Added Category

2016-11-23T09:06:47Z

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			[[Category:Topics, Projects and Tasks]]
			[[Category:Manufacturing Projects]]
	[[Category:Casting]]		[[Category:Casting]]
	~~[[Category:Manufacturing Projects]]~~
	[[Category:Sundials]]		[[Category:Sundials]]

DT Online at 18:28, 30 October 2016

2016-10-30T18:28:18Z

← Older revision		Revision as of 18:28, 30 October 2016
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	=====Materials Available=====		=====Materials Available=====

	The main component ''(i.e. the 'Dial Plate')'' must be '''[[~~Sand Casting~~\|Sand Cast]]''' from aluminium using a one-piece pattern. Minor components may be added from any available material ''(e.g. stainless steel rod or brass plate for Gnomon, fixing screws, coloured polyester resign to fill recesses shaped to show numbers, numerals, symbols, shapes, lines etc.)''.		The main component ''(i.e. the 'Dial Plate')'' must be '''[[Cast Aluminium Plaquette\|Sand Cast]]''' from aluminium using a one-piece pattern. Minor components may be added from any available material ''(e.g. stainless steel rod or brass plate for Gnomon, fixing screws, coloured polyester resign to fill recesses shaped to show numbers, numerals, symbols, shapes, lines etc.)''.

DT Online: Added Category

2016-10-30T18:27:15Z

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			[[Category:Casting]]
	[[Category:Manufacturing Projects]]		[[Category:Manufacturing Projects]]
	[[Category:Sundials]]		[[Category:Sundials]]

DT Online: Added Category

2016-10-30T18:13:43Z

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	* Is it installed in the best place?		* Is it installed in the best place?
	* Monitor over time and judge if it is affected by weather or vandalism.		* Monitor over time and judge if it is affected by weather or vandalism.



			[[Category:Manufacturing Projects]]
			[[Category:Sundials]]

DT Online: Created article

2016-10-30T18:09:23Z

Created article

New page

[[File:AluminiumSundialProject.png|300px|right]]
__TOC__

=====Design Brief=====

Design and make a Sundial to suit your home location '''[[Latitude]]''' which can be sited outside permanently in your community.

=====Materials Available=====

The main component ''(i.e. the 'Dial Plate')'' must be '''[[Sand Casting|Sand Cast]]''' from aluminium using a one-piece pattern. Minor components may be added from any available material ''(e.g. stainless steel rod or brass plate for Gnomon, fixing screws, coloured polyester resign to fill recesses shaped to show numbers, numerals, symbols, shapes, lines etc.)''.

=====Considerations=====

* Where will the '''Sundial''' be located - ''(e.g. on a flat surface, a wall, a post, as part of another structure)''?
* How can the '''Sundial''' be made weatherproof?
* Will it need to be vandal resistant?
* How accurate will it need to be?
* What limitations will '''[[Sand Casting]]''' impose on the design?

=====Research=====

* Which way should a '''[[Finding True North|Sundial]]''' face - does it matter?
* Why does '''[[Sundials and Gnomons|Latitude]]''' of location matter?
* What types of '''[[Exploring Sundials|Sundial]]''' are available?
* How are '''[[Sundial Design Tools|Sundials]]''' calibrated?

=====Ideas=====
[[File:SundialProjectIdeas.png|600px|center]]

=====Design Development and Construction=====
[[File:SundialProjectDevelopment.png|600px|center]]

=====Testing and Evaluation=====

* How accurate a timekeeper is it?
* Are members of your community pleased with it?
* Is it installed in the best place?
* Monitor over time and judge if it is affected by weather or vandalism.

← Older revision		Revision as of 13:55, 26 December 2016
Line 10:		Line 10:
	=====Materials Available=====		=====Materials Available=====

	The main component ''(i.e. the 'Dial Plate')'' must be '''[[Cast Aluminium Plaquette\|Sand Cast]]''' from aluminium using a one-piece pattern. Minor components may be added from any available material ''(e.g. stainless steel rod or brass plate for Gnomon, fixing screws, coloured polyester resign to fill recesses shaped to show numbers, numerals, symbols, shapes, lines etc.)''.		The main component ''(i.e. the 'Dial Plate')'' must be '''[[Cast Aluminium Plaquette\|Sand Cast]]''' from aluminium using a one-piece pattern. Minor components may be added from any available material ''(e.g. stainless steel rod or brass plate for '''[[Sundials and Gnomons\|Gnomon]]''', fixing screws, coloured polyester resign to fill recesses shaped to show numbers, numerals, symbols, shapes, lines etc.)''.


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	* Use the '''DT Online''' '''[[Sundial Design Tools]]''' to work out the spacing or angles of your '''Hour LInes'''		* Use the '''DT Online''' '''[[Sundial Design Tools]]''' to work out the spacing or angles of your '''Hour LInes'''
	* Construct a full-size '''Pattern''' of your '''Dial Plate''' and '''Gnomon''' support using '''MDF''' or similar materials.		* Construct a full-size '''[[Sand Casting\|Pattern]]''' of your '''[[Sundial Design Tools\|Dial Plate]]''' and '''[[Sundials and Gnomons\|Gnomon]]''' support using '''MDF''' or similar materials.
	* Any vertical sides should be given a slight taper to ensure the '''Pattern''' will withdraw from the mould.		* Any vertical sides should be given a slight taper to ensure the '''[[Sand Casting\|Pattern]]''' will withdraw from the mould.
	* Ensure all inside corners are give a slight radius by using wood filler or painting with a good surface primer.		* Ensure all inside corners are give a slight radius by using wood filler or painting with a good surface primer.
	* Paint over to provide a good surface finish then follow the procedures for '''[[Sand Casting]]'''		* Paint over to provide a good surface finish then follow the procedures for '''[[Sand Casting]]'''
	* The '''Gnomon''' support may be a '''Split Pattern''' or cast using '''Odd-~~Side~~ Moulding''' techniques.		* The '''Gnomon''' support may be a '''[[Sand Casting\|Split Pattern]]''' or cast using '''[[Odd-side Moulding]]''' techniques.

	[[File:SundialProjectDevelopment.png\|600px\|center]]		[[File:SundialProjectDevelopment.png\|600px\|center]]

	* Remove the '''Sprues''' from the finished casting and machine surfaces where needed either with a '''[[Milling Machine]]''' or by '''Facing-off''' using a '''[[Centre Lathe]]''' with the casting fixed to a '''Face Plate'''.		* Remove the '''[[Sand Casting\|Sprues]]''' from the finished casting and machine surfaces where needed either with a '''[[Milling Machine]]''' or by '''Facing-off''' using a '''[[Centre Lathe]]''' with the casting fixed to a '''Face Plate'''.
	* The casting may also be finished with '''[[Files and Rasps\|Files]]''' and '''[[Emery Cloth]]''' or '''[[Wet or Dry Paper]]''' if machinery is not available.		* The casting may also be finished with '''[[Files and Rasps\|Files]]''' and '''[[Emery Cloth]]''' or '''[[Wet or Dry Paper]]''' if machinery is not available.
	* Drill and '''[[Taps and Dies\|Tap]]''' the '''Gnomon''' support to receive fixing '''[[Nuts, Bolts and Washers\|Machine Screws]]''' and the threaded '''Gnomon''' rod.		* Drill and '''[[Taps and Dies\|Tap]]''' the '''[[Sundials and Gnomons\|Gnomon]]''' support to receive fixing '''[[Nuts, Bolts and Washers\|Machine Screws]]''' and the threaded '''Gnomon''' rod.