Sunday, 23 November 2008

Molding and casting

Mould life suppliers
http://www.mouldlife.co.uk/?gclid=CI3qs9WWjJcCFRHdlAodpydu-g
I used this site to get to grip with all the technical terminology, and understand the materials, as they have little drop down screens under each product explaining exactly what the product dose.

Is a link i watched to understand the basic principles of mould making.
http://www.youtube.com/watch?v=M400dj19nUs part one
http://www.youtube.com/watch?v=NVvGc7VDFvc&feature=related part two
same company, how to make a two part mold.

I also watched the Niel Gorton DVD's and took down written notes, which will be presented with my paper research. For questions which could not be answered via research i refer to Julia the workshop technision.

http://www.youtube.com/watch?v=LSH19G_6Yeo&feature=related

These books have been a huge help. and i have reffered to them countless times, durning the project.

Zippers

http://www.questoutfitters.com/zipper_tips.htm
Is the link i used heavily for information

COIL more flexible and smoother running than tooth zippers.
As a general rule, typically the #5 is for clothing and the
#7 & #8 are used for gear. Uses: tents, jackets, luggage

TOOTH SIZE the smaller the number the smaller the tooth
size: ie. #5 is smaller than #10 and thus not as strong.

TOOTH SIZE the smaller the number the smaller the tooth
size: ie. #5 is smaller than #10 and thus not as strong.

CONTINUOUS ZIPPER a length of zipper, either coil or
tooth style, sold by the yard. Allows you to make and
customize your own zippers. At least one end must be
sewn closed. It cannot be used to make separating
jacket zippers.

ZIPPER TAB the zipper pull (slider) on the zipper [Note:
the zipper tabs from one brand (ie: YKK brand) are
usually not interchangeable with other zipper brands
(ie: Maxi brand zippers, etc.)

(1) single tab-a zipper tab with only one pull
wpe1B.jpg (1809 bytes)

(2) double-reversible tab-a zipper tab with a pull on both sides of the tab. Uses: sleeping bags

wpe1E.jpg (1741 bytes)

(3) non-locking tab(NL)-a zipper tab which slides easily and
has no internal locking mechanism to hold it in
place. Uses: pockets, luggage, tent doors

(4) locking tab(L)-a coil zipper tab which has an internal
locking mechanism to hold the tab in place
ie. trouser zipper

(5) key locking tab(KL)-a zipper tabs which locks and
unlocks with a removable key. Uses:security
envelopes, luggage

For many projects it’s your preference which style you choose

TOOTH STYLE
has individual blocks of teeth.

wpe3A.jpg (2819 bytes)

COIL STYLE
has continuous wrap of
nylon filament

ZIPPER ANATOMY

wpe8.jpg (22211 bytes)


WHY MAKE YOUR OWN ZIPPERS:

There are a number of reasons why you would want to make your own zipper using
continuous coil or continuous tooth zipper length.

1. By doing so you can customize the length and style of the zipper you want ie: one
way non-separating, two-way non-separating or one-end-closed. [NOTE: The

only style of zipper you cannot make with continuous zipper is a one-way or a
two-way separating zipper-like a jacket style zipper].
2. When you make your own zipper you can select the style of zipper tab you desire:
non-locking, locking, key locking or double reversible. See the zipper terms box
to determine which style of tab to use.
3. Often times it is more economical to make your own. To determine how much to
buy just add 2" to the desired length you want the zipper to be (1" extra for each

end) ie: if you want a 70" zipper you will need at least 72" of continuous zipper.

SHOULD YOU USE TOP & BOTTOM STOPS:

Top and bottom stops can be optional. The purpose of zipper stops is to keep the
zipper tab from pulling off when the zipper is in use. If an end of the zipper is sewn
into a seam you may choose not to attach top/bottom stops because the seam will act
as the "stops". When using zipper stops, bottom stops are attached to one end of a

one end closed zipper and both ends of a one or two-way non-separating zipper. Top
stops are used at the top end (the "open" end) of a one-end closed zipper.

WHAT SIZE TOP & BOTTOM STOPS SHOULD YOU USE:

For #5 and #8 coil and #5 tooth zipper use #7 top and bottom stops. For #10 coil and
#10 tooth zipper use #10 top and bottom stops.

HOW TO ATTACH A ZIPPER TAB

1). On one end of the zipper tape, part the zipper teeth about 2".

2). Insert one side of the zipper about 1/4 " into the curved end
of the zipper slider.


wpe22.jpg (8190 bytes)

wpe109.jpg (1760 bytes)




[NOTE: On double pull sliders place the
slider so that the angled portion of the
flange is up].



3). Insert the other end of the zipper into the slider. To prevent
misalignment on the other end of the zipper line up the short ends
of the zipper tape evenly.

wpe21.jpg (7098 bytes)

4). Firmly holding both zipper halves slide the pull onto the
zipper teeth. It may take several attempts to line up the zipper
teeth and to prevent a bulge on one side of the zipper tape if the
teeth are misaligned.

[NOTE: When putting two pulls on the same zipper tape, attach the
second tab on the opposite end of the zipper tape using the same
method as above].

some refrence material





This is the image i drew over in the program Rhino to prepare my drawings ready to be CNC machined

Liver os Sulpher saftey info

Chemical Name
Sulphurated Potash; Liver of Sulphur

Formula
Mixture of potassium polysulphides and potassium thiosulphate

Physical Data
Very soluble in water.

Appearance and Odour
Yellowish-brown lumps. May discolour on exposure to air and light. Odour of hydrogen sulphide.

Reactivity
Decomposes in air to free sulphur and potassium carbonate turning yellow to grey. Incompatible with acids, oxidizers, alcohol, carbonate water.

First Aid
CONTACT - wash contact area thoroughly with water. If eye irritation persists, see a doctor. If swallowed, give water or milk and induce vomiting.
INHALATION - remove to fresh air, give oxygen or respiration as needed. Get medical assistance. Launder clothing before reuse.

Spills and Leaks
Sweep up spill and collect for disposal. Ventilate area. Wash spill area thoroughly with water. Disposal to hazardous waste.

Stability
Stable, but flammable. Dust may form an explosive mixture with air. Incompatible with strong acids, alcohols, strong oxidizing agents, strong reducing agents, combustible materials, halogenated hydrocarbons.

Toxicology
Harmful if swallowed or inhaled. Severe irritant. Toxic gas (hydrogen sulphide).

Risk phrases
Harmful by inhalation
Harmful if swallowed
Irritating to eyes
Irritating to respiratory system
Irritating to skin

Transport Information
Materials liable to spontaneous combustion

Personal protection
Gloves, safety glasses, adequate ventilation.

Liver of Sulphur

This is the link i used to find out how to use liver of sulphur. I followed the step by step instruction on how to use the chemical.
http://www.metalclayuk.co.uk/asp/LOS.asp

** First of all read the Safety Information and if you have not already done so read the Explanatory Notes

** Make sure you wear gloves and have good ventilation before starting. It is a good idea to wear long sleeves as well.

Almost everyone who uses Liver of Sulphur has their own way of doing it, and there is more than one way to achieve a desired effect. As with most chemical reactions, the higher the temperature the faster the reaction. LOS can be used up to temperatures approaching boiling point, but the hotter the water the more hydrogen sulphide gas is given off. This gas is TOXIC so good ventilation is essential. LOS is also a powerful irritant to the skin so covering any exposed skin is a good idea.


The Basic Recipe

1 small piece of liver of sulphur, about 6mm in diameter (slightly larger than a peppercorn)
500 ml hot distilled water - it is perfectly acceptable to use tap water or bottled mineral water but be aware that minerals in them may affect the colour of the result.
1 tablespoon (15ml) clear household ammonia (optional) and/or
1 teaspoon (5ml) pure salt (sodium chloride) (optional) - it is perfectly acceptable to use iodised table salt, sea salt or iodised salt but be aware that they may produce variable results

You will also need:

Small bowl of clean hot water, hairdryer or cup warmer
Small bowl of cold water - iced if possible
Small glass bowl for mixing up the LOS solution
Soft toothbrush
Washing up liquid
Kitchen towel
Tweezers or a short length of wire

The piece to be coloured must be perfectly clean and preferably finished to a mirror finish where patina will not be required. It is easier to remove unwanted patina from a mirror finish than from a textured one, even if the texture is satin. Scrub the piece thoroughly with washing-up liquid and the toothbrush under running water, being careful not to touch the areas to be coloured (grease from your fingers will affect the reaction and lead to uneven colours).

Dipping Method

  1. Add the hot water to the lump of Liver of Sulphur, add the ammonia and/or salt if used and stir until the LOS is dissolved. The resultant solution will be very pale yellow and smell of rotten eggs. The smell is hydrogen sulphide gas so do not bend over the container.
  2. Use a short piece of wire to make a handle to hold the piece, or hold it in tweezers.
  3. Immerse the piece in the hot water and blot it dry quickly on kitchen towel. Alternatively, warm it with a hairdryer or place it on a cup warmer for a minute or two to warm up. Heating the piece before dipping it ensures that it is the same temperature everywhere and avoids differential heating when the piece is dipped.
  4. Dip the piece into the LOS solution and remove it immediately to the bowl of cold water to stop the reaction. You should see an immediate colour change which may be pale yellow or a darker colour - it all depends on how hot and how strong the solution is.
  5. Wash the piece in soapy water and rinse well.

Repeat from step 3 until you have achieved a colour you like.

Use fine polishing papers or metal polish to remove patina from areas to be left uncoloured.

Polish the patina to a sheen by buffing very gently with a soft cloth. Too much buffing, or too hard will remove the patina.

If you have not taken the colour to blue-black it will continue to darken as a result of contact with sulphur compounds in the atmosphere. You can prevent this by polishing the patina with beeswax or museum wax, or by applying a protective layer of lacquer or acrylic sealant.

Painting Method

Follow the steps as for the dipping method but at step 4 use a paintbrush to apply the LOS solution to the selected area.

Masking Method

You can prevent patina from developing by painting selected areas with nail polish or a permanent marker and letting it dry before using the dipping method. The nail polish/marker ink acts as a resist and is subsequently removed by cleaning the piece with acetone or an acetone nail polish remover on a cotton bud.

About Gold

Liver of Sulphur will not affect fine (24ct) gold, so is perfect for emphasising areas gilded by Keum Boo or application of Accent Gold for Silver™. It will however colour carat golds to a darker shade.

Storage

Keep your Liver of Sulphur stored in a cool, dark place. Lump Liver of Sulphur is best stored in a plastic bag with a desiccant sachet inside an airtight plastic container and if correctly stored will remain effective for 2 years or more.

Troubleshooting
Patina flaking off The solution was too strong or the piece was left in it for too long. You can get the deep blue-black by long soaking or by using a strong solution, but this results in a thick layer of patina. It is better to use a weaker solution and multiple dippings, with rinsing in between dippings, and build up the colour gradually.

No colour change at all

If lump LOS has turned grey or liquid LOS has lost its colour and smell then it has become ineffective and should be disposed of.
You hate the result Refire the piece either in a kiln or with a torch. This will remove the patina.

Colours have gone too far Refire the piece either in a kiln or with a torch. This will remove the patina, and you can repolish the piece before trying again

Wednesday, 19 November 2008

Chrome Plating Companys

Chrome plating company’s contacts.

South Coast Chrome Ltd.
6-7 Balena Close Creekmore Poole Dorset BH17 7DB
Contact: Mr. A. Haining 01202 657 799
Category: chrome / chrome plating

Alderney plating ltd

1so 9001

Tel 01202 744664

Thrush Rd, Parkstone, pool

Cicorel Ltd

Coldharbour Bussiness Park

Sherbourne

Dorset

DT9 4JW

United Kingdom

01935 814 359

01935 816 496

Mr R Carr

enquires@cicorel.com

www.cicorel.com