PRALATEX

(Dr. L. Prakash's Latex)

Pralatex - M


One Part, Air Drying, Water Soluble, Liquid Latex Rubber

Available in Two Packs

  • 100 grams – Rs. 125/-
  • 1 Kg – Rs. 999/-

 

Liquid Moulding Rubber (Pralatex, (Dr. L. Prakash’s invention)

            Moulding, Latex is rubber from trees mixed in solvents plasticizers, elastomers and water. It is an excellent material for creating moulds and dies, and has the following advantages

  • Costs a fraction of liquid silicone rubber
  • Gives better detail than plaster of paris
  • Pour, dip, drip or brush techniques
  • Useful for both cold and exothermic casting. Unsuitable for hot casting and metal work.
  • Shelf life of unopened bottle is one year. Shelf life of opened bottle is 6 months.
  • Freely soluble in water and fully washable and dilutable.
  • Does not need bandage cloth reinforcement or backing.

 

Handling and use of Latex

  • Keep bottle closed. Exposure to air hardens rubber.
  • Small objects can be dipped into the rubber a couple of time to make a mould.
  • For bigger objects, drip the rubber or pour it over the object to get a mould. You will need multiple coats depending on the size of the object.   

 

 

For still larger objects, the first cast can be applied by a brush and subsequent coats poured. Multiple brush layer saves material.

Once dried, the rubber stiffens avoids the need of a support mould in small sculptures. They are however needed in bigger sculptures.

 

Quantity of  Usage

  • For objects 3 inches ( – 7.5) cm or less, three coats are enough
  • Objects 12 inches or so will need six to twelve coats.
  • Larger objects need up to twelve to fifteen coats

 

 

Drying Time

  • In hot weather each coat dries in two hours  depending on the thickness.
  • For quick drying, use a blower or hair dryer. A hair dryer dries a layer in 5 to 8 min depending on size of mould.
  • Wet rubber is shiny and glistening, while dry rubber is of mat finish and dull.

 

Brush care and precalculations

  • Don’t use sable or squirrel hair brushes. Use soft synthetic nylon hair brushes.
  • Wash brush in running water every ninety seconds to avoid hardened rubber from jamming the brush.
  • If rubber dries on brush, soak in solvent or thinner

 

 

Mould/Die maintenance and Care

  • Don’t apply the next layer until the previous layer is completely dry.
  • Don’t remove die from object until it is completely dry.
  • Prime the die by painting both sides with coconut oil/wax mixture four times allowing rubber to absorb the oil.
  • Soak the die in a bucket of water for six hours.
  • Dry in shade before beginning use
  • Cold casting with plaster, stone powder or dental cement can be used for hundreds of pieces.
  • With fibreglass and polyster resins, use low activator catalyst ratio to avoid high temperatures.
  • With resin and fibreglass use, clean die after every use and soak in water for half an hour. Coat with oil/wax before pouring resin.
  • If the die is going to remain unused for prolonged periods, drape it on the object to retain shape.

 

Handling and use of Latex

  • Latex is safe and natural product
  • It is totally water soluble and washable until dry
  • No documented health hazzards

 

Handling and use of Latex

  • Finger dip test : Dip your finger and you should find a uniform coat thicker than  0.5 mm
  • Drip test. By tilting the bottle, the rubber should  flow thicker than honey.
  • Polythene sheet test: 3ml of latex poured on a polythene sheet should spread to a thickness not lesser than 1mm.

Videos are available on Youtube (Tutorials & Methods)

 

1. Dr. L. Prakash's Invention Praklay

https://www.youtube.com/watch?v=2phWqIdDKNo

2. How to make a transparent statue

https://www.youtube.com/watch?v=dOG82rqqndc

3. Pralatex special effect make up

https://www.youtube.com/watch?v=t0IxmLwLQ30

4. Masking fluid

https://www.youtube.com/watch?v=nscDsgq1mDA

5. Selfie Sculpture

https://www.youtube.com/watch?v=1_WjuYlQ2jk

6. Making Latex Mask

https://www.youtube.com/watch?v=CefcNEcI18g

7. Latex Horror Mask

https://www.youtube.com/watch?v=gcdy8cokOmA

8. My first attempt at graffiti art

https://www.youtube.com/watch?v=UzeJpJa-xsU

 

 

LARA Handicrafts / Dr. L. Prakash

No. 29, Karuneegar Street,Nerkundrum, Chennai 107.

044-29001193/9791020615

larahandicrafts@gmail.com

www.praklay.com

www.bananabooks.in

©2015 by Dr. L. Prakash

 

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