How to make plumber's putty

Written by carl pruit
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Plumber's putty is designed to be used on pipes to create a watertight seal. It is a pliable substance that can be moulded and shaped however you need in order to apply it to various joints and fittings. Plumber's putty is used by spreading the substance around the threads on both pieces of piping and then joining the pipes together. Making the compound is simple to do, but the ingredients must be handled carefully.

Skill level:
Moderately Easy

Things you need

  • Dust mask
  • Latex gloves
  • Wax paper
  • Masking tape
  • 454gr white modelling clay
  • 1/4 cup of linseed oil
  • 2 tablespoons of powdered limestone
  • 1 pint empty wide-mouth plastic bottle

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    How to Make Plumber's Putty

  1. 1

    Lay a sheet of wax paper about 24 inches long over your work surface to place the ingredients of your plumber's putty on and tape it down with masking tape. Before mixing the ingredients, put on latex gloves and a dust mask. Place 454gr of white modelling clay on the wax paper and mould the clay into a bowl shape so that it can hold about a 1/4 cup of liquid in the centre.

  2. 2

    Pour almost a 1/4 cup of linseed oil into the clay bowl, leaving about a teaspoon of liquid to be used later. Allow the oil to soak into the clay for 2 or 3 hours and then begin working the clay and oil together until it is mixed completely.

  3. 3

    Add 2 tablespoons of powdered limestone to the clay and work it into the mixture until it is totally saturated in the material. Verify that there are no pockets of limestone that have not been worked into the mix.

  4. 4

    Work the remainder of the linseed oil into the mixture until it has been completely dissolved by the putty compound. Place the plumber's putty into the 1 pint empty plastic container and place the lid on the jar.

  5. 5

    Throw the wax paper away and clean up any left over toxic material to store in a safe place.

Tips and warnings

  • Find an area that is well ventilated to mix the plumber's putty compound.

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