Julie found an article this week regarding the use of plaster as a moulding material for hands & feet.
This should not be done for several reasons, one of which is highlighted in the articles . A water & plaster mixture is exothermic - that is, heat is given off when the two are mixed together & this
CAN cause burns if the mixture is in contact with the skin. Plaster bandage is usually kept slightly off the skin with a layer of vaseline & dues to being applied in thin layers tends not to give rise to the same issues as a tub of plaster mix does.
Have a read & you'll see why we only recommend taking moulds of children's hands & feet with aliginate - an inert, non toxic mixture which is fully biodegradeable. Plus, you'll get much more detail with alginate!
Plaster of Paris Hazard AlertIn an incident a girl was mixing Plaster of Paris withwater by hand, intending to make a plaster cast ofher hand. The mix became very hot, the girl sufferedserious burns and her hands had to be amputated.The safety Data Sheet supplied with the product didwarn against making casts of the hand.Although Plaster of Paris is used for setting bones,in such cases it is never put in direct contact with theskin and, in addition, it is used in relatively thin layerso the heat can dissipate. In bulk the temperature canreach 60°C or so.Before using plaster of paris to make casts of thechildren’s hands or feet, please check with theproduct manufacturer that it is safe to do so.
Taken from the Northern Devon District Early Years and Childcare Newsletter, Summer 2007
Link to the original pdf documentWant to buy some alginate for your castign needs? We sell alginate in heat sealed bags on their own or in packs with casting powder & full instruction.
Click here to see our alginate & plaster supplies. Data sheets are available for all our materials on request.