CLICK HERE FOR INDEX PAGE

MDF MOULDS AND PEWTER CASTING - SMALL SCALE CASTING - 2

V. Ryan 2008 - 2009

 

When the mould is finished it is placed between the two supporting pieces of MDF and secured in a vice. A hot air gun is normally used to strip old paint from wood. However, it is ideal for heating up pewter and usually takes about two to three minutes before it is ready for pouring.

 

When the pewter is molten it is ready to pour into the mould. Safety equipment should be worn when carrying out this procedure. Leather gloves, a safety visor and leather apron are usually worn.

When pouring is finished a small amount of pewter is normally left above the sprue. This must be removed quickly by pushing a piece of wood along the top. The excess pewter falls to the side and can be recycled later.
The casting is allowed to cool and removed from between the supporting pieces.

 

If drilling is needed a hand vice is used to hold the casting. This is a safe technique. The hand vice has two jaws that are closed by turning a wing nut. (See below).

The pewter letter is finally cleaned / smoothed by using of emery cloth. A small amount of oil is added and the letter is moved forwards and backwards. Smoothing the surfaces can take a considerable amount of time however, the finish is very good.

If a polished surface is required a polishing machine can be used.

     
CLICK HERE FOR PREVIOUS MDF MOULD AND PEWTER CASTING PAGE
   
CLICK HERE FOR EQUIPMENT AND PROCESSES INDEX PAGE
     
 
Google
 
Web www.technologystudent.com