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J A A P K L I J N S T R A
The entire process
When do I need a mould?
Can I direct-cast any original material
Can I direct-cast mixed materials like textile, wood, plastics or other materials?
What if there is an inner metal frame?
Can I safely direct-cast fat volumes?
Preparing the original (porous, non-porous, other)
2 halves mould & mother mould / ‘Block’ moulding
Clay bed / No clay bed.
Feeders and vents
Keys for rubber
Treating undercuts (latex/plaster blocks, other?)
Keys for Mother mould (stability for the rubber)
Waxing the surfaces (waxes)
Mother mould (plaster/polyster/Other?)
Removing the clay/cleaning
Thickening feeders and vents
Waxing of surfaces (between rubber and mother mould)
Second half silicone
Key’s for Mother mould, second half
Waxing of surfaces for mother mould, second half
Mother mould, second half
Key’s for entire Mother mould (screws/other?)
Opening of the mould
Extracting the original
Creating a foundry model
Skin’s foundry model: Penciling? Applying? Brushes?
Casting wax (temperatures, timing, thicknesses)
Finishing the foundry model (retouche/modifications)
Spruing (montage) Down up, up down? Feeders/vents/round or square? /Masselottes
Lost investment mould (Italian method/chamotte/ceramic shell?) Square mould, round mould)
Burnout. Lost wax (oven, position in the oven/temperatures/timing)
Burying the mould (necessities/cautions)
Pouring bronze / Variety in “bronze”, Slow or fast? Spoon or crucible?
Breaking lost investment mould (timming, cautions)
Decochage (cleaning) & Sand blasting
Metal chasing/ Chiseling/welding
What is it