clay modelling

can any RCA or coventry of leading school student tell me the complete process u follow and material grades u use for making ur scaled down car models for display.
I wud appreciate if u cud leak out the process right from scratch

Try www.chavant.com
as well as

http://forums.cardesignnews.com/eve/ubb.x/a/tpc/f/31060927/m/931100616/r/961101536

Pretty long process buddy but i ll give it a shot…

all vehicle models are either 1/3 or 1/4 scale depending on model size.

  1. after the design is finished and you re pretty happy. Autocad scale file is developed showing engineering info - engine block drive train, wheel hieght , ergonome positionind etc, just to make sure its not suitable just for midgets.
  2. Tape drawing is produced - black graphics tape on transparency same scale as model
  3. blue foam ‘core’ is cut to make up most of the interior bulk of the model, this isnt goin to be touched during the modelling phase, it can usually be cut crudly to the form of the car etc.
    This is mounted onto an MDF base and mounted onto a waist height modelling table usually with a 10mm grid sheet on it helping scale each side identically.
  4. the fun part… Chavant clay preheated in ovens so it softens to a malleable consistency, usually freakin hot too. Now KNEED the clay all over the body building up about 1-3 inch thickness all over. really need to be puched on HARD or itll fall off… Usually results in blisters all over your hands.
  5. Keep going and forming as you go. once satisfied that an even thcickness and form is applied, using a number of precut forms (silhoette of profile, front etc of car taken from dimensions of autocad drawing) start bulking up areas to fill template or removing - continue for month or so>>
  6. The use of ‘slicks’ super sharp metal formers - pretty pricey but can be made by hand, start to shave the cold and hard clay - because chavant is a modelling clay it has a wax base and allows you to shave it much like a candle…
  7. the rest is precision, using black film stretched over surfaces to check surfaces, black tape to check edges and lines…
  8. oNce fully happy wthat alls cool, a female mould is taken in a plaster of paris and bandgae mix, from this then you pull a male form.
  9. the final plaster mould is alot easier to transport, sand fill paint etc than the clay

Its a super interesting process, but super long… You 'll learn loads if you have the chance, just make sure that you have the right stuff, also ensure the room is well ventilated, the clay gives off super high levels of sulphur turning the air green extremely quickly,

Good luck

TOMfoolery
ex mdes transport student at cov