Direct casting with FTX green

  • Casting the FTX  green with the R&R Plasticast
  • I read and tries almost every forum regarding the procedure.
  • I’m not a jeweler, I never casted before I got the 1200, my oven is new but the control is 50-celsiuslsius stages
  • And I have to hand control 50% of the time.
  • from this, you will understand that the accuracy of the temp is not as important as people thing.
  • I build the tree with ventilation tube to let the gases free way out
  • Cure of the print (green)
  • Short wash with used IPA
  • Short was with cleaner IPA
  • 3 min wash with water in the ultrasonic cleaner
  • 120 min in the oven in 150 degree celsius ?????? last one was totally broken I stopped doing the oven
  • 1.5 – 2 hours in a nails ultraviolet curing machine (the 1200 bulb was long gone)
  •  

  • Investment R&R Plasticast 38%

  • I work with 2″ x 2.5″ or 2.5″ x 2.5″ size flasks  38% plasticast 
  • And leave it overnight

  • Burnout all temp in celcius

     
    The one and probably the only important change that I did
    Is adding a stream of air into the oven and under the flask
    I use an aquarium pump and pump the air under the flask
    All the burnout the pump is on and the flask is facing down 
    the air gets into the flask and help the burn of the plastic 
    when I reach to my MAX temp of 750 degree I turn the pump of and turn the flask face up
     

    Vacuum

    when in 500 degree and when in 750 I use vacuum to clean the investment tunnels
    No Air pressure!  Vacuum

  • Burnout  

  • 30′- 60′ –  200 wax
  • 20′ –  400
  • 30′ –  550 Vacuum, if resin is totally gone go to top temp skip 600c
  • 30′  – 600 Vacuum
  • After all the resin is gone and vacuumed rais to top temp
  • 90′- 120′  750c degree Vacuum after 20min
  • 45′-60′ casting temp
    When all the resin is burned I raise to 750 degree if it is in 500 degree I will skip the 600C
    I put a small part of print inside the oven and when it is fully burn and gone I will flip the flask face up and turn of the pump
    My last cast was 50% new 50% used (casted and very clean) 14k gold
    It come perfect used a small 2×2.5′ flask.
    I hope it will work for you.
    You are surely more experienced in casting then me you know how to burnout and will probably make it shorter
    Just burn the green fully, use pumped air and clean the flask with vacuum
    Please do not give it to people you are not sure they are not part of 3D Systems (like the agent sold you the machin)

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I hope it helps,

Rene.