Lost wax casting a emblem

Discussion in 'Investment casting Block method' started by DavidF, Aug 19, 2017.

  1. Rtsquirrel

    Rtsquirrel Silver Banner Member

    I'm currently working out of a bag of Prestige Optima by Certus.
    Www.certus-int.com
    Needing a burnout kin & a place to keep it when not in use,
     
  2. Rtsquirrel

    Rtsquirrel Silver Banner Member

    I priced the perforated flasks on fleabay, $35US + shipping. I could make the chamber. Not too sure about the flask itself.
     
  3. joe yard

    joe yard Silver

    I have a question. Being ignorant on the subject.
    I have a 2 Hp blower very similar to the one pictured. This blower mover a large volume of air and produces a fair vacuum.
    I originally used it in a vacuum sorting machine but now it collects dust.
    My question is would such a blower have any use in vacuum casting?
    Joe blower.png
     
  4. Rtsquirrel

    Rtsquirrel Silver Banner Member

    I'm probably not the best person to answer that. But that looks like a monster. I picture it being able to suck a bouncy house into oblivion like the place at the end of Poltergeist.
    I use this one https://www.harborfreight.com/25-cfm-vacuum-pump-98076.html for my vacuum chamber (investment & molding silicone). I was hoping it could do double duty for vacuum casting, if I ever stumble down that trail.
     
  5. joe yard

    joe yard Silver

    The vacuum pump you listed will pull a much stronger vacuum. The one in the picture, like mine. Does not produce near as high a vacuum. It has a 2inch NPT in and out that moves a large volume of air. If you try to restrict the input with your hand. It will pull hard enough to cause moderate discomfort immediately.

    Joe
     
  6. Jason

    Jason Silver Banner Member

    Ya need a vacuum pump that will go WAYY DOWN..... Here is the cheapy I use. https://www.harborfreight.com/25-cfm-vacuum-pump-98076.html
    I also suggest a plastic dome for vacuum work. Ya sit it down on a silicone mat and suck from the bottom. A plate under it with a vacuum hose fitting and a hole in the silicone mat. DONE!
    Have fun vacuum crap like pudding, styrofoam peanuts and cat turds. Hours of cheap entertainment. Never apply vacuum from one of these pumps to your hand or other body parts. *ahem:eek:
    Bad things can happen to you.;)
     
    Rtsquirrel likes this.
  7. DavidF

    DavidF Administrator Staff Member Banner Member

    You might be able to use it to pull a vacuum on the flask to help get the mold to fill, but its very unlikely it can be used to vacuum the air out of the investment.
     
  8. Jason

    Jason Silver Banner Member

    I take it you are referring to joes whatever that thing is....right?
     
  9. Jason

    Jason Silver Banner Member

  10. Rtsquirrel

    Rtsquirrel Silver Banner Member

  11. FishbonzWV

    FishbonzWV Copper Banner Member

  12. DavidF

    DavidF Administrator Staff Member Banner Member

    That thing is one awesome blower. We use them here for dry polymer transfer to a batch tank. Id love to get my hands on one...
     
  13. crazybillybob

    crazybillybob Silver Banner Member

  14. Jason

    Jason Silver Banner Member

    Yeah I saw the insane shipping and thought I should buy 3 of these!:rolleyes: I had posted an edit. Funny it didn't take. oh well. F it.
     

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