1. Copying kits is a crime that hurts original artists & producers. Help support your favorite artists by buying their original works. PlanetFigure will not tolerate any activities related to recasting, and will report recasters to authorities. Thank you for your support!

Vacuum! That is the question!

Discussion in 'Tools of the Trade/Accessories' started by archimede, Dec 18, 2018.

  1. Tommi A Fixture

    Country:
    United-Kingdom
    Janne

    Looks like a translation problem to me. Had the same issues when translating English to another launguage, it never quite reads the same.

    Cheers
    Tommi
    Uruk-Hai likes this.
  2. archimede Active Member

    Country:
    Italy
    Hi Tommi and thank you for the advice. Can you explain to me what you mean by a shallow tank?
  3. Tommi A Fixture

    Country:
    United-Kingdom
    shallow pour reservoir

    Is the distance from the top of the mould hole to the bottom of the hole where the over fill resin sits for the bubbles to escape in to. Mine are fairly deep and I also use long feeder sprues to reach down to the model.

    Tommi

    3.jpg 4.jpg
    Uruk-Hai likes this.
  4. archimede Active Member

    Country:
    Italy
    This is the tank I use ... is it too small? They are 11cm in height and 20cm in diameter and the pump is just a pump to create the vacuum, very powerful. See the photo.

    Attached Files:

  5. archimede Active Member

    Country:
    Italy
    I begin to understand .... the holes are three? and how and what tool do you use to pour the resin into the mold?
  6. Tommi A Fixture

    Country:
    United-Kingdom
    Where is the Vacuum gauge. You need to see and monitor the evacuation of air to make sure the process is working properly, not having one will not help solving any issues that you have as it could be an issue with the pump or an air leak during the procedure that is not pulling the correct amount of air. The Vac pump need to be adequate enough to pull 1 bar and and let the air back in before the on set of the maximum pot life of the resin.

    The size of the tank should not effect the end result if the pump is matched to capacity of the tank.

    My 50 Litre tank takes 35 second using a 20CFM pump
    My 26 Litre Tank takes 25 seconds using a 12CFM pump
    My 9 Litre takes about 20 seconds using a 10 CFM pump

    Tommi
    Uruk-Hai likes this.
  7. Tommi A Fixture

    Country:
    United-Kingdom
    The resin is mixed in a plastic kitchen jug and mixes with a plastic kitchen spoon then just poured out of the jug into the mould like pouring water.

    Tommi
    Uruk-Hai likes this.
  8. archimede Active Member

    Country:
    Italy
    The vacuum gauge is there .. please explain how you can pour the resin into the mold, maybe the problem is just the method of pouring the resin into the mold.

    Attached Files:

  9. Tommi A Fixture

    Country:
    United-Kingdom
    It only shows three because of the design of the piece in the mould requires this may because of the shape and allowing the air to escape in the appropriate places. I can range from just 1 feeder to mat depending on the complexity of the part you are putting into the mould.

    As Steve has stated you should only need 1 for a wheel.

    Tommi
    Uruk-Hai likes this.
  10. Tommi A Fixture

    Country:
    United-Kingdom
    The needle on the Vac gauge needs to be round to the 1bar position for about 30 seconds before letting the air back in.

    The pouring of the resin is the easy part, weigh out the two parts in equal quantities, mix and pour from the jug like pouring water.

    Tommi

    Image1.jpg
    Uruk-Hai likes this.
  11. archimede Active Member

    Country:
    Italy
    I understand, but as you can see in the pictures of the wheel the part of the hub has a hole due to an air bubble. As Steve says then I should let the air out of that spot. Quite right?
  12. Tommi A Fixture

    Country:
    United-Kingdom
    Also where is the rubber gasket seal on the top of the vac chamber or is it on the lid

    Tommi
    Uruk-Hai likes this.
  13. archimede Active Member

    Country:
    Italy
    it's exactly what I do, but I do not have the result ... look at the pictures of the wheel ...
  14. archimede Active Member

    Country:
    Italy

    sorry but the translation does not make me understand ...
  15. Tommi A Fixture

    Country:
    United-Kingdom
    The rubber seal between the tank and the lid. Is there one
    Uruk-Hai likes this.
  16. archimede Active Member

    Country:
    Italy

    yes the rubber seal is between the lid and the tank.
  17. Tommi A Fixture

    Country:
    United-Kingdom
    Ok... Wrap parcel tape around the top of the mould, over fill it and vac it to 1 bar for about 30 seconds then let the air back in slowly before a second vac. Let it set properly before removing from the mould and see how you get on.

    Tommi
    Uruk-Hai likes this.
  18. archimede Active Member

    Country:
    Italy
    I'll never make it ...:arghh:
  19. archimede Active Member

    Country:
    Italy
    (then let the air back in slowly before a second vac) I do not understand this sentence...
  20. Tommi A Fixture

    Country:
    United-Kingdom
    When the Vacuum gauge resisters 1 bar let the resin bubble for about 30 seconds, turn off vacuum pump then let the air back into the pot very slowly so it does not pull any of the bubbles back into the mould and they stay in the over filled resin

    Tommi
    Uruk-Hai likes this.

Share This Page

planetFigure Links

Reviews & Open Box
Buy. Sell & trade
Articles
Link Directory
Events
Advertising

Popular Sections

Figure & Minis News
vBench - Works in Progress
Painting Talk
Sculpting Talk
Digital Sculpting Talk
The Lounge
Report Piracy

Who we are

planetFigure is a community built around miniature painters, sculptors and collectors, We are here to exchange support, Information & Resources.

© planetFigure 2003 - 2019.