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Bead to Vapour Blast Conversion.

Discussion in 'The Garage' started by Signal, Dec 29, 2019.

  1. Signal

    Signal XS650 Junkie Top Contributor

    Got the blaster up and running, no air solenoid yet using a ball valve to control the air. It’s a bit tricky using one hand in the glove and the other out.

    It took some time to get the air needle right, at the moment it has a 2.5 mm hole and a 10 degree taper at the end. It looks nothing like the one in the YouTube clip but works well.

    Also fitted a back flow check valve I decided I needed to when during testing I saw slurry coming back out a disconnected air line.

    It took some time to get the slurry pump positioned so that there was minimal dead media building up in the bottom of the slurry tank.

    It appears to be faster than bead only blasting and after a hose down it looks good right out of the cabinet. I used to spend a fair bit of time burnishing the bead blasted surface so that it did not show finger marks.

    The glove seals leak a bit where they fix to the cabinet but apart from that no leaks (so far).

    All in all I am calling this experiment a success.

    Just as well because I have decided to clean another set of cases and choose the best or least worse for a new scheme.
    Some before and after photos. It really needs another quick going over to get the finish consistent .
    2020_0206RD7000010.JPG

    2020_0206RD7000011.JPG
     
  2. chewblanca

    chewblanca Jack of Few Trades

    What pump did you end up using? Looking at doing this conversion to a small bench top cabinet.
     
    gggGary likes this.
  3. Signal

    Signal XS650 Junkie Top Contributor

    The pump I use is an AL-KO Drain 7500 classic. It is a submersible effluent pump; the thing to watch for is the particulate size the pump can pass. If the size is too small the abrasive material will chew out the impeller in no time.

    At present the pump has done about 4 hours work so its early days but the only problem so far has been after it has sat for a while beads blocked the slurry agitation outlet. Easy fix with a bit of wire and it was away again.
     
  4. chewblanca

    chewblanca Jack of Few Trades

    I'm in the process of building one, need to set up a drain in the cabinet and the agitator system.
     

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