DIY Soda Blast Gun

  1. Onoff Member

    Messages:
    987
    Location:
    Sevenoaks, UK
    Off down another rabbit hole.....

    Wanting to blast this aluminium mower gearbox I ran out of blasting media for my cheapo Lidl Parkside sandblaster. It's OK but you have to give it a shake now and then.

    Over on a mower forum one of the gurus there suggested home brew soda blasting and that I search out "pop bottle soda blaster" builds on YouTube.

    I tried at first putting soda crystals through the Parkside gun but it clogged/didn't work.

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    So...after a rummage in the garage and delve into the collected scrap and I came up with:

    - a cheapo blow gun
    - a copper tap connector, 15 down to 10mm
    - an airline connector
    - the plastic bottle the blasting grit came in from Lidl

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    I found if I unscrewed the end of the blow gun then an airline adapter screws in being the same thread.

    [​IMG]

    I cut the tap connector down roughly at where it narrows down and found that slotted over pretty well, the airline connector.

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    I figured if I heated up the copper flare with the MAPP torch I could tap the airline connector into it.....and that's where it all went wrong! The copper bent like a banana!

    [​IMG]

    Plan B!

    Another rummage came up with some heavy wall chrome steel tube.

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    The airline connector taps home nicely into the end of the steel tube. This junction mind is NOT airtight but we have a solution to that I think!

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    More later!
     
    a111r and Parm like this.
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