I like vapor blasted parts, but vapor blasting is really expensive here, because the machine, without the compressor is around $20K AUD (say, $13K USD) here, and so all of the guys doing the blasting have a pretty big overhead to pay, with a need for a big compressor, a dry blasting outfit for removing paint and rust etc before vapor blasting some items, rent on their shops, etc.
A few months ago I bought this cheap heated pressure washing machine.
Vapor blaster project 10 February 2025 by
Terry Prendergast, on Flickr
Vapor blaster project 10 February 2025 2 by
Terry Prendergast, on Flickr
While I was playing with it, I wondered how hard it'd be to convert it into a vapor blasting machine. I watched a few Youtube videos and saw that a lot of folks are turning their sandblasting cabinets into vapor blasters by using a submersible "Dirty water pump" to pump the grit laden water up to the blasting gun, and then using compressed air to blast the media at the items that need blasting. I needed a bigger compressor, so found this 15 CFM Australian built compressor which also has a bigger tank than my other compressor, for the bargain price of $350 AUD, on FB marketplace from a seller only a couple of suburbs over from me. It's about the biggest single phase machine available, and works very well.
Vapor blaster project 10 February 2025 6 by
Terry Prendergast, on Flickr
I bought a gun on amazon, along with a one way valve to stop water getting into my airline, and found a shut off valve in my garage.
Vapor blaster project 10 February 2025 3 by
Terry Prendergast, on Flickr
And a 1500W dirty water pump, that sits in a tub of water and blasting media.
Vapor blaster project 10 February 2025 5 by
Terry Prendergast, on Flickr
The machine has a clear viewing panel which gets hard to see thru when grit is splashed on it, so I added a garden hose to wash the screen from the inside.
Vapor blaster project 10 February 2025 4 by
Terry Prendergast, on Flickr
The dirty water pump has a "T" fitting on the hose, and I added a piece of hose with a restrictor in the end of it, and drilled holes in the hose to keep the media circulating in the tub, so it doesn't settle on the bottom. It's picking up some media, but I need to keep refining it until it picks up enough grit to really blast the bike parts.
I was thinking about it in the middle of the night, and think I'll add another pump, just to help circulate the media. I have another one in a box that I'll add this week. I don't like the clumsy ball valve tap on the airline, so have ordered a foot pedal to turn the air on/off. It's not perfect yet, but I think that with a little more fine tuning, it should work well, and all up I only have a few hundred bucks in it, and can still use it for it's original purpose as a heated parts washer.