Vapor blast cabinet build.

I have one that I bought so maybe I can give you some insight,

The cabinet is nothing to fancy the only thing that is unique it that it is one piece so you don't have to work about sealing the whole thing.

The vapor honing or blasting method works with a couple important components and this is really where the magic happens.

First, you need a slurry pump this usually sits at the bottom of the tank and performs to tasks, one it keeps the water/glass beads mixed so that the glass beads don't all just settle to the bottom, and two it pumps the mix up to the gun.

At the gun, you have the water/glass bead stream (^previously mention^) merge into a high flow air stream. This airstream is usually at high CFM's (cubic feet per minute) meaning you need a big compressor (60+ gal) rated at 15+ CFM This is convenient if you already have a big compressor but if you need to buy one it can be $600+ ( I Paid $2k for mine but I went a little overkill.

Figure some way to toggle the pump and airstream on/off simultaneously and you have a vapor blaster. This water to glass bead ratio is important and the size glass bead too but that is just details.

I paid $6k for my setup and I got the economy version... That being said I can't see this costing more than $1000 - $1500.

I will say once you have one you will love it.

https://www.howtomotorcyclerepair.com/diyvaporblasterbuildplans/

This guy has a DIY vapor hone cabinet. He sells the plans for $70 I believe and has a few option such as an open or closed loop system along with a Econo version. It looks like you can build a DIY cabinet for $500-$1300.