Step 1: What You'll Need
I discovered an old unused Stainless Steel flask in the back of the cupboard and decided to give it a go.
You need a similar container to what I used, but a plastic container will work as well. It just won't be as sturdy.
You will also need:
1. Drill bit corresponding to your chosen air coupler
2. Glue/Adhesive for securing and sealing fittings
3. Steel/Copper pipe with a OD of 4mm
4. Air supply that puts out at least 6 bar of pressure.
5. Fine dry sand
6. Something to sift the sand with ie. Your wife's cake flour sieve.
7. Funnel to get the sand into the container.
Step 2: Some Drilling Involved
Step 3: Some More Drilling
Step 4: Almost Ready to Sandblast
Step 5: Filling It Up and Blasting Away
Get your compressor running and make sure you have an appropriate space to do the actual blasting. Safety goggles, gloves and long sleeves recommended. Please wear a respirator or at least a good quality dust mask to avoid silicosis.
Plug the airline when you are ready to blast. Some sand will come out the nozzle at this stage, but not much (still enough to sting though, so be carefull).
Step 6: Start Blasting
Test it on some scrap first. At 8Bar it blows a hole through a beer can, so start at 3Bar and work your way up.