The Flat Pack Spray Booth
The idea of having a collapsable spray booth came to me when I realised that I needed a booth, but had nowhere to install one – and I didn’t think I’d use one enough to warrant the cost of a permanent booth. So, after a bit of design work and research I got busy with 5 sheets of coreflute and some tape and came up with this design. It’s not perfect and I’m sure if you have a go you’ll add your own improvements.
The booth is made from coreflute, which is easily cut by a sharp knife. Use a straight edge (like a level) and if needed you can sand the coreflute to remove any bumps. The tape I used was a PVC sealing and joining tape – 75mm wide, which is waterproof and sticks well to plastics. Velcro is used to hold the top to wall joining tab and the the back panel tabs.
The point of the flaps is to restrict the front of the booth, which will accelerate the air being pulled through the booth by the extractor fan. You only need an area large enough to be able to spray your piece.
The fan is the largest home extractor fan that I could easily source. I added a small piece of plastic to shield the spindle bearing and painted latex over everything to ensure it is waterproof. I also recommend plugging the fan into a RCD to prevent the possibility of shocks. The seal between the fan and booth is in two parts, a foam rubber ring on the booth stuck on with double sided tape and a rubber D ring seal that is attached to the fan housing. I also use two small clips and a pieces of string to hold the fan tightly against the booth.
The booth is designed to be used occasionally and outside. For regular use I recommend a professionally built spray booth with a water curtain and a greater movement of air. This design is quick to set up and clean, but the spray drift is simply vented out the back – not caught in a filter.
Tools needed are: snap blade knife, ruler, straight edge, marker pen
I sourced nearly everything from Bunnings.
Coreflute – 5 sheets (900 x 1200 x 5mm)
Fan – 250mm
Pipe – 1600 x 22mm plastic pip
Rubber D ring seal
Tape (PVC tape, Velcro tape and double sided tape)
Sponge rubber (400 x 400 x 20mm)
Fly mesh screen (metal)
Chux kitchen cloth
All up about $200
The other equipment I use is a cheap compressor from Bunnings and Ozito spray guns