FILENAMES: PWR-WASH.GIF PWR-WASH.JPG DESCRIPTION: These are drawings for a shop built power washing nozzle designed by Ted Edwards . Ted provided the following description: ======================================================================== Low Pressure Power Washer by E.M. (Ted) Edwards See also PWR-WASH.GIF and PWR-WASH.JPG. I've been told by some that high pressure washers generate too much force for many applications. e.g. They can force water into places it shouldn't be - like wheel bearings. For many applications, I use a gadget I made up which takes water from a hose bib and shop air from my compressor and fires this out for washing. It seems to work quite well and hasn't damaged anything yet. It will suck up soapy water from a bucket. You can use that and then rinse with water from the hose bib. Materials: 1 1/4" pipe T 1 4" long 1/8" pipe nipple 1 2" long 1/4" pipe nipple 1 1/4" pipe male to 1/8" pipe female reducer 1 1/4" pipe male to male air fitting adapter 1 brass orifice 1 piece 2 to 3' long of 1/2" I.D. hose 2 hose clamps 1 1/2" barb to female garden hose adapter 1 Hose washer The inside diameter of the pipe fitting end of my air adapters is 0.300". Since I have a metal lathe, I turn down the end of a piece of 5/16 or 3/8" brass rod to 0.302", drill a #40 (0.098") hole into the end about 3/8", lightly chamfer the end with a file and cut off 1/4" of this. This piece, I press into the end of the air fitting. The nozzle is half of the 1/8" nipple and the water fitting is half of the 1/4" nipple. Save the other halves of the nipples for another unit or a sandblaster. I cut these in the lathe to get nice burr free ends and cut some ridges in the 1/4" nipple to hold on the water hose. If you don't have access to a lathe, I suggest drilling out the end of the air fitting to 5/16" (the next common size up from 0.300") and using a short length of 5/16" brass rod to make the orifice. Drill a #40 hole (use 3/32" if you don't have numbered drills) for the orifice. This should be as close to centered as possible. If this is not a good press fit into the air fitting, epoxy it in place. The press fitting can be done in a bench vise but use a washer to protect the edges of the orifice hole. Again, if you are lathe-less, the nipples can be cut with a tubing or pipe cutter or a hacksaw (try to keep the cut as square as possible) and deburr the cuts The grooves in the water fitting can be cut with a file or omitted. Assemble as shown in the photo. I use a couple of ball valves to turn on the air and water. I have one for water and one for air with hose or air fittings as appropriate. I can then use the valves elswhere as well.