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Step 13Finishing Touches
Finish up by making sure there are no sharp edges(!) , that the glue is well reinforced, and that the Blade and Magnetic coupler move freely with the Magnetic Disc Pack which is inside the CD Case. I connected a brass garden hose shut-off valve at the air inlet and used an adapter to go to garden hose from the air chuck. I can easily convert from water to air pressure and back.
Please remember that running this turbine on air pressure is a very dangerous thing...it will certainly BLOW UP like a bomb with shrapnel if used on straight 120 psi without a load. If conditions are perfect, this magnetic version may withstand 11,000 rpm or more before blowing. But conditions are seldom perfect, and chances are that the CD's in the Magnetic Disc Pack could separate at much lower rpm than 11,000. Try to design the guard and CD Case to take this into account. Don't do demos of this turbine and expect it to be safe each time just because it was the last few times. Plastic discs can both flow and stress-crack and can fly apart at any time. Take all precautions!
Please remember that running this turbine on air pressure is a very dangerous thing...it will certainly BLOW UP like a bomb with shrapnel if used on straight 120 psi without a load. If conditions are perfect, this magnetic version may withstand 11,000 rpm or more before blowing. But conditions are seldom perfect, and chances are that the CD's in the Magnetic Disc Pack could separate at much lower rpm than 11,000. Try to design the guard and CD Case to take this into account. Don't do demos of this turbine and expect it to be safe each time just because it was the last few times. Plastic discs can both flow and stress-crack and can fly apart at any time. Take all precautions!
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