Next, the hardware shop for some 42mm UPVC pipe. My Negative Ion generator is just a bit big, so some careful trimming till it was a tight fit. (They maybe a different size now?)
|Photo: Oatley Electronics.|
235S32BSP40 screwed metric converter.
260/32 locking rings
25mm conduit plug.
plus about 100mm of bronze flyscreen.
|screwed metric converter|
From Jaycar, you will need:
Switch of choice, for on off control
9volt battery clip.
Next, you have to find plastic container for the grass fibres. Some supermarkets used to stock a plastic flour shaker (now hard to find, around $5) but Coles have a cooking string container that might work.
Carefully cut a hole in the bottom of the plastic container, just big enough to fit the screwed metric converter. You have place one of the locking rings on the converter, fit through, then add the second locking ring to hold the container in place.
a hole needs to be drilled in the conduit plug, and the pale red silicone coated wire, has to be threaded through. This has to be soldered to the bronze flyscreen. (Do not use the black powdered coated screen as it will not work). Take the containers plastic lid and cut out a hole to fit the flyscreen into. Can glue in if required.
Next, you need the wiring diagram.
You will need two holes in the 42mm handle tube. Wire up battery clip and switch, then insert the ion generator into the tube. There should be two wires coming from the tube, to solder together, and add some length, then the alligator clip.
The converter's plain end, may need packing for a tight fit when inserted into the tube.
Add nine volt battery for around 12KV (Remember: high voltage, and your parts must be plastic, except for the mesh).
Time to test. Add glue to the area and a nail (earth), attach alligator clip to nail, fill container with fibres, turn on, and shake over the area for grass. If all is working fine, the fibres should all be standing upright.
I have used down to 2mm fibres, but, generally I turn on the unit before turning upside down, so the fibres are charged before they fall out.
So there you have it. If you cannot made one for less than $40, then go out and buy the Noch version for around $300, and it will not be as good, as from many photos I have seen, it has trouble charging the fibers to get them to stand upright. There is another unit available from War World Scenics in England: around $200.
|Photo of my second spare unit.|