Basketweave Coil
Winder
Start with a layout on a sheet of paper.
Layout on a sheet of paper a 6" circle with a compass.
Use the compass to devide the circle into 13 equal apaces
Transfer the layout to the wood. Make a larger circle (7")
around
it.
That is where you will cut.
Make another 7" circle layout.
Cut the two circles out.
Clamp them togeather with some glue in between, and put a
couple
of flathead screws in to hold.
Make the screws flush or below the surface.
You can sand them down to make them even if you like, but it
is
not nessasary.
Drill out the 1/8" holes, but don't go all the way through.
I used a drill press, but if you are very careful you can use
a
hand drill.
It is very important that the holes be straight into the wood.
Drill out the center to clear the bolt you are using (3/8"
fine
thread bolt).
I used a bronze bearing, but it is not nessasary.
Drill out your base board to clear the bolts you are using.
Place bolt (3/8" x 2 1/2" fine thread) in base, then a fender
washer,
then the wheel, then another fender washer on top of the wheel,
followed by a locking nut. You can tighten up the bolt untill
the
wheels just "drags" a little, not too much!
The wire spindle is just a bolt and a nut on the top side.
I eliminated the rubber washer shown above. Just didn't need
it.
I put a couple of rubber feet on all four corners of the
bottom
to clear the bolt heads underneath.
This way it won't rock on the table. You could use wood block
just
as easy.
Insert the 1/8 fiberglass rods in and you are complete.There
are
a couple of improvements I made such as
#1 On top of the spool of wire I placed a fender washer, a
spring,
and a knob to put tension on the wire spool so it won't birdcase or
explode.
#2 I put staples in the side of the coil winder wheel to
start
the wire in.
After you get to where you think is enough turns, I put my
meter
on the coil and take a reading to see where I am.
Move the coil up on the fiberglass rods so you can tie it
with
waxed
dental floss or you can hot glue it.
After the coil is secured, pull the rods up out of the wood to
release
the coil from the winder.
The fiberglass rods should be replaced with 1/8" styrene
tubes.
This will help keep the Q higher on your coil.
This can be done by just pushing the fiberglass rods out with
the
styrene tubes.
After you are done, you can straighten the windings up. That
will
also help the Q.
