PVC Bobbin Air Core Magnet
Using # 39 AWG copper coated wire, also known as magnet
wire. Single strand. Very easy to construct. In the
center is a round PVC Pipe, glued to top and bottom of
Multi-strand coil for a
efficient DC pulse motor!
Coil bobbin made of
PVC sheeting and aluminum for a motor base. Wood can
also be used which works very well.
We wound these 2 coils using
a table top drill press from Sears.com
We had to modify the drill press a bit by changing the
high rpm AC motor to a 90 VDC electric conveyer belt
motor. The speed is adjustable. The parts can be
purchased at Grainger.com. We found that it is best to
wind from speeds 0-100 rpm's.