SET UP.
A
D
B
C
H
G
I
E
F
MATERIALS
[A] 2× 4 lumber
( 1½"× 3½"), 3' long
[B] Magnet wire, #18, 1lb
spool (199') Mouser
Electronics #566-8075
(
mouser.com)
[C] Iron or steel rod (not
stainless), ¾" diameter,
2'– 3' I used a cold-rolled
steel rod, but purified iron
would work best.
Photograph by Ed Troxell
[D] Aluminum tubing,
inside diameter q"– 1",
at least 1' long Hardware
stores sell this, but I cut
mine from the handle of an
old snow rake I used before
global warming set in. Fishing
and pool nets also frequently
use aluminum tubing, and
check out yard and garage
sales for other sources of
cheap aluminum tubing.
[E] Power strip with switch
and fuse or circuit breaker
UL listed and rated at 12A
or more
[F] Fuse holder RadioShack
#270-739 (
radioshack.com)
[G] ¼" plywood, 4"× 4"
squares ( 2) or similar
material. I used scrap
epoxy-glass printed circuit
boards (PCBs).
[H] Time-delay fuses, 7A,
¼"× 1¼" ( 1+) It helps to
have some spares handy.
[I] Heavy-duty grounded
extension power cord at
least 15'– 25' long rated at
13A or more
[NOT SHOWN]
Wire, #14 or #16,
insulated, 3'
Hose clamp, small
Electrical tape
Epoxy cement
Wood screws, #8, 2½"
long ( 4)
Brightly colored tape
(optional)
Heat-shrink tubing
(optional)
TOOLS
Hacksaw
Drill and drill bits: E",
0", ¾", countersink
Awl or thin pencil
Screwdriver
Soldering tools and solder
Small knife or sandpaper
Multimeter or ohmmeter
that measures down
to 1/10Ω
103 Make:
