A time-consuming,
but exciting time, because you’re almost
ready to begin playing on your new track! Should you decide you’re
NEVER going to move the track (until the building falls down) it doesn’t
matter how you do this.
A word of
caution…Track braid tends to wear in the flat corners
more readily than anywhere else on the track and you should most certainly
separate the braid in the corners from that used on the straight-aways.
You will virtually NEVER wear out the braid on the straight sections
and only rarely in high banks. Should you, at anytime, wish to move
the track, sell and replace it with a different design, the wisest
move is to braid each section separately. (See Illustration
#13.) For
many years, track builders have used an "overlap" method
(see Illustration #14) but this is counter-productive and makes a mess
when you do need to rebraid. (See section on track rebraiding.)
Should you
elect to lay the long strips of braid the full length of your main
and secondary straight-aways, your next task is to roll it
off the spool, stretching it the length it needs to be, and, leaving
at least an extra 12" to 24" on either end. Cut it with a
sharp knife, diagonal side cuts, tin snips or an old pair of scissors
you won’t need later for other tasks. ALWAYS leave enough on
each end to go down through the pre-drilled holes, through the thickness
of the track, and still have enough to work with to make your sub-surface
electrical connections. If you’re building an 8-lane track and
the slots for the straight sections are all the same length, cut 16
pieces of braid at least two feet longer.
There are
a couple of different ways to apply the glue to one side of the track
braid. Two (or more) strips at a time can be carefully
rolled around old (6" to 8" diameter) cardboard carpet tubes
and held in place with masking tape. If you have the room (and enough
tables, cover them with plastic sheeting. Lay out all 16 strips, taping
them every two or three feet with a strip of masking tape. Pour a quart
of contact cement into a paint pan and thin with one-half pint of lacquer
thinner. Stir until thoroughly mixed - it should be about the consistency
of light pancake syrup - and using a paint roller, apply the cement
to the braid.
While this
is getting tacky, either you, or a helper, apply full-strength contact
cement to both sides of the braid recess, but do not recommend
prepping more than two lanes at a time. The full-strength glue is applied
to the braid recesses by using a clean, plastic mustard or honey dispenser,
which has a small spout. Again… VERY IMPORTANT - try
not to allow any glue getting down into the slots. Keep the tip of the plastic dispenser
toward the outside lip of the braid recess and away from the slot.
If you slip, wipe up immediately with a rag, but don’t use any
cleaner (Coleman fuel, Naptha, lighter fluid, etc.) until you’ve
completed laying the braid on that lane.
While the
contact cement in the braid recess is setting up and getting tacky,
go back and re-coat the braid with the thinned stuff and the
roller. By the time the braid glue is "tacky" - almost dry
- peel up two strips at a time. Being careful to keep them apart, lay
them well away from each other on the track. Even new braid can sometimes
get slightly frayed. If you have tender fingers you might want to put
on a pair of gloves for protection.
Start with
one strip at a time, and put a bend about six inches from the end.
Feed the end down through the pre-drilled hole and press down
onto the recess glue. Guide the strip of braid with one hand and press
with the other, pushing it to the outside of the routed recess and
as far away from the slot as possible. Be very careful to keep the
braid from making contact with the glue in the recess until you’re
ready to press it into place.
If contact is made between the two pre-glued pieces (or the other
strip of braid), it will pull the glue up and off the recess and you
might have to reapply new glue to that spot, holding up your operation.
By the time you reach the other end of the straight you should have
over a foot or two of excess braid. Trim off all but a foot or so and
discard, then insert end through the hole and pull it down through
until flush. Do the other side of the same slot before proceeding with
the next lane.
Once all eight lanes are braided, use a heavy braid roller or the
edge of a yardstick and press vigorously in the direction of travel
until it is all smooth and flat. Repeat this operation in the turns
and banks. Naturally, the outside turn braid needs to be longer than
those on the inside, so carefully measure before you cut any strips.
In the banks and turns, I would only do one lane at a time.
There’s no need to be in a reckless hurry now, so take your
time. Once all the braid is laid and pressed, now starts the really
fun stuff…making all your electrical connections under the track! |