I need to be honest here; I wouldnt
make a very good journalist. Considering how long it has been
to update this saga, Id be fired for missing deadline after
deadline. I could offer an endless supply of pathetic excuses;
Im a one man band, I also have a regular job that takes
up a huge amount of time, etc, etc. But the fact is this type
of thing does take time, and probably more as Im figuring
this out as I go along. Ultimately, I became so driven over this
project, that all I wanted to do is get the first body done and
get the car running. In so doing, I sorta lost track with the
updates. Now that Ive got that off of my chest, lets
pick up where we have left off.
As you may remember,
we left off where the original body was turned into a plug. Lots
of shaping, sanding, and sweat. We got as far as getting the
plug into the first coats of high build primer, a polyester primer
to be exact. This stuff is like spraying a mixture of resin and
body filler. After letting it set up/cure for a couple of days,
the initial round of block sanding began. I started off with
80 grit on a long board and sanded it dry. Let me tell ya, this
is some nasty stuff. So bad that the disposable particle mask
wasn't cutting it, so I used my painting respirator to keep the
junk out of my nose, mouth, and lungs.
You will see
that this process takes off a considerable amount of material,
revealing low spots, high spots and any other imperfections in
the coats of Bondo that has been applied. Along the way while
I block out the plug, I had to apply pieces of tape to mark areas
that will need additional body filler; fiberglass is tough to
get smooth unlike a steel body. These things are so far from
perfect in the original form, I wanted to do all I could to improve
on the shape. To do this I had to be patient and do a ton of
block sanding. Even still, these bodies are not exact when measured
left to right and front to back. I've spent a fair amount of
time just trying to get it close, but don't kid yourself, up
until the last several years, many funny car bodies have such
issues.
Something I didn't
do before the first coat of prime was filling in the windshield
area. This will make the mold more structurally stable, and in
turn will do the same for the new body when removing from the
mold. Doing this wasn't too difficult. All I did was take use
a thin piece of plastic, about 1/8th inch thick, and cut it out
in the shape of the windshield. I just screwed it on like the
original windshield and proceeded to apply about 3 layers of
1.5 oz mat material from the underside. Once it was cured, I
just removed the screws and peeled off the plastic revealing
the filled in area. A little light sanding, along with filling
and smoothing the edge left by the cutout, and we are good to
go. This didn't require perfection since this area gets cut out
of the body when it is mounted.
After the whole
body has been blocked out, I went around and applied additional
body filler where ever it was needed. Looking at it will give
you the feeling of 2 steps forward and 1 step back. I've done
enough bodywork to become desensitized to this element of such
a job.
Of course I had
to go back to blocking out all of the areas where the filler
was added, and in some cases I would spray on a guide coat to
help. After this step was completed, it was time for some more
primer. The second coat really showed the detail of the effort
and work from all the sanding. By this time I'm feeling pretty
good about the results. This also followed some time to cure,
but the days of dry sanding are over, and the days of wet sanding
are upon us.
The wet sanding
process isn't much different than the first round of block sanding;
except I didn't have to deal with the dust. I started with 220
grit and just worked my way around the whole body. Again, there
are some spots that I find with some imperfections, and go back
with a spot putty to clean up. Those areas also receive some
220 action too. After the initial wet sanding I applied a few
more light coats of prime and knocked it down with 400 grit.
By now the primer
was built up enough and I didn't find any more obvious blems
and flaws, so I continued wet sanding, but now I'm using a 1200
grit paper.
Let me point
out something I've mentioned to those who are restoring an old
body to mount on a chassis. As you can see, you will go through
much of the same process to get the body painted. I've asked
that you consider letting a mold be pulled from it before you
paint it. You never know what will happen, but sometimes these
cars hunt for the wall. Having a mold available will make the
recovery a bit less painful.
Once the wet
sanding is completed I began polishing the whole body to further
smooth out the surface. The primer will develop a light shine,
but nothing like regular paint/clear. Nonetheless, smooth is
what we want.
After the body
has been polished up, it was time to apply one of many coats
of wax. You don't use just any kind of wax either, as the surface
must be able to withstand the caustic environment provided by
a thick layer of resin and glass. The wax I use is a high temp,
mold release wax. The recommended application calls for 10 coats,
and the reason being is you will miss small spots here and there,
and with the multiple coats, you should obtain complete coverage.
I'll tell you what, this wax isn't like you typical automotive
wax. This stuff is tough and will turn your arms into jello by
the time you are done.
Now we are ready
to begin the mold making process. This is an area that exceeds
any skill sets I possess, and will be filled with anxious moments
and plenty of second guessing. Since I'm doing this by myself,
and have very little to fall back on as far as the best approach,
I really took my time thinking this over to minimize any problems.
There is just too much work involved to have to go back and do
all over. I wanted to make sure that the procedures I'm going
to follow will have the desired results.
Negative draft is a term I did
learn, and it is good to know in making a mold. Basically it
means you make the mold sections part at the widest point. Imagine
making a mold of a sphere, you would have to do it in two sections,
and split it right down the middle, or you couldn't remove the
object out of the mold. The same holds true with the body, but
you have various contours to consider too.
I figured that I'd make the mold
in 5 sections; grill area, tail area, drivers side, passengers
side, and the top. I decided to begin with the grill and tail
areas first. Considering my lack of experience at this juncture,
if I make a mistake, having to do over wouldn't be as bad as
if I started on the top of the plug. Besides, with the nickname
I have, and the image of the one who is always chasing the roadrunner,
odds are that I'm going to screw something up.
The first step is using clay
to establish a flange area. Once again, lack of experience shows
in the beginning, but as I continued on, I found a better way
of doing this. The front flange looked kinda crappy, but you
will see the rear flange is nicer. Once I have established the
flange areas I covered the rest of the body with plastic to protect
from over spray.

First thing to do is apply a
release agent, or PVA to be exact. This is a very thin liquid
with a green tint, and when sprayed on the surface it will dry
and form a film that is like very fine food wrap. To apply all
I did was use my trusty JGA-502 primer gun; just pour it in and
start spraying. Remember when I said I'd screw something up?
Well it didn't take long. I said this stuff is kinda thin; check
that, its really thin. The first few coats were laid down
a bit heavy and started to run. So I just waited about 15 min
and peeled it off the surface.
Ok, let's try this again; apply
in very fine mist like coats. Let it set up a little and cover
again. Eventually the surface will have a light, green tint,
enough to let you know you have good coverage. Once it sets up
(depending on ambient temp) it's time to fill the cup for the
gel coat gun. I am using an orange/red tooling gel that is intended
for the surface of a mold. Now I've never used this gun, let
alone spray gel before. Talk about messy! After spraying the
section with enough coats, you let it set up where it is firm.
You don't want to let it get absolutely rock hard cured, but
you don't want to lay glass if it still has a rubber like consistency.
Once it is set up properly, I
started taking pre-torn sections of 1.5 oz mat material and laid
onto the surface wetting it out with a stippling brush. Did I
tell you how messy this job can be? Well, it's not getting any
better. After applying one layer I let it cure up before applying
the next layer. Since it was kinda warm while I was doing this
(you know, Florida is kinda warm year round), I didn't have to
wait very long. The ideal time to apply the next layer is when
the previous layer isn't warm to the touch from the chemical
reaction within the resin. You have to do it in this way for
the first 2-3 layers, otherwise if you laid multiple layers at
one time, the thickness of the material would get so warm from
curing, it would mess up the tooling surface of the mold. After
about 3 layers, you can go back and lay down multiple layers
at one time.
Once I finished laying up the
front and rear sections of and allowed to cure, I removed the
clay to expose the flanged edge and proceeded to clay up the
flange for the top section. By now I'm feeling more comfortable
with the equipment and materials in this project. Using the same
steps as I described before, I began molding the top section.
Since the top is a much larger
area, using a 4 inch brush would take forever. So I got to thinking,
there's has to be a better way to do this, and with that
I noticed my wifes paint rollers that she wasn't using
(at least as far as I could tell, she wasn't using them). Figuring
a roller would work as well as a brush, and cover a larger area
in less time, I poured some resin in a paint tray, loaded up
the roller and went to town. Boy, what a discovery this was.
I was able to make the top section in less time than the grill
area alone. I also found that the roller helped to minimize any
air bubbles.
Now you can probably see how
this is all coming together. After the top was cured, I removed
the clay to expose the flanged edge, and was ready to make the
sides. With some thin sheet aluminum I made an inside flange
for the wheel wells, and down the edge of the rocker panel. I
also cleaned up the flanges from the other sections, applied
some wax, but this time I left the wax on. Since the flanges
are not a tooled surface, any blemishes are not an issue. The
only thing that matters is getting the sections to separate when
the mold is complete.
Much like before, I completed
both side sections, working them together. I've become so used
to working the material, the process is going much smoother,
and with more ease. I can't say that it is any less messy, as
you can see in the photos what would be on the floor if I didn't
lay down cardboard to catch the resin that drips off. Even still,
my garage floor is trashed by now, but that is ok, I have bigger
plans for this place after my new shop is built. The same can
also be said for any clothing I was wearing. I found the best
thing to do is wear cheap shirts and pants, don't bother washing
them either. Just wear them till they get so nasty you just toss
them in the garbage. Trust me, you will get some resin on them,
and glass fibers will get worked into the fabric; you do not
want to put these in your washing machine.
After the last sections are cured,
I cut off any excess material that wasn't needed on the flanges,
ground the edges smooth, and drilled ¼ holes so I could
bolt the mold together after it is removed.
Anxiety is now building as we
are ready to pull the mold from the plug and see if my efforts
are successful, or if it will lead to emotional breakdown. Taking
a plastic dead blow hammer, I would tap the flanges to help them
separate. You could actually hear the sections release (thank
God) while doing this. Starting with the grill area, I took a
thin screwdriver and wedged it between the flanges, twisting
gently. I could hear the section as it was releasing from the
plug, and with little effort the section popped right off. The
finish is more than what I was hoping for.
Using the same
technique, I began removing the rest of the sections, and found
that I seemed to be successful thus far in making a mold. Granted,
there are some things I would have done differently, but it is
all part of the process. The next mold I make I'll do some things
differently in the way I reinforce it with wood and conduit ribbing.
But for now, I am thrilled with the outcome and I probably appeared
as Dr. Frankenstein did when he saw his creation was alive.
I wasn't done
yet with this, as I figured that I needed to glass in
some kind of reinforcement for the top section. When I removed
it, the piece seemed a little too flimsy for my liking. Grabbing
some 1X4 wood, and made a rib that went down the center, and
that kind of added some stiffness. Again, doing it over, I would
have done a few things differently. However, I really dont
see making more than a handful of bodies from this mold, and
wouldn't need to worry too much about how well it will hold up
over time.

The next step
is to clean the mold surface as the PVA has transferred over
from the plug. This stuff is water soluble, so with a hose, sponge,
and a bucket, the stuff washes right off. After that I had to
make a cradle/stand for the mold, polish the mold surface, and
apply several coats of wax, and then we'd be ready to lay up
the first body.
The Saga Starts -
Satellite Part One
The Saga Wraps - Satellite Part Three
E-Mail Dale: Dale
Smith
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