Article 14

Last month, I discussed getting the E-Type body shell up on to the rotiserie so I could access the underside.
Maybe that wasn't such a good idea because the underside was pretty grim!

A fine web of cracks was visible in the "re-sale red" paint job that was on the car. In many cases this could
indicate excessively thick layers of body filler or "bondo". I hooked up an aggressive wire wheel to my 7"
grinder and started to cut away the layers of bondo. On the underside of the trunk it was up to 3/8" thick! What
was revealed is commonly described by the Brits as a "bodge". This loosely translates as poorly executed
bodywork! Moving forward to the floor pans, it wasn't a case of poorly executed bodywork, it was more a
case of the undercoating and sound deadener material being the primary remaining structural element, with
much of the metal already reverted to its native state of rust. So it looked like major surgery was required.

At this point, I reviewed the approach I would take. The parts houses all have nice pictures showing the body
shell consisting of its constituent parts. I understand that the UK firm of Martin Robey has the rights and the
tooling to reproduce E-Type body parts. After speaking with some of the suppliers, I found that not all of the
parts are available, just the ones that are most commonly requested. This meant that I could order a new trunk
floor and floorboards but maybe not some of the smaller pieces. Ordering the trunk and floorboards
pre-made seemed like a good way to go since these parts are rather intricate . Other surfaces that I needed
on the underside of the car were either flat, or curved in only one direction. I felt that I could best work with
these by cutting out the rusted area and welding in a patch panels. I purchased several books to read and
from which to gain confidence. One was "How to Restore Classic Car Bodywork" by Martin Thaddeus. Martin
is a Brit and all the cars featured in the book are British. The book is well written and has numerous photos. It
helped give me some confidence to proceed.
At this time, it was apparent that some more
tool purchases were in order. As my wife has
observed, that is both the beauty and the curse
of these projects, depending on your
perspective. My first purchases were pretty
straightforward. I bought a set of sheet metal
hand shears (both right and left handed), an air
operated shear for straight line cutting, a set of
body hammers, and assorted dollies. I
purchased a sheet of both 16 gauge and 22
gauge steel. I purchased a sheet metal brake (a
brake is a tool that bends sheet metal at right
angles to itself) and a roller, which can bend a
piece of sheet metal into a curve. Finally , I
needed a way to stick everything together. That
called for a welder. There are lots of articles on
the internet about welders for the restoration
hobbyist. I decided on a MIG welder as being
the most practical. I settled on a Miller unit,
which is a brand name that I see at work at lot.
Since I have 220V AC available at my shop, I
went for a medium duty unit that runs on 220V. I
searched the internet and found the best price
and had a unit shipped to my door.

Now one can't just start welding and be an
instant expert. I obtained a large quantity of
scrap sheet metal pieces and proceeded to
practice. At first the results were truly awful but
after a few days of practice things were looking
up. But as soon as I tried my first patch piece
on the car, things went to hell again. Working in
situ with 40 year old steel adds an element of
difficulty, that's for sure. I have since decided
that my ability to butt weld, where the two
pieces of metal are placed end to end, is just
not up to the task yet. But there is another style
of weld known as a lap weld, where one piece
laps over the other, where I am able to avoid
burning holes through everything. Key to setting
up for a lap weld is a tool called a flanger.
Simply put, the flanger places a slight offset jog
along the edge of the sheet that is about the
thickness of the adjoining sheet such that when
the sheets are lapped together once side
becomes flush (at the expense of the backside,
which is not flush). In this way, once the welding
is completed and ground down, the two
adjoining surfaces can be brought level and
with a little work, the joint will be invisible after
being painted. Martin Thaddeus goes into all of
this in his book. For me, this is the way to go.
Another aspect of sheet metal work is the spot weld. When originally constructed, many cars including the
E-Type used sheet metal lap joints that were spot welded. In this process, two electrodes are brought together
on both sides of the joint and an electric current is passed through between them. The current heats up the
metal enough that the two pieces melt together and fuse in a round spot pattern. Its really great for mass
production welding and this is probably what you are seeing when you see those pictures of robots hovering
over the assembly line and moving in to attack with a great flash and puff of smoke. The problem for the
restorer is that in order to remove a complete panel, literally hundreds of spot welds must be broken down and
removed so that the two parts may be disassembled. I started by using twist drill bits applied to the center of
the weld. This works OK but the result is a fairly large hole left in both parts. A much better tool is available
from Eastwood in the form of a spotweld cutting tool. It is basically a small hollow bit with cutters on the
circumference. It cuts a circle around the spot weld, into the sheet metal which is generally softer than the
actual welded area. If once is careful, you can cut though just one of the two thicknesses. A gentle whack with a
flat chisel will prize the two pieces apart. At least one side of the joint remains intact and can be reused. I have
now removed enough spot welds in the process of removing the trunk floor and the main floorboards
assemblies to know that removing spot welds is not my favorite recreational activity. But it is a necessary evil
of getting the job done.

So at this point I've bought a lot of the items necessary to do sheet metal work. I'd guess the cost ran around
$1500. But based on a recent story I heard about a body shop that charges $5000 a week to do body work on
E-Types I'd say I'm still way ahead of the game. Next month I'll relate more details about removing all the rusty
panels and replacing them with sound material.