










Prefect your modeling skills here.
Zimmerit shoot out.

By Dekker Zimmerman
I recently got into 1/35th German WWII armor and quickly found
out that many were
coated in a material called zimmerit. This was a paste that was
applied to tanks and armor
to prevent magnetic mines from sticking to the hull. The paste
was a mix of materials that
when mixed resembled concrete. It was spread with a trowel in
various patterns to keep
the weight down. This ranged from horizontal lines to a "waffel" pattern.
I soon realized that most kits did not have this feature molded
on. Model companies had
problems molding the texture to look hand applied. The one option was to apply this on
models by
hand. Dragon models is releasing models with a new technology called slide
molding and can replicate zimmerit fairly well but only have a
few kits out.
(see the kit review page for details on one)
I decided to take the plunge and try my hand at modeling this
texture. There are many
ways to do this including putty, epoxy putty, pre-made resin
sheets and photo etch.
Below is a brief description on each
1. Putty- Many forms and dry times (discussed below)
2. Epoxy putty- A two part thick gum like material that has a
long dry time but is thick
when applied and needs to be textured by a screwdriver blade or doe roller.
3. Pre-made resin sheets- These are very thin flexible resin
sheets with molded in texture
and cut to he shapes in the model. These are a fast way to apply zimmerit
but you will
still need to know how to use the putty method to fill in gaps.
4. Photo etch- These are thin metal sheets cut to the
shape of a models parts. They are
hard to apply on complex surfaces so you will still need to know how to use putty.
I experimented with six different types of putty raked with the
Tamiya brand of
zimmerit tool. This tool is a must if you are simulating the scrape method of zimmerit.
Some putties dried to fast and caused "tearing" and others
attacked the plastic to hard.
The six types of putty I tried were:
1. House hold spackle, for wll repairs
2. Tamiya polyester putty
3. Testors white putty
4. Squadron white putty (green was just too gumy)
5. Molak Stuco
6. RPM's Red Bondo
I taped off 1"x2" squares on black Evergreen styrene and spread
a glob of each putty on
to the squares the "raked" them with the Tamiya 0.7 tall rake. I raked a 1/4" then slid the
tool down
slightly then dragged then up 1/4" ect. to simulate the real pattern on
German armor. The results were as follows:
1. House hold Spackle

This was bought at a hardware shop. It is water soluble and has
a problem sticking to
flexible parts. It dries quickly, in a few minutes, it
will be to tough to rake and will tear.
It spreads VERY thin and might be a good scale choice for 1/48th armor. No odor.
2. Tamiya polyester putty

This putty is VERY toxic and the fumes are horrible. This putty
had the longest work
time as you mix 2 parts to make it and spreads smoothly. It had
the best performance
while raking but the smell will drive you out of you model room immediately! Too bad.
3. Testors white putty

This putty is by far the cheapest but skins over almost
immediately causing tears.
This sometimes looks like zimmerit damage but is hard to control. Low odder.
4. Squadron white putty

This putty dries quickly and has some tearing. It bites into the
plastic well with out
melting it. I found it easy to repair when dry as it sets up
strong and will guide the
rake well for touch up. medium odder. This is the best of the 6
in my book.
5. Molak stuco

Molak stuco is VERY smooth. and spreads well. The down side is
it seemed to blend
together in places. This putty is also hard to find. Low odder.
6. RPM Red Bondo

This is a auto body filler found at auto parts stores and was
also sold as Testor Red Putty.
This putty is ideal for filling gaps BUT when I tried to rake it
it had immediately attacked
the plastic underneath and the rake scored the softened plastic
below. It also blended
together a bit. Not a great choice for zimmerit but great for seams.
The first choice is buy a Dragon model with molded zimmerit
The second choice is to buy the thin resin sheets that are
pre-molded
The third choice is using putty.
My conclusion was that for my style of modeling the squadron
white putty worked the
best It only needed a bit more dry time. Here is a photo if it applied to a
Tiger I gun mantlet.

I hope this helps in you modeling.
For more info on zimmerit visit
www.panzerworld.net/zimmerit
DZ.
Extra! Extra!
Knock-out pin killer revealed!
Have you ever had problems with those pesky ejector pin marks
(the little round marks)
on your model parts? Well fret no more for our own club member Paul Benko
has rescued
us all. He has come up with a easy to make tool to help. At a
recent demo he did for the
club he showed how to use small brass rod with a small piece of
double side mounting
tape stuck to it then with a small piece of washable sand paper
stuck to it makes a micro sand stick.
To top it off he showed how to take a cheap electric tooth brush
and turn it into a micro orbital sander.
Step one: pull out all the bristles of the brush with pliers.
Step two: cut a piece of the double side foam tape, in the shape
you want, to the rotating head.
Step three: cut a small piece of washable sand paper and stick
it on the tape.
Step four: DESTROY ALL EJECTOR PINS! Last photo shows the mark
on the left is wiped out.



The math of models. Here.
Creating realistic palm trees.
Here.
Federal Standard (FS) conversion chart.
HERE.
Airbrush resolutions.
Cockpits the easy way.
Filling without sanding.
Aircraft panel lines.
IPMS contest guide.
Quick tip:
Big decal job? Next time use a coffee cup warmer to keep a glass
bowl of decal water warm constantly. Cost : $10, ease of decal use: priceless.
Laws of Modeling
101 by Stephen T Lawson
.) Every modeler's desk comes with a black
hole beneath it, that swallows parts. Only on rare occasions does it see fit
to spew one back at you.
a.) Only the highly scratchbuilt parts or ones that have no replacements will
fall into this black hole
b.) The probability of dropping a part is inversely proportional to the size
of the part.
c.) The closer the match of a part and the floor, the greater the probability
of dropping the part.
d.) A dropped part will bounce to the most inaccessible area of the room.
(this also allows you to mark the boundaries of your black hole. (Note:A
dropped X-acto knife will visit your foot before obeying d.)
e.) As soon as you quit looking for the missing part you will probably step on
it.
2.) The time it takes to build a kit is in direct proportion to the amount of
reference material used and often impedes further builds.
a.) The more unbuilt kits you have on the shelves the fewer kits you actually
build.
b.) Unbuilt kits expand to fill available space.
c.) Reference materials expand beyond available space.
d.) The more second source reference materials (published by non-modelers)
adds confusion, not clarification.
The solution here is to choose a 'school of thought' from informed sources.
3.) No matter what the size of your modeling desk is, 99.9% of all your
modeling will be done in the 5 square inches of the center front edge.
4.) Dollar for dollar and pound sterling for pound sterling the absolute best
value is a figure of a seated pilot. Simply put 'it fills the hole' where some
modelers would rather replace aircraft cockpit details (because their too
'Fiddly' or wind up in the 'Black Hole') with a pilot figure.
5.) No matter what your method of sealing your paint bottles it will go bad
two days before your intended project.
6.) The amount you pay for a new paint brush is directly proportionate to the
probability that you will inadvertently dip it in your coffee or a blob of
super glue or both.
7.) What ever you purchase for your hobby will go on sale a week later.
8.) All manufacturers hold their releases until they are absolutely sure that
you just spent six months scratch-building your version.
a.) There is 'NO' such thing as a perfect kit.
b.) Half built vacuform kits impress people with your skill.
c.) A completed Vacuform just looks like another model.
9.) There is no substitute for a well oiled Dremel motor tool.
10.) Humbrol paint will always be the best paint in the sorriest container.
11.) X-acto scars on your fingers are a given. Learn to live with them.
12.) Sooner or later you should buy an airbrush. The simpler the better.
13.) Half of the washes you apply will be done on the areas of your paint
scheme that are not dry yet. But you'll do it anyway just to be sure.
14.) Lacquer thinner odors can be smelled by your family members from the
basement through a solid core door.
15.) If you find something you like, buy a lifetime supply. Because they'll
quit making it just to spite you.
16.) The kit instructions, may be very interesting, but are 95 % of the time
irrelevant.
17.) Tossing a finished, expensive model kit against the furthest wall in your
basement at 90mph is the most sincerest form of self-criticism. But doesn't
live up to the acclaimed rush that is supposed to follow.
18.) You will NEVER get all those models built!
19.) The probability of finding an error in a built model increases
exponentially after you've entered it in a contest.
a.) The more important the contest the greater the error.
And now a pop quiz what is the 'Theorem of Progression' ?
The question was; what is the Theorem of Progression ? Much like the events
that cause a stooge that falls from a flag pole mounted outside a window of a
17 story building the 'progression develops' thus.
1.) As soon as you scratchbuild a model, a manufacturer will release a
vacuform kit of it.
2.) As soon as you finish the vacuform kit, an injected molded version (this
includes slush plastic, resin or metal) of the prototype will be released.
3.) As soon as you convert the injected molded kit of the prototype to the
version you want, your version will be released by another manufacturer who
will, include the refined versions of the decals, resin or photo etch that you
had suggested to them on their website. But they will not mention you or
provide you with gratis examples for your trouble.
4.) You can't win. (Because manufactures will inevitably simplify their
processes.)
5.) You can't break even. Unless you value your own work.
6.) But, you can publish an article that will give you a chance to review
their kit and point out it flaws.
Next Pop quiz what is 'The Law of Finite Differences'?
Specifically the 'Law of Finite Differences' in modeling says that 'In most
people's minds, the line between being different and being weird is thin and
easily crossed. Also note that no one of your family or friends will ever take
you seriously until you make money at this. Then its no longer a hobby. Now
you have two jobs and no way to relieve the added stress. (The corollary is
‘don’t take yourself too seriously about your hobby. Enjoy it.)
Next Pop Quiz: What is ‘The Thick Thumb Theorem'
The 'Thick Thumb Theorem' states that 'the difficulty in reaching a seam
union, (so to sand smooth said seam) is directly proportionate to the mismatch
of the parts by both the manufacturer's desire for simplicity and the
resultant attempt of the modeler to do it right.' Hence the reason we all tend
to feel like a Rhino glueing petals on a rose at times.
Next Pop Quiz: What is the unofficial Rules for Parliamentary Procedures and
Monthly Club Meetings' for any Modeling Club?
1.) If it doesn't matter, it does not matter!!! (The Corollary: However it
will take up most of the meeting to discuss. This applies specifically to
grudges against other modelers, clubs or contest Committees
a.) All modeling clubs are part of the one community, if you want to bicker
with another club about something that happened five years ago, shouldn't you
be doing somewhere else?
b.) All modeling clubs are part of the wider community, take the hobby to the
community where you can and it will grow;
2.) All models are made equal. It’s the effort and the enjoyment that counts
not the detail;
3.) Whatever you want to say, its okay, we all want to hear it;
a.) The number of prizes you have collected does not make you an expert;
b.) Sharing is important; everyone wants to learn what everyone knows;
c.) Its okay to be wrong; mistakes help you learn;
d.) A smart-aleck criticism can be devastating; if you can't be constructive,
what are you doing here?)
e.)A model is a model is a model. It is not a replica aircraft.
f.) If I can't see your details, how can I admire them?
g.) Being the ‘Club President’ five years running does not make you a better
modeler. I just means that either the club respects you or they all have lives
other than modeling.
h.) Contrary to popular belief, beer does not make for better meetings, only
drunken ones;
i.) LISTEN YOU MAY HEAR SOMETHING!
j.) A motion to adjourn to the nearest coffee shop and or restaurant is always
in order. There, disagreement may be dealt with directly in the adjoining
parking lot. Quite possibly under the watchful eye of the local constabulary
Now for the Final Test of the Laws of Modeling 101. For those of you who
joined us late I suggest some cramming with flash cards. The answer must
include elements of the entire course. To be specific even elements of the
previous contributions from the class may be used in your answer. These will
be limited to one sentence only and must be complete thoughts. Here it is:
according to the material dealt with in this course. What makes a satisfying
scale model?
'What make a satisfying model is the attitude of the Modeler