Let's start the new year off right with a brand new project for the On30 Thunder Mesa Mining Company layout! "Baxter's Trading Post" is a new scene that will represent the oldest part of Thunder Mesa town. In this installment, I use the stacked foam technique to extend the mesa and provide a new canyon country home for some old favorite structures. Foam rock carving, finishing, and scenic painting are all covered in this video.
Thanks for watching, amigos! Dave
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Howdy folks. Welcome to Thunder Mesa
Trains. My name is Dave and this week I
want to start the new year off right
with a project for the O30 Thunder Mesa
Mining Company layout. I've been working
on this particular model railroad
project off and on for about the last 15
years now. And if you've been following
along for all that time, hey, thank you
very much and thank you for your
patience. I appreciate it. The layout at
this point has been completely
disassembled and moved twice. It's been
redesigned countless times, but now I
have a design that I really like and I'm
planning to stick with. So, what I want
to do today is work on some new scenery
for the layout. scenery that will help
me integrate some old structures that I
built many many years ago into the new
configuration of the layout and into the
new plan. And this is the area of the
layout I want to work on over here. This
back corner where the new Y is located.
There should be a cliff face right over
here according to the new plan. That's
actually the edge of Thunder Mesa
itself. And uh that's where this tunnel
portal leads into. It goes right through
the mesa there. And I've got a couple of
old structures here. This is the Big
Thunder Saloon, which I built gosh
nearly 15 years ago. It's one of the
original structures built for the
layouts based on the structure uh at
Disneyland. And then over here, I have
this old cabin. And the cabin used to be
part of Circle D Ranch on the old
configuration of the layout. And I've
been trying to figure out where to put
it. And I finally came up with an idea
that I really like. It's going to be
Baxter's trading post, one of the oldest
structures in Thunder Mesa. Now, all of
this is going to take a little bit of
time, so I think we better break this
project up into two episodes. In this
one, I'll show you how I build these
desert rock formations using the layered
foam technique. And next week, we'll
come back and finish and detail the
entire scene.
All of this older scenery here is made
from a polystyrene foam with a skin of
sculpt over the top. So, what I want to
do here is continue this on. So, the
board sidewalk coming from the rest of
town will meet up with the saloon right
about here and then eventually
terminate where the old cabin is right
about there. Now I need to cut a blank
that I can uh basically carve the rest
of that shape out of. And I need a piece
off of this which is 13 by 17 1/2 in.
I'm going to use the old score and snap
method.
Cut down about halfway through.
You can snap it just like that.
Now, I've laid this blank up on top of
the scene and, you know, made some marks
here for some crude cuts. That's a place
to start. And to cut it with, I've got a
coping saw and a and a short hacksaw
blade and a handle. Uh, I I prefer to
use hand tools like this rather than a
hot wire cutter because really don't
think breathing the fumes of this stuff
when it's melting is very good for you.
So, basically after each cut, I take it
back, measure again, try to align it uh
with the scene, and then come back and
trim off a little piece here and there
and keep doing that and till it's the
shape I want. Now, some of this is going
to be covered by retaining wall here in
the front. Some of it will be bare rock.
Uh, so I want to go back and finish this
edge a little bit just to make it look
more like Thunder Mesa Rock. For that,
I'm going to use mostly my stainless
steel wire brush
to add strata
and rocky texture. Trying to make this a
little bit more interesting over here.
And once I'm happy with the way that
edge is looking, I use my heat gun. This
just uh melts the foam back just a
little bit.
Gets rid of all the the dust and loose
pieces
and it freezes that texture that I just
put in into place. Now I can glue this
piece down with some of this Loctite
Power Grab allpurpose adhesive.
goes right here.
Make sure the tunnel portal still fits
right. And to pin this in place while
that glue dries, I've got some inch and
a quarter drywall screws.
And I'm going to go down right all the
way through the foam and into the
plywood.
Now I want to mark the future
positions of the cabin and the saloon.
Okay.
So now I'm working on this other side of
the tunnel that will be up against the
backdrop.
And I want the the interior to be, you
know, kind of detailed rock work, but
only I only need to do it on one side
because there's no place on the layout
where this side of the tunnel is
visible. So, if you look through the
tunnel portal, you'll just see this this
section of the tunnel wall right here.
Now, once I get a piece that's the right
size and shape, take it off here, take
it back over to the workbench, and then
I'll place the uh the top edge of that
piece onto the next foam blank
and trace it.
And that way, when I cut this next piece
out, it should uh match up with this one
really well.
Now I'll give that next piece the wire
brush treatment
and then trace that again
onto the next piece.
Now I can go ahead and glue this piece
into place. And I'm checking this the
whole time
uh to make sure that uh my tunnel portal
still fits
and that the trains and the cars will
clear everything here without hanging up
on any of the rock work. And that's as
tall as I need to go to clear all the
equipment
before I put a roof on here. And now I
can use pretty much exactly the same
techniques to finish up this section of
cliff wall that's going to go here
behind the structures. Really no reason
why I can't make this up out of multiple
smaller pieces of foam. And that way I
can use up a lot of the scraps that I
have laying around.
I always try to remember that I'm not
just modeling rocks, uh, modeling a
specific kind of geology that we find
here in the southwest, these sedimentary
layers of sandstone and limestone and
shale. So right here all around the
Thunder Mesa layout at this level
between uh about 16 and 20 ft above the
track. I've modeled in a layer of
limestone.
Um and this is actually based on a layer
that we see over in Sedona, which is
right across the valley from me. We call
it the Fort Apache limestone. Locals
call it the Sedona bathtub ring. Uh
because it's a little bit lighter in
color. starts off kind of white as as
opposed to the red rocks. So, I want to
continue this on uh through the new
section of scenery, and that's going to
require a slightly different rock
carving technique. As usual, I want to
start with a blank that's going to fit
that spot. And I've drawn in my cut line
here. But when I cut this out, I want to
go
a little bit outside of that line
because
a limestone layer like this
often it's more resistant to erosion
than the sandstone is. So, it's going to
stick out a little bit more and you're
going to get that realistic,
believable variation in the rocks. I'm
going take my utility knife and now
carve that back at an angle to the line.
Now, instead of going straight to the
wire brush this time, I'm going to use a
grinding bit in my Dremel tool to carve
the rocks away. The first thing I'm
going to do is add
couple of horizontal lines.
Remembering not to go back too far
there. Turn this up a little bit.
The trick when using the Dremel is to
keep it moving all the time. If you keep
it in any one spot, it's going to heat
up and then it's going to it's going to
sink melt right back into that foam and
possibly ruin your piece.
So, I've got a couple of horizontal
demarcations there. And now we'll put in
the verticals.
You want to keep this as random and
imperfect as you can. Uh the tendency is
to make it look a little too regular and
then it ends up looking like a man-made
brick wall instead of a natural rock
formation.
When this limestone erodess, it tends to
break off in big chunks. And that's
really what I'm trying to represent
here. Tends to, you know, break in at
right angles and then fall off.
That's probably good. Now I can take my
wire brush and just lightly
go over the surface. I'm not digging in
like I was before. I'm just lightly
adding some strata.
And just like before, hit that with a
heat gun.
Just don't burn your hand like I almost
did. Just that.
Now I can glue that on.
I've already carved the uh the rock work
here on the edge of the piece for the
tunnel roof.
And I've gone in and traced the path of
the tunnel on the bottom. I want to cut
this piece out right here because I
don't want this to completely cover that
section of the tunnel. It's going to
have a removable roof on it. So, I want
that open so I can get in there in case
there's a derailment or anything like
that. So, I'm going to cut out about
this much. And then I'm going to texture
this part of it to look like rock
because this part can possibly be
visible to, you know, very short people
if they're looking up at the layout. So,
I want to add a little bit of texture to
that.
for this. Carve it back with my knife a
little bit.
And then I'll carve this out the rest of
the way with a sure form tool. Kind of
vault that ceiling. And this part back
here, I want to sand smooth so it won't
drop foam boogers on the track when I
reach my hand down in there.
Sure my tunnel portal still fits.
Now, before I get too much further, I
want to put a hole down through both of
these layers of foam through the plywood
uh for the wiring on the cabin.
You can see here I already did a hole
for the saloon and made kind of a mess
out of it, but nobody will see that.
And now here's what everything looks
like with all of those sculpted foam
layers in place.
Now the next step is to blend them all
together so they look less like stacked
layers of styrofoam and more like real
rocks. So now I put all of the foam
cutting and carving tools away, swept up
all the foam dust, vacuumed everything
up because now I want to make a totally
different kind of mess. Now, my scenery
techniques have evolved quite a bit
since I built uh most of the rock work
on this part of the layout, but I want
the new scenery to match the old
scenery. So, I'm going to be using
sculpt mold here. Uh kind of trying to
mimic the original technique as much as
I can. Just going to use it where I need
it to fill gaps and blend things
together and uh let most of that
sculpted styrofoam show through. That's
about the texture I like right there.
It should plop when you drop it.
So, I've got my sculptor mold, got some
uh water, some paper towels, and my
favorite sculpting tools, which are
usually a butter knife, and this uh good
old Bob Ross pallet knife has served me
well with scenery over the years. Never
used it for painting, but works great
for scenery. Of course, my favorite
sculpting tool is usually my finger.
Oops, forgot to remove this. And jab
this back into these uh these seams in
between the layers of foam.
It's really great for filling in where a
couple of different pieces come
together. I forgot to mention one of my
favorite sculpting tools, which is a
stiff brush like this one. This is an
oil painting brush. It's great for
getting the sculpt mold back into those
cracks and crevices. And uh I should
probably warn you that when you first
start doing this, it's going to look
terrible. Kind of like this does now.
You know, it's not going to look great.
It's a process and you have to trust the
process. Um as the sculpted mold starts
to set up, it gets easier to work with.
Uh it's going to be easier to to get it
where you want it to go. When you first
start slopping it on there, it's going
to be you're going to be fighting with
it. But, uh, you know, give it a little
time and keep working it until you get
it to look the way you want it to. And
don't forget to, you know, get that
finger wet and smooth it out here and
there. The, uh, working time of sculpted
mold is going to vary quite a bit uh,
depending on the humidity, where you
live, and, you know, how wet you make
the the mixture to begin with. But if it
starts to dry out and set up on you
before you want it to, you can always
just mist it with a spray bottle. And
that uh gives you a little bit more
working time. But now when it starts to
set up, this is the time
you can really go back and smooth it
out.
You can also use a coarse brush like
this to add a little bit of texture to
the sculpted mold. Make it match the
carved in texture on the foam. Now I'll
just mix up another small batch of
sculpt the mold and go in from the
backside and finish the interior of that
tunnel.
Well, I think this is about all the
damage I can do for now. We'll let all
this dry overnight and we'll come back
tomorrow and get some paint on the sink.
Here we have a brand new onegon can of
Thunder Mesa's scenic base color. This
is the color I've been using on all of
the rock work since the very beginning.
And if you want to know what color this
is, if you want a name for it, it's
basically raw sienna. But how I attained
this color is when I was first building
the layout, I took a rock that I picked
up in Sedona, went down to my local home
center and said, "Can you match this
color?" And they matched it for me and
mixed me up a gallon of paint like this.
And that way I'm assured that all of the
real rock and real dirt that I use from
the local area matches the paint color
perfectly.
Yep, looks pretty good.
I have the brushes I'm going to be using
here. This is a soft filbert brush for
use with acrylic paint. And I've got a
couple of smaller ones to get into the
harder to reach areas. All right, that
should be enough to get us started.
This paint is a flat interior latex.
And my only goal right now is to get a
nice even coat on all of this pink foam
and all of this sculpt mold. That'll be
a good starting point. Now, I have
learned through experience that it's a
really good idea to keep a record and
some samples
of the paint colors you use. That way,
if anything's damaged or you want to
change things or add to things,
the colors are going to match. I try to
usually start from the top of the
scenery and work my way down, but you
know, sometimes I forget to do that and
I start in the middle.
Really good idea to
put some painters tape
on top of the track so don't drip paint
on it. There we go. Now I can slop paint
around a little bit more freely. And see
up here I'm blending it with the
existing scenery.
When this dries,
you won't even be able to tell um where
the new paint starts and the old paint
ends.
thing about painting
textured surfaces like this. You see all
these highlights here catching the
light.
To the naked eye, it's almost impossible
to tell
if those are highlights or if those are
spots that I missed with the paint. So
once it's dry, usually have to come back
and, you know, take a small brush like
this and hit a whole bunch of these
little little spots that I missed. All
part of the process.
Once again, it's going to be a little
easier to come around and do the
interior of the tunnel from this side.
Okay, while we wait for this to dry,
let's take a closer look at the
structures that are going to go in this
scene. So, this is the Big Thunder
saloon. And, you know, it's one of my
favorites. It's one of the first
structures I ever built for the layout.
In fact, I think it was number two. And
um in fact, I built it so long ago, it
was before I started doing regular
YouTube videos. So, there's no build
video on this structure. A lot of people
have asked, but I'm sorry, there is no
build video for the Big Thunder Saloon.
Um, I really packed in the details,
though. You can't see it, but there's a
fully detailed interior, which you can
see when the lights are on inside
through the through the front windows
and through the saloon door. And of
course, this structure is based on uh a
building at Disneyland, which is
actually a prop structure which stands
above the queue on the Big Thunder
Mountain Railroad. It's an old
structure. It's actually been around
since the old mine train through
Nature's Wonderland in the 1960s. So,
yeah, uh one of my favorites, one of the
things I love about it is that um and
what attracted me to it is that it's a
log structure. So, this was a challenge
figuring out how to build a log
structure like this at scale, how to do
the logs and all that. And even though I
didn't do a video for this one, I did do
a video for the log cabin, which uses
exactly the same technique. And I'll
talk about that a little bit more in a
minute. Now, I did do a full build video
on this tunnel portal, this peaked roof
tunnel portal, which is also based on a
structure at Disneyland on the Big
Thunder Mountain Railroad and originally
similar ones on the old mine train
through Nature's Wonderland. Disney
loves their peaked roof tunnel portals.
I guess technically this would be a snow
shed uh to keep snow drifts that are
falling off the off the mountain side,
off the cliff, off the tracks. So,
you've got a you've got a peaked roof
like this. The uh fire barrels up on top
are prototypical, but yeah, this is it's
fully framed in
because all of that is visible uh on the
layout. On the old Thunder Mesa layout,
this tunnel portal was over by um
Hanging Rock and Horse Thief Canyon,
which was fine, but I was kind of wasn't
really satisfied because it wasn't as
visible as I wanted it to be. I want
people to see the hard work that I put
into these models. So, this will be uh
much more visible in its new location.
And it, you know, it fits the the theme
of Thunder Mesa perfectly. And that
brings us to the log cabin. And this was
originally built for uh Circle D Ranch
on the old Thunder Mesa layout. And it
is based on a structure from Big Thunder
Ranch that used to be at Disneyland, but
now that whole area is part of Galaxy's
Edge, Star Wars Land. And this is where
I really uh went all out with the uh the
log construction. Uh the logs are uh
basically quarterinch dowels and then I
use um acrylic modeling paste to apply
bark texture to them, paint them, stain
them. They're notched just like real
real logs and and and then stacked one
on top of the other. There is an entire
build video on the cabin and I'll put a
link to that.
But now uh I want to talk a little bit
about the backstory of Thunder Mesa and
how this cabin will fit into it. As the
story goes, an old prospector named
Badwater Baxter, based on Tony Baxter,
the main imagineer behind the Big
Thunder Mountain Railroad, he discovered
gold, the headarters of Big Thunder
Creek, and that's what gave rise to the
town of Thunder Mesa. And that's why the
big but there is is called Baxter's but
um and I thought it would be fun to take
this old cabin with the the swayback
roof and uh turn this into Baxter's
trading post. We'll have a sign up here
and everything and there'll be you know
goods to trade and things up on the
front porch. um as if you know after he
uh gave up prospecting he uh he built
this cabin and uh discovered there was
actually more money in supplying all the
miners and all the the fortune seekers
that were flocking to the area as the
town began to boom. So that's the
backstory there. So you've got these
these two log structures, the cabin and
the the saloon right next to each other
as if this is the oldest part of town.
That's kind of the story I'm I'm trying
to tell here. This was the original
heart of town. Basically, a store and a
saloon. You know, that's the way most of
these old boom towns would start. So,
um, and for those of you asking where
the logs come from, uh, on a desert
layout, if you've been to Arizona,
you know, it's incredibly diverse, uh,
depending on what elevation you're at.
Totally different things grow from the
the the low Soran desert with the big
Sarro cacti to the high plateaus, which
are blanketed with pine forest. In fact,
it's the largest ponderosa pine forest
in the world. So that will be indicated
over on this new end of the layout where
where the trading post is going to be. I
think I'm going to model a couple of
ponderosa pines there. So it's like the
whole layout is sloping down in
elevation from that high side down to
the lower desert where McKennon Arch and
the Cactus Forest and things like that
are. So, that's uh that's the story
there on the cabin soon to be Baxter's
trading post. Now, let's head back and
finish up that scenic painting so we can
put all of these structures into place.
Now, I've let all of this paint dry to a
nice matte finish, which means we can
now proceed to the next step. And the
next step for me is always to apply a
dark wash. And this is a mixture of
black and dark brown paint
thin down with enough water until it's
transparent and runny. So, it's running
down the side of the cliffs like that.
And what the dark wash does is uh it
soaks back into all of that texture and
darkens the shadows.
And you know, then when we do the final
painting, those those dark shadows are
going to show show through. And it I
think it really adds a lot to the the
look and the the believability of the
rock work. You can see it goes on pretty
dark,
but that's going to lighten up as it
dries and drips down. And I'll use a
paper towel to soak up all that stuff
that pulls up at the bottom of the
cliffs. This also has the added benefit
of, you know, getting back into any of
the tiny little spots I might have
missed
with the uh initial base coat and
darkening those up. Want nice and dark
back here inside the towel.
And now we wait for all of this to dry.
Of course, if you're impatient like me,
you uh you can help things along with a
haird dryer.
And I'm impatient because I really want
to get to the next step because that's
when the magic happens. That's when all
of this starts to come together and look
like real desert scenery. And for that
next step, we're going to need a lighter
shade of paint. This is my light scenic
base color, which is just the same as
the dark scenic base, but it's been
lightened up a couple of shades by
adding white to it. As you can see, I
buy this stuff by the gallon as well,
but just going to put a little bit into
this red solo cup so we can get started
rendering the scenery. So now with that
black wash dry and using the same 1in
filbert brush as before, I just want to
go lightly over the surface of all of
these rocks.
Not trying to get back into the cracks
and crevices at all. just hitting the
tops of the texture.
And it's going to go on pretty stark and
bright like that. But it's going to
darken up a shade as it dries. I'm going
to do this with all of this scenery that
I just built
except for the interior of the tunnel. I
think I'm just going to leave that dark
like it is. Now, to finish up the scenic
painting on this, I have several tubes
of artist acrylics. This is some
unbleached titanium. Got some raw
sienna, which of course is very similar
to the scenic base color. Some Mars
black, some burnt umber, and some burnt
sienna. Now, most of the mostly I'll be
using these two colors. The rest of
these are only used very very sparingly.
Now, while this is still wet,
take a mixture of that burnt umber and
that Mars Black
and I'm going to add some streaks down
the sides of the cliffs. This is what's
known as desert varnish out here in
Canyon Country.
See it a lot anywhere there are big
sandstone cliffs like this. It's
basically just where water
runs down the sides.
Doing this while all this is still wet
so I can blend it in
with the color underneath using a
slightly smaller brush. So, I'll go down
and then I'll come back and kind of
feather it back. Just any place
logically that water would run down and
stain the sides of the cliffs. Now
looking at this existing scenery over
here, I've got a darker red band coming
through. So going to mix some um burnt
sienna with some of that raw sienna. Try
to match that and carry that line across
through the new scenery. And then I've
got another
slightly darker red band
down here. Also try to carry that all
the way through. blending as I go here.
All the paint is still wet. I'm doing
what's known as wet into wet.
So, I can blend it right on the surface
of the rocks. Up here above the uh the
tunnel portal, I want to put some black
soot stains on the rocks. And I can do
that, you know, wet into wet. Now, come
to that limestone layer I was talking
about earlier.
And for that,
I want to mix some of that light scenic
base
with that unbleached titanium.
Get a lighter
tan limestone color. And bring it all
the way around into the existing scenery
so everything blends together nicely.
Now, I think I'm ready to start on the
the final highlights. And for that, once
again, I'm going to be using a mixture
of the lighter scenic base color and a
little bit of unbleached titanium
and dry brushing it
on the tops here.
Just barely touching. Nice thing about
this painting technique is that it's
almost impossible to screw it up. uh
acrylic paints, latex paints mix well
together
and uh they're very forgiving
if you you know if it gets if it dries
and you don't like the way it looks,
it's really easy to go back and just
paint over it. Um, but notice I said
when it dries. You always got to wait
till the paint dries because that's the
one thing about acrylics and latex
paints is that um the uh
they shift as they dry. You're not going
to see what the true color looks like
until that paint is completely dry. So,
it's important to wait.
Now I want to do a final highlight pass
by mixing
a little bit more of that unbleached
titanium, that light scenic base,
just dry brushing it over the top just
where I think it needs be punched up a
little bit. Little highlights. I'll show
you a little trick. You want one of
these particular rock formations to
stand out,
just come and uh
hit the edges like that with that
highlight.
Brings it right out. Now, there's just
one more thing I want to do before I
call this rock work done. This is a
technique I first used over on the
Bandit Canyon Railway, and I really,
really like the way it looked. And
that's to use my pan pastels,
punch things up just just a little bit.
Mostly I use this very dark brown.
That's great for punching up the the
desert varnish streaks.
And then um use this very light
very light tan to punch up limestone.
Just a just a hair. We can punch up
those rusty reds too here and there.
There you go. I'm giving away all my
secrets today.
Now I'll hit this with a clear matte
finish.
You can start putting the structures
back into place.
Start with the tunnel portal.
Oh yeah, I like that. That's definitely
working for me. in the cabin.
Use the old bamboo skewer trick to run
the wires down through the foam.
In the good old Big Thunder Saloon,
HOME OF THE WILDEST RIDE in the
wilderness.
That's going to do it for part one of
the Baxter's Trading Post project here
on the Thunder Mesa layout. Hope to see
you back here next week for part two
when I'll continue to work those
structures into the scene with ground
cover, a whole mess of details, and
maybe a surprise or two. So, please be
subscribed with those notifications
turned on so you don't miss that. And in
the meantime, you can also follow
Thunder Mesa for free over on Patreon or
as a paid member. That's
patreon.com/thundermesa
or on Instagram at thunder.m mea. And I
hope you will check out the resources
that are available to you on the
ThunderMesa Studio website at
thunderma.studio.
As always, a great big heartfelt thank
you to our Patreon members who help to
make these projects and these videos
possible. Until next time, keep moving
forward everybody. Adios for now.