It's time to put the canyon into the On18 Bandit Canyon Railway! This week, I sculpt a mountain of pink polystyrene foam insulation into a deep, serpentine Southwestern canyon. If you've been looking for a video on foam rock techniques, this is it! Sculpting with hotwire and wire brush, blending with Sculptamold and spackle, painting and finishing with acrylic paints, real rocks and dirt - it's all here. Thanks for watching, amigos! Dave
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Music courtesy YouTube Audio Library, attribution given where available. "Country Cue 1" courtesy of Audionautix, licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/... Artist: http://audionautix.com/ "Dude Where's My Horse?"- YouTube Audio Library
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howy folks Dave here at Thunder maesa
Studio coming to you with another
project for the 8 Bandit Canyon Railway
and this week we're going to be building
some more scenery in fact I want to
finish Bandit Canyon itself that's
everything in the middle of the layout
right here from where this bridge is
going to be located down to the top of
the benchwork I was just down at my
local Home Center where I picked up a
couple of 4x8 sheets of this pink
polystyrene insulation foam this is the
stuff I'm using for all of the scenery
here on the Bandit Canyon Railway I've
got one sheet that is 2 in thick and
another sheet that is one inch thick and
really that should be more than enough
to finish all the scenery on this layout
and have quite a bit left over for other
projects coming down the pipe before I
start cutting and fitting blocks of foam
for the scenery I actually need to cut a
piece of plywood to cover this area here
this is going to be the canyon floor the
lowest point on all the scenery and then
the canyon walls will be built up on top
of that so I've got some Thin plywood
back in my garage that I think will work
so I'm going to take some measurements
and we'll cut that to shape
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this polystyrene insulation foam is
scored I get the kind that has a score
in it they're 16 inch wide 8 in 8 Ines
and then 16 again there we
go then to cut these big chunks down to
the size you
need at least for straight cuts I use
the score and snap method I've got a
nice sharp blade in my utility knife use
a straight
edge just like that to start building
our Canyon
walls I've cut a couple of pieces of
foam just to sort of box this in using
some of this U
Loctite power grab
adhesive all right now I want to start
building up the back of the canyon
with some uh 2in foam there's not really
going to be a creek running through here
uh but there are going to be some water
pockets and just like the name implies a
water pocket is a place in the desert
and Sandstone country like this that
fills up with uh water when it rains now
we start in with the uh the hot wire
cutter to start uh making some of these
shapes and and this is where things
really start to get
messy go in here now with my wire brush
and start sculpting this foam a little
bit adding some strata at the same time
and yeah this gets
everywhere all part of the fun
folks now the heat
gun I'll just say that the heat gun is
the magic
ingredient that really makes this
technique work
you want to melt that texture back just
a little bit gets rid of all the
fuzz freezes it in place kind of making
this up as I go I have a a rough picture
in my
mind so I'm using a 45 de square and
going around and adding some angled
lines here to act as guides for when I
carve this so this 2in thick layer will
have more of a unique look look and not
just you know be this monolithic all all
the rock layers going uh in the same
direction and if you look close to
Canyon Country that's exactly what you
see it seems like they're all you know
because there's stacks of layers but
actually there's a lot of variation once
you start looking more closely I'll go
back
and carve some of these
out with my utility
knife then with the wire brush we just
follow that that same angle
as we continue up the canyon wall so
you've got a a piece like this which is
ready to install it's all carved and and
they're ready to glue in the easiest way
to transfer this shape to the next piece
is to cut a blank like this and then uh
turn it all upside
down like
so and then just trace it
these these por offs in these narrow
Canyons they'll have these what are
often called potholes or
tanks and they're just places where the
water has collected over and over again
over you know the centuries sometimes
and hollowed out and made these little
natural Wells and depressions in the
Rock and I think I've come up with a
fairly uh Nifty way to model those I'm
just going to use one of these uh aim
and Flame lighters that you use on your
barbecue and come down
here and melt
that until I get a nice
depression do it on each of the levels
here taking care not to light the layout
on
fire always be safe folks when uh using
fire like this for anything the nice
thing about this foam is that it'll just
melt like this it won't actually uh
catch on fire so you'll just get a nice
little melted in depression like that
now I want to concentrate just on this
right hand side of the canyon for a
little
while because I need to figure out a
this road there's actually a road that
comes from right here or Trail I should
say
and switches is going to switch back
around down to about here so we got a
section of my trail carved out from this
2-in piece of foam did all this with the
hot wire tool but for the rest of this
probably better to
use sh form
tool with this I can take a lot of
material off and really carve this down
in a
hurry okay that's not bad now I go ahead
and carve the rest of this in the usual
way
for this topmost part of the trail where
it meets the existing scenery up here I
had to use a short piece of cardboard
just to make this little s-curve
transition and now I'll fill in all
around this with the blocks of foam and
once everything's painted and detailed
should look pretty
good now check this out over on this
side of I've got this uneven profile of
rock and I want to match that with the
foam so I'm creating a a p pattern with
some cardboard that I've just got pinned
up here temporarily now I'll cut this
shape
out now I can transfer that
shape onto a 1 in thick piece of
foam and then cut it out with the hot
wire
tool now I should be able to just slide
this in here
get a pretty good
fit now I'm not going to glue this piece
in
yet but all of the subsequent layers
going up are going to be glued to this
piece so I'll be able to slide the whole
thing out as a single
unit finish this side finish this side
at the workbench slide it back in and
blend it all
together better make sure I didn't
accidentally glue that in
in that works pretty
well
okay I think that's about as high as I
can go on this side right now and still
be able to slide this in and out of here
for access this is actually a piece left
over from the Thunder Mesa lay out when
I was breaking down rainbow Ridge this
was an addit that was down below the
town of rainbow Ridge Edge and I was
able to save this whole thing and
thought I would uh plug it in there I
think it'll be pretty cool I'm going to
have a short piece of O8 track coming
out which may or may not have power to
it I haven't decided yet and you know
some flickering lanterns inside so
that'll be a cool little effect back
there in the
canyon but for
now I think the next thing is I need to
start blending all these layers together
with some sculpta mold and some some
spackle starting off with a kind of a
thick batch of sculp
mold use that to fill in some of the
bigger
gaps it's like that kind of ease that
transition my method is just to take a
little little pinch of it like that
pinch and just kind
of shove it into the crack and
then blend it with a wet finger
get this all along this Edge so you
won't be able to tell what's where the
cardboard and the foam come together now
I'm done with the sculp the
mold and I'm using some spackling
compound to fill in the rest of these
smaller uh gaps going back and just
hitting that with a weight wet
paintbrush adds a little texture to it
and works it back into the the crack a
little bit better
want to do all this want to get all this
done at once because um all of it's
going to need to dry
overnight this side of the canyon is a
little easier because I can work on it
off the
layout once again I just want to use
some sculpted
mold to fill in the bigger gaps the
bigger holes and blend this tunnel
portal
in this isn't a difficult technique at
all it's it's actually quite easy it's
just a little time
consuming mostly the time is waiting for
stuff to dry as usual right and then
just like the other
side I can do the rest of these
gaps with some uh spackling
compound it's about this point while I'm
waiting for the sculpt to mold and the
Spackle to dry
when this the scenery looks it's
absolute worst this is the worst it's
going to look in in this process and um
sometimes it's hard to Envision the
final outcome and that's when you have
to kind of just you know have a little
faith and trust the process fortunately
I've done this enough times before that
I know it's going to be okay but still I
look at go I don't know it's looking
looking kind of funky at this point but
once we get some pain on there
Everything Changes well most of this has
had a chance to dry
overnight so I'm going to go ahead and
get a coat of the scenic base color on
everything if you're looking for a color
that's similar to this that you can get
you know right off the shelf I would
recommend raw Sienna it's a good
starting point for this kind of uh
Southwestern scenery color red rock
country color and at this this point I'm
not trying to do anything fancy I'm just
getting a uh an even coat of paint on
all of the uh scenery that I just built
using a uh 1in filbert
brush longtime viewers of the channel
will know that this is my favorite
paintbrush for scenery it's kind of
become my lucky brush and uh you know I
start to worry now how much longer it's
going to
last because I've used it on an awful
lot of projects but you know it's like
the Energizer Bunny just keeps going and
going no reason to throw it away yet of
course I just realized
that the smart thing to do here would be
to start at the
bottom I work my way up that way I don't
end up you know reaching through wet
paint uh to get to these these areas
also start kind of back here in the back
of the canyon and work my way forward as
much as I can some of you might be
questioning the steepness of this
Trail as it comes down into the canyon
and
um I was actually thinking of a couple
of different Trails up at Grand Canyon
as I was modeling this sculpting this
out one is the H
Trail which goes down to H Rapids and
the other one is the the Tanner Trail
which is kind of out uh East End of the
canyon near Desert
View and they are both incredibly
Steep and the Tanner Trail in
particular was used at least
occasionally by horse
thieves escaping from Utah
so you know there's that uh Bandit
connection right there some of them
really are that crazy Steep and horses
can negotiate a trail that steep mules
do a little
better down here where I don't want to
get
paint on the uh on the layout
fascia this part down here that looks
like uh old
Barnwood using some painters
tape and some frog tape to mask that
frog tape is like painters tape but much
better gives you a nice clean edge
things like this I wouldn't go to this
trouble if I had a painted this part of
the faci it was going to be painted but
since it's going to be just kind of raw
stained
wood take a little extra
precaution now I just want to come in
from this side underneath the arch and
touch up here and there any spots I
might might have missed get a different
perspective on it again this right side
of the canyon quite a bit
easier since I can do the vast majority
of the painting here on the
table and you know that's kind of the
way I planned
it well there's really not much left
that I can do right now except to wait
for that first Scenic base coat to
dry the next step after that Scenic base
color has had a chance to drive let all
the dry for several hours is to go over
it with a dark wash dark but not black
and all this is is um some acrylic paint
and water and how I make it is I take
about oh five six seven drops of black
acrylic five six seven drops of dark
brown this is these are some Vallejo
colors in a container like this fill it
up with water Stir It Up and you know
check the transparency of it should be
transparent and runny you're not looking
for paint you're looking for a stain a
wash and the idea here is that this is
going to soak back into all of those
cracks and crevices and deepen the
Shadows now obviously since this is a
wash you really want to start at the top
and work your way down and just let that
color run down some people use a a a
spray bottle for this and you certainly
can
I uh for Close Quarters like this I just
prefer the control that I get with a big
soft brush also a good idea to have some
paper towels standing by and to mask off
things that you don't want to get paint
on obviously a lot of that's going to
pull up down at the bottom of the canyon
so I just take a dry paper
towel soak most of that up and this
piece over on our work table gets the
same
treatment and if you've already guessed
that the next step is to sit back and
wait for everything to
dry give yourself a
prize so here are the the colors that
I'm going to be using uh to finish off
the rock work uh these are some
inexpensive U craft store artist
acrylics got some raw
Sienna some burnt sienna uh some
unbleached titanium some yellow o ocher
uh burnt Umber and some black the black
is used very sparingly uh so is the uh
burnt sienna and the yellow ochre those
are just to punch things up a little bit
the main colors I use are these two
right here the raw Sienna and the
unbleached titanium those are the two
main scenery colors in fact the scenic
base color is really
just those two colors mixed together
before I get too far into the painting I
want to come around and look again again
at this side of the layout where I did
improbable Arch a few weeks ago because
I want to be able to match up these
layers of strata these layers of color
to start off with I've just mixed some
of the uh Scenic base color with a
little bit of that unbleached titanium
to lighten it up a little
bit just going over the tops of the
texture on the Rock work to um create a
little bit of
definition just gives me a good place to
start then I've got this thick middle
layer which is quite a bit lighter
trying to carry that color over it's got
a lot of that unbleached titanium in it
and a little bit of yellow ochre mixed
in just to make it a little bit punchier
and this layer it's got quite a bit more
of the
darker raw Sienna in
it makes a nice contrast I
think I'm also doing this side of the
canyon at the same time so while I have
this color mixed up I can get it on here
so everything will match nicely and then
this shelf down
here the trail comes out on this is
meant to be
Limestone so I want to use that lighter
tone
again and I'll probably lighten that up
a little bit more before before we're
done good idea to slide this back in
every so often and see how we're doing
matching up the layers and the
colors want the bottommost layers to be
the to be very dark and dramatic so mix
some uh burnt
sienna about
5050 with the raw
sien very powerful
color but when I go back over it with a
lighter shade for the highlights it'll
tone it down quite a bit now I want to
dry brush on some desert varnish here
and there and that's just just these
dark stains that run down the side of
sandstone Cliffs like this so I'm mixing
some some Ivory black with a little bit
of that burnt
Umber and I've got a semi-stiff
brush get most of the paint off
just come right down the sides like that
just kind of scrubbing it on
there now come back with the scenic base
color and just dry brush over the top of
that if ever anything gets a little bit
too too distinct or too I don't know
garish can
always tone it down by just kind of dry
brushing right over the top and this
will help to uh unify all the
colors bring everything together and you
know I love it when a plan comes
together I think I'm ready for some
Final highlights and again
I'm dry brushing these
on got some of that unbleached titanium
mixed in with my Scenic base color and
I'll just keep going over this until
everything looks like it belongs I I
don't know a better way to explain it
than
that I know it's a very artsy thing to
say but it's
true just keep going over it until it
looks
right I keep adding a little bit
more of the uh the unbleach titanium to
lighten it up a little bit more as I
go then for the final
pass some pure unbleached tight
titanium just using that on the
Limestone
layer to really make that pop that's the
only thing that would really have that
much wide in it well now I think I'm at
the
point where I can glue this side of the
canyon in don't have to worry about
access too much anymore I'm still going
to need to get to those pools but I
think I can manage and have this this in
place I want to glue this in now
because um now I I need to blend it in
with the rest of the scenery we're at
that point so I've made up one more
small batch of sculpt
mold which I'm going to use to fill in
this Gap right
there as you can probably see I came
back and finished off this side with a
little bit more carve foam a little bit
more sculpt to mold I've got the scenic
base color on there just finished
putting the dark wash on and now I just
need to come in with those final colors
and blend it all together make sure it
matches the rest of the rock work and
this part of the canyon will be done
[Music]
well that is it for the
painting so now I want to start adding
some
real dirt and small
rocks Red Dirt from Sedona
Arizona and then cover any of this
remaining plywood down here with a nice
layer of dirt to represent the the dry
bottom of the
wash and I've got my collection of
larger
rocks to sprinkle those right around the
edges as if they've fallen down from up
above now I'm painting some diluted
white
glue onto the
trail because I'm going to sprinkle on
some dirt there for the path I like to
use a lighter
shade which more closely matches this
rock
here now I want to wet everything down
everything I just put in here uh and
this is some wet water which is regular
water with just a couple of drops of
liquid detergent in it and that breaks
the surface tension the reason you do
this step is so that when you apply the
glue it doesn't
run it stays more or less where you put
it and now it's time for some diluted
white glue and this is uh just regular
Elmer's Glue diluted 3 to one with water
by the way if you can find the older
glue bottles that have this kind of cap
on them hang on to those because they
work a lot better for
this than the newer ones do so now I
just squirt the glue on and dribble it
on and you see how it pulls up like that
that's what you want that's how you know
you've got enough glue on there if you
see it white and pulled up that's still
nice and
wet and some more dirt up here on the on
the trail sure that's all nice and
saturated with glue now I can go ahead
and glue in this little
formation that I made over at the
workbench kind of a
pinnacle sticking up in the middle of
the
canyon and there's one last
thing I want to add
today and that's a
log that is helping to prop
up this rather
precarious overhang
of rock here above the
trail and now once again we're waiting
around for stuff to dry in fact I really
can't do anything else on this until
this last step dries until this glue
dries and there's a lot more that needs
to be done I've got this bridge up here
in the front to build I've got a mining
track to install coming out of this mine
add it I've got cacti and other plants
little touchups here and there retain
painting walls all of that stuff to
build in fact I've got enough stuff to
fill a whole another episode and that's
what it's going to have to wait for
because I'm out of time for this week
we're going to have to wrap this one up
I want to thank you all so much for
watching I hope you enjoyed this dive
into Bandit Canyon I had a lot of fun
hope you did too you can also follow us
over on Instagram at thunder. Mesa and
see what's happening on the Thunder Mesa
Studio website at Thunder mesa. Studio
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folks did and go over to patreon.com
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until next time when we'll be finishing
Bandit Canyon for reals keep moving
forward my friends adios for now
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