Lee - Good call on the guardrails. I actually had the Mustang almost go for a dive a few days ago, so I plugged the remaining gap that it tried to sneak through. My solution to scale cars leaving the scale road was.. well... scale jersey barriers:
Lee & kj356 - Interesting idea with the bullfrog snot... I will have to consider that as an option too, in case needed.
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Roadway Progress:
(1) I have the sidewalks/curbs mostly done on the "front" half of the town, as of the photo below. To this point, I had done the following since last update:
a) Painted on curbs (using undiluted Testors concrete acrylic paint)
b) Drawn on curb/sidewalk border (using a pencil; I've also done this with an extra fine marker. I like pencil better as it's less dark, and will blend a bit in later steps)
c) Painted a few random sidewalk blocks with either undiluted Testors concrete or aged concrete acrylic paint
d) Created a wash of Testors concrete acrylic paint and painted over the whole sidewalk pad surface (Note: the base color is a rustoleum aged gray, lightly sanded after application to ensure its nice and smooth)
(2) In this section, I have the lift out panel painted and installed over the lower half of the ramp. Still working out exactly how I want to detail this & whether I'll use the tunnel entrance cover:
(3) Here, completed sidewalk pads are in the foreground, while those towards the back center are in progress. There back ones show where I had pre-painted random squares (or squares along seams, or with "cracks" that look like they should be older) as noted above:
(4) Here are the rear pads after the wash was applied:
(5) Those black spots along the curb are where I drilled holes for curb gutters. I drilled holes with a tiny drill bit, gradually expanding each hole until it was about 3/8" wide. Afterward, I painted the inside of the hole black (plus some slop around the edges. Plan is to paint a curb-wrapping rectangle around each of these spots with a nice rust color to create the gutters. There are 15 of them... so it may get tedious.
(6) ...and finally, here is the family photo as of last night, once the last curb gutter was drilled out and pre-painted. All of the FX cars are well constructed, run well, and a hoot to play with on the layout.. but, for anyone considering jumping in, the Nomad model is the best runner I've tried yet.
...more to come as I finish the details on the sidewalk and roads.