These rocks should work great for Z, N, or HO scale trains. I bought them for Z scale use but, there are a variety of sizes to choose from in one mold. Since getting this mold I have switched over to printing rocks with a 3D printer.

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Q: When I place it on a surface the mold does not lay flat due to the ridges on the back side being different heights. does that affect the castings?

Not sure I understand your questions, but I made a frame out of styrofoam and toothpicks to hold the mold level when I poured the plaster so it would dry level.

Q: What is the size difference of scale HO and N?

An N scale foot would be about 1/16 of an inch long, an HO scale foot would be about 1/8 of an inch long. Example: a "forty foot" long boxcar model would be about 5-1/2 inches long in HO scale and about 2 3/4" long in N scale.

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Description

🪨 Mold your masterpiece—rock your terrain game like a pro!

DURABLE FLEXIBLE - Made from high-quality polypropylene, this mold bends without breaking, ensuring countless creative uses.
COMPACT LIGHTWEIGHT - At just 5 x 7 inches and under 5 grams, it’s portable and easy to store for on-the-go inspiration.
EFFORTLESS CREATIVITY - Includes easy-to-follow illustrated instructions so you can start crafting immediately—no guesswork needed.
VERSATILE APPLICATION - Ideal for both indoor model setups and outdoor terrain projects, enhancing any environment.
PRECISION TERRAIN CRAFTING - Expertly designed mold captures realistic rock textures for stunning dioramas and landscapes.

The Woodland Scenics Rock Mold-Outcroppings is a 5x7 inch flexible, reusable polypropylene mold designed to create realistic rock formations for model terrains. Perfect for indoor and outdoor use, it features high-detail textures and comes with clear instructions, making it an essential tool for hobbyists aiming to elevate their diorama or landscape projects.

Specifications

Product Dimensions	10.16 x 10.16 x 2.54 cm; 4.54 g
Manufacturer recommended age	8 - 10 years
Item model number	SG_B0000WS7D0_VR3
Educational Objective(s)	Science
Language:	English
Number of Game Players	1
Number of Puzzle Pieces	1
Assembly Required	No
Batteries Required?	No
Batteries Included?	No
tech_spec_battery_description_toys	No batteries required
Material Type(s)	Polypropylene
Remote Control Included?	No
number_of_channels	7
Color	Black
Release date	20 January 2021
ASIN	B0000WS7D0

Have a Question? See What Others Asked

Is this N scale?

When I place it on a surface the mold does not lay flat due to the ridges on the back side being different heights. does that affect the castings?

What is the size difference of scale HO and N?

Can the molds be put in an electric oven to cure the plaster faster? I have it in a cardboard and styrofoam frame.

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