: It is generally recommended to use "Fine" grade for most scales (even HO) to avoid an over-scale, "chunky" look.
: You can buy silica sand blasting grit or granite chick grit from agricultural supply stores for a fraction of the price of hobby-branded bags. 2. Heavy Equipment & Tractors (The "Safety" Buy) buy ballast
: Professional modelers often recommend Arizona Rock & Mineral because it is real, scale-accurate crushed stone. Cheaper options like Woodland Scenics often use crushed walnut shells, which some users find can float when applying liquid adhesive or crack over time. : It is generally recommended to use "Fine"
In the world of machinery, ballast is a safety requirement to prevent tipping during heavy lifting. buy ballast