We do not make 3.5 inch risers. To accomplish this, install our 2 ", 1 " and 1/2 " risers on top of one another to create that height. Each package contains 4 each and each piece is 2.5 " wide x 24 " long. The quantities to purchase will depend on the planned length of your track.
Any of our plaster-based products can be used on Shaper Sheet to create a hard shell, but deliver varying degrees of hardness. Reference the plaster chart on our website for details.Lightweight Hydrocal PlasterCarving PlasterSuper Strength PlasterMold-A-Scene Plaster
We recommend using Shaper Sheet Plaster (C1180) because it has an extended working time and the hardness factor. The extended time allows the modeler more time to apply plaster. Typical plaster products have about 5 minutes of working time, while Shaper Sheet Plaster has approximately 20 minutes.
Low Temp Foam Glue can be used, but it may pull away from the foil when forming it into terrain shapes. Another method is to form the sheets individually, aligning them side-by-side. Fold the connecting edges over approximately 1” so the fiber mesh edges face each other. Connect the sheets together with Shaper Sheet Plaster.