Translation of pages 34 – 35
Concrete slab plastic sheets from Preiser
The Preiser firm, which specializes in producing scale figu- res, also has some in- teresting accessories and details in its pro- gram. For our purpo- ses in this case they are the plastic sheets for the simulation of concrete slabs for runways.
by Daniel Wietlisbach
e will explain how to use that product to make won- derful scale displays to show off your heavy construction models and cranes. W
You have to search carefully through the Preiser catalogue to find the article 18325 in question. In the section: ‘accessories for the diorama construction in 1:87’ they can be found as an offering for concrete runway simulation sheets in 1:48, 1:72 and 1:87 scales.
In each set there are four plas- tic sheets, each measuring 216 x
132 mm. Each sheet has 3 concrete slabs and using a scale of 1:50, the slabs measure 6.60 meters by 3.60 meters, a perfect match for mode- ling purposes. For 1:87th scale, the prototype measurements are 11.5 meters by 6.30 meters.
New gluing surfaces
Because of the way they are pro- duced, the sheets have more or less of a vow. On the underside there are 1 mm high added strips but they do little to keep the sheets level. They do, however, prevent the modeller from fixing the sheets to a diorama surface via the simple method of using double sided carpet tape. To ensure the enjoyment of the planned surface of the diorama, we recom- mend filling the spaces between the 1mm strips with plain plastic sheet to create an even surface. Evergreen Styrene sheets are a recommended product for this step. Hobby knifes and files can be used to cut and sha- pe the sheets. To cut them to size, it is sufficient just to score the sheets and then they can be snapped apart. It is recommended to plane off the brows that are formed when scored and snapped with a sharp hobby knife. The sheets will not be level if this step is ignored and cannot be joined to make a smooth mounting surface. This is the most time con- suming step.
For the space depicted it was ne- cessary to cut 80 triangular and 40 rectangular pieces. Plastic hobby glue was used to secure the pieces with books used to weigh down the assembly until everything was dry.
The joining problem for these sheets has been solved perfectly by the “trapezoid noses” that mate with the neighbouring sheets. This prevents any gaps or cracks from showing when installed. To mount our concrete slabs on to the diora- ma board, we recommend using contact cement. (Use only in a well ventilated place, due to the solvent fumes, and follow all sa- fety instructions.) The best way to achieve good results is to coat both surfaces with a disposable brush and, depending on the brand used, let it dry for about 10 minu- tes. Then when placing the sheets in their final position the glue will set almost instantly. Of course, the sheets cannot be moved or adjus- ted. To achieve a clean and gap- less installation draw the outlines of the joints before positioning the plates.