Hi Saul,
there is the ever-the-same-problem thing with those structures: the “G”-scales goes from 1:32 up to 1:19 what makes it difficult to build such structures for a broad mass of customers.
BUT a tunnel is easy.
especially one with 36".
But there are different ways to build it, so i will tell u a way just to make a light and easy “hole”:
u need 3 boards of wood and 2 tunnel-portals like u can buy it everywhere.
for more u need a styrene-plate with 1 or 1,5 mm thickness and 36" length.
U have to draw the form of the portals to the boards.
Normally the portals have a sort of “inner ring” that allows to fit it to a bent styrene-plate.
U must now draw a second line on the boards, so that the later outcut tunnel-form has a distance of 2mm to the form of the portal.
Now cut the wood. Use 2 of the wooden forms to hold the bent styrene-plate to the tunnel-portals and use one of this forms to give the styrene-plate stability in the middle (u can make one more for that…).
Everything has to be glued together and painted with grey: ready is the tunnel!!!
A second way ist to repalce the styrene with wooden strypes 10 x 3 mm and fit them in one by one. Thats MUCH more work, but its easier in the end. Bending the styrene-plate and fitting the tunnel-forms is something where u always have to less hands free.
Frank
