Building a center-balcony carriage - part III

For the roof I first took a 2 mm balsa sheet as base. Grooves were scribed in to make the sheet bend easier and prevent the sheet to break while bending it in shape over the carriage top.
Because the sheet was only 10 cm wide I had to ad an extra strip of 1 cm to make the bend sheet cover the width of the roof of the carriage. This strip was connected to the sheet using tape at the under side of the sheet. This roof base was not glued to the carriage, only held in place by tape.

At this side you can notice the extra strip

When the base was in the right position and firmly held in place by the tape, a 5 cm wide strip of 1 mm thick balsa sheet was  glued over the base. Contact glue was applied on both the base sheet and the top sheet and than those two pieces were firmly pressed together.
Notice that the tape on the base sheet was left in place and the thinner balsa top sheet was glued over it. This way the base could stay in place. The tape between the sheets is not that thick and will not be noticeable later.

The same was done at the other side, leaving a 1 cm wide opening at the top of the roof, which was filled up with a balsa strip:

Another 1 mm sheet was glued on top of this.The only difference is that I did not left an open space on top of the roof but at one side. This is easier to fill up neatly and it will give more strength to the roof:

Finally it is left to dry for  24 hour.

Hopefully this glued sandwich of 3 balsa sheets (now 4 mm thick in total) will stay in form when the tape is removed. We will see...

UPDATE 16-10-2019:
Yes it worked! After the glue had dried completely I removed the tape and the roof stayed perfectly in shape. Next step will be placing some spacers / supports to keep the roof in the right place.  I draw some lines following the inside walls with a pen through the window openings...) as markers for these.

 

Back to part II

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