Due to the breakdown the first time, I had to re-assemble the under frame. After scraping of the old glue and sanding it down to the wood, I re-assembled one wheel set. Since I do not have large enough clamps, I used a ‘jijnblok’ to press them together. (‘jijnblok’ is a Dutch word for a set of two blocks with three pully’s each with which one applies considerable force):
