FYI, the 3cm off is way to much to 'trim' so the suggestion to rebuild is the best option.
For now, I suggested the floor, as well, with some 2x4's to help simulate the walls of a table.
I am sure that this has to be disappointing after all the hard work that was put into building it.
K12 STEM Education Coordinator
SPARK, the Education Foundation for Prince William County Public Schools
Tell me, I’ll forget
Show me, I’ll remember
Involve me, I’ll understand
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