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Clamping bottom panel: put something heavy (with one object towards the middle that does NOT move) to keep it more steady. Ensure M4 bolts are put through the holes of the enclosure frame and the panels to make sure everything lines up
Measure the distance and ensure the two side-pieces of the lid are at the appropriate length away from the edges
Measure the distance between the edges with calipers and ensure it is the same alongside the entire edge. Mark edge of fiberglass with a pen/marker
Use the middle panel to act as a validation check and ensure there is enough space for it to fit
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