Martin, glad your daughter is enjoying the box. I don't know specifically why your box is proving difficult to open, but here are a few things I noticed using/building mine. 1) When opening, focus on spinning the box in place, don't let it move side to side. You may want to sand the bottom edges of your box so it doesn't catch when spinning (the screw is a great improvisation!).2) Applying a slight counter sink on the nail holes can help with alignment.3) Sanding/filing the nails and the holes will reduce friction and allow the box to open easier. 4) As seen in Step 11, drilling the nail holes before separating the locking mechanism helps ensure proper alignment.
Thanks for the vote! Let me know if you run into any problems or if the steps are confusing, I'm happy to help!
You know I honestly think it might be wall throwing proof. The knob might fall off, probably not much else.
With the nails in the "unlocked" position, the lid slides into the box, then you just tip it side to side to lock it.
Thanks for the kind words!
You are absolutely right, my approach was to over size the holes drilled through the metal frame. It might not be the best solution, but it should allow for some expansion.
Wooden Puzzle BoxView Instructable »
Thanks for the kind words @Boulderguy. I debated making wood inserts to cap the legs, but ultimately ordered some of the plastic plugs. I then proceed to completely forget about them when writing up the list of materials.
Thanks for the support @Renard_Blue! The video is mostly shot at a makerspace, not quite sure who's dolly that is!
Industrial Coffee Table fro...View Instructable »