We have an old bookshelf, but this havn't good condition.
I make a new one, this strong.
In this picture is the plan.
A make this from bramac wooden slats (50x30mm)
A cut this size:
300mm x 10
700mm x 10
1950mm x 4
I use just glue and dowels (8mm) with dowel marker.
This is my second procejt.
For the short woods I make groove for the plywood with table saw
Next day I use my Dremel MM40 for sanding. First I use 80 paper, than 120.
Next step is the plywood cutting and I make for this more
I'm going to paint these days the shelf.
The shelf is very strong, I try with my machines and its very good :)