As it usually goes in life, once you move into a new kitchen a need for a bar stool arises. So wife wanted to buy one but a cheapskate that I am, I told her that I'd build one that was cheaper and more sturdy. She agreed to go along but had a condition that if needed to be easy to dismantle and put away.

Step 1: Tools and Materials

One only needs some basic carpentry tools for this:

saw
hammer
screwdriver
wood chisel
sanding paper

As I was a bit lazy, I used a power drill to drill a hole in the top and for screwing in some screws.

Wooden parts used used:

40x30x2cm board
4x 70x5x5 for legs
3x 36x4.5x2
2x 26x4.5x2
2x 27x4.5x2
2x 16x4.5x2

Screws:

24 4.0x30 wood screws
4 5.0x50 wood screws

Step 2:

The board was 50x30 so I had to cut it to size. Next I made a hole in it so it would be easy to carry it around.

The hole you can chisel out. What I did is drilled about 50 small holes next to each other with the power drill and finished the cutting piece out with wood chisel. Sadly didn't snap a picture of the process. Also sanded out the hole.

Step 3:

Next I attached the 4 planks to the seat, leaving 2cm from the edge and enough room to fit the legs.

Step 4:

Put the legs together. Make sure that they're lined up properly else you will have one wiggly stool. The piece of wood closer to the middle is leg rest.

Step 5:

Then did 2 cm deep cuts on the sides of the legs and chiseled out excess material. Those are to make your stool extra sturdy when you fix in the horizontal supports.