To make the seat board for the stool I intended to buy a slatted board. But as I already mentioned, I ended up making a small board with some leftover boards I had in the workshop. The method you see in the video is not very fine there, and I had no idea how it would look, but the truth is that I am happy with the result, although if you look at the glue joint between the boards it is quite noticeable. I am also happy because I was able to put the wooden clamps to good use for the first time and the truth is that they do a great job (although with the help of the small metal clamps) and I am sure that I will give them a lot of use and maybe I will make some more.
To reinforce the joint of the planks that I used to make this board, I used 10-millimeter dowels, to make dowel joints, which I centered with the help of nails. Normally I would use centering pins (those little copper pieces you see in one of the pictures), but I only have centering pins and depth stops for 6 and 8 millimeter drills and sockets.

Another option would be to use a dowel guide, but I wanted to try this nail method and use the pulse drill. It is important to make sure that the holes we drill are at 90º to the edge of the board, because if the tubulars are inclined they will not fit well in the holes of the other board. I have a small pillar drill, but until I make a proper base for it I didn’t want to show it much.

Finally the ugly part of the video. I still don’t have a proper woodworking plane (and I don’t have enough skill to use it with confidence if I had one) and although I have an electric hand plane I have to say that I don’t like it (well, actually now I like it). If you are thinking about buying one forget about it. They do not do at all the job that the traditional carpenter’s hand plane does and they are also quite dangerous in my opinion, since the blade is out of sight and still accessible, it is very easy to put your hand under the plane and get a finger (I still keep them all, but on occasion I missed very little). Ideally, you should have a table planer and thicknesser, or at least a proper table saw. As my small table saw leaves much to be desired, I started with this idea of trying to adjust the edges of the boards with the help of a rasp. a bit sloppy yes, but an acceptable result at least for me. If I recognize that next time I will use the table saw.
That said, buying the electric hand planer for me was a bad idea (I no longer feel the same way since I made my own little home thicknesser, now I’m more than glad I bought the electric planer). There are other, more interesting woodworking and DIY tools to spend money on.
In this video (YouTube) you can watch how to use the table jointer. Yes, in English.

And just to comment on my internet video upload speed …. I’d better leave you a screenshot.