In this post you have two videos. In the first one, I show the technique for making unions with dowels, described in this post, with the column drill. And in the second video, at the end of this post, we see a trial and error trial modifying the order in which I make the holes to make wood joints with wooden nuts.
If we are going to make joints with dowels, it is important to make the holes as vertical as possible so that the dowels enter without problems when joining the pieces of wood. And one of the best options for making vertical holes is usually to use a drill press. Yes, using a drill guide would also be fine, but it is not the subject of this post. In addition, of course, in order for the holes in the woods to be joined to be aligned, it is necessary to mark as precisely as possible where to drill the holes.
In hardware stores and DIY centers we can find centers of different sizes for each size of tubillon, but here we are going to see how to use nails as hubs of tubillions.
What I do is mark the area where I want to drill in the first of the pieces. And after cutting the head to some nails without a head (yes, but they usually have a small head that must be removed for this task), I have to nail them in the wood, right where the holes for the tubillions will go, with tip up. It is best to drive the nails in the normal way first, with the point toward the wood. Then I remove them and put them inside out, leaving the tip protruding one or two millimeters.
Now I just have to present that piece of wood in front of the other, in the position where I want to join them. And I press that wood against each other so that the tips of the nails leave the marks on the other wood.
So I have the marks left by the tips of the nails in one piece, and in the other piece I will have the holes in which I put the nails.
Now I only have to remove the nails that I put in the first piece and drill, just in the marks and in both pieces, the holes to make the joints with the nuts.
To drill the holes with the column drill, the most comfortable is to use either the column drill table or the vertical table for column drill that we saw how to do in this blog of carpentry and DIY. And if we don't have some stops for the bit, we can do a simple depth stop to drill with a piece of dowel.
Once the holes are made, we can insert the dowels and make the union of the wooden pieces. In the video you can see the whole process and the result. The technique itself is simple, but to achieve a perfect result we will need a little practice ... or a little work with the sandpaper to even out the surfaces.
Trial and error to make wooden joints drilling holes for dowels with the column drill: