Start with the 4 pieces in the upper right corner of your drawing:
Insert two of the other pieces from the sides:
Insert two further pieces from above:
Repeat the last two steps on the upper half of the burr:
The pieces from 1 to 6 as shown in the question.
Put together the pieces P2 and P6
Add piece P5
Next is piece P4
Next is piece P3
Now you have to do some moves. At first the pieces P3 + P6
Now move piece P5
and piece P4
Now you can add the last piece P1
To move P1, P4, P5 and P6 gets you to the solution.
For puzzle and precision longevity, I would also suggest using harder woods. I have a few of these puzzles from olive wood and they're too soft (feel like lime/linden). If you're not careful while solving them, it's easy to damage the vertices. After several runs, the starting precision matters little.
If we call the common height of all these pieces one unit, then collectively they contain 24 cubic units' worth of stuff. So we might expect that they form a cuboidal block of size, let's say, 2x3x4 units. But I think this is impossible!
Let me introduce a bit of notation. Suppose the block we're trying to build is $l\times m\times n$ units in size. Call ...
Three pieces meet at one intersection in this puzzle, and on the opposite side there's another intersection which touches the other three pieces.
If you gently grasp the first three with three fingers from one hand, and the other three with three fingers from the other hand, you should find that the two halves, each composed of three pieces, slide apart. ...
I think I have found out what the two puzzle are to which these pieces belong.
The middle four pieces are part of a fairly standard burr puzzle, i.e. a puzzle which when solved has three pairs of parallel pieces intersecting each other to form a kind of three dimensional cross shape. Of the four pieces you have, the fourth is the unique key piece that is ...
For tips on super-precise wooden puzzlemaking, check out this tutorial from Lee Krasnow, one of the masters of puzzlecrafting:
I don't own the same puzzle as you, but I have a Burr puzzle set that is close. I am not completely sure if the solution I describe here will work on your puzzle.
I'll number the pieces #1 to #6 in the order you showed them in your question.
Combine pieces #4 and #6 to make rectangular ring. One end of the ring opening has a notch. Insert #5 into that ring ...
just analyzing the shape, you can form 4 'corners' comprised of 3 pieces each.
Your lower left piece(A) should be used twice in a corner. If you leave the first(A) as it is in the picture, you want the second one to be rotated 90' into a standing position so that the right edge of the piece is now the base. and then rotated it 180' on it's new base. Slide ...
This is a very sneaky burr puzzle, because it involves a bit of a trick:
Number the pieces in the photo from #1 at the top to #6 at the bottom.
In the finished puzzle shape, the pieces occur in pairs of parallel pieces. Those pairs are:
Here is a sequence of photos showing how to assemble it.
The first thing to notice that this isn’t going to be a “complete” burr, there is no final key piece that you could just slide in to lock the puzzle. This means that there will be empty spaces inside the solved burr, so it’s quite likely that some of the pieces can move a bit without the burr coming apart.
Therefore, not only will you have to figure out ...