Two months ago the drawings issue 01 was posted. Making the microstill I found typos and errors that needed to be corrected. In issue 02 these are corrected.
Regarding the piping, the design was improved. Now it is possible to first solder the inner tubing of the cooler and then the outer tubing. The instructable step 2 is quite clear in describing the sequence.
Following the links to the drawings issue 02.
For those interested the issue 01.