Do not make the PCBs at home without industrial technology. You will have a high risk of failure due to short circuit, open circuit or component
misplacement in the manufacture process.
The PCB data for manufacturer are packed up in the file
twister2.zip. Twister PCB
is designated by a revision that is printed on the silkscreen and
on the solder side.
Send the data to the manufacturer together with the information that
they should read the README.txt (Czech manufacturers: READMEcz.txt) file.
If you are ordering multiple pieces, discuss with the manufacturer the
possibility of panelizing the PCB. Panelizing means the PCB is copied more
times on one board and cut apart after the manufacture. It makes the
PCB manufacture involves films. They are quite expensive because you
have to have 5 of them: 2 coppers, 2 masks and 1 silkscreen. It is economical
to use one set of films for manufacture of many pieces. If panelization
is involved, it requires larger (and therefore more expensive) films.
The PCB is double-sided with solder masks (a stuff that prevents soldering
on parts that should not be soldered on, they are very handy for
manual soldering) and service print aka silkscreen (white letters on the component side of the board, very handy for manual populating).
It's precision class IV. Together with aforementioned specifications it's
the most common form of printed circuit boards and is a default technology
at most manufacturers you get when you say "two-sided boards".
The output is in Gerber RS274-X format. Look for a manufacturer that takes
this format. This format has been chosen because it's a de-facto industry standard and has been developped specially for this purpose.
This is the most common format used in the world of PCB manufacture. Drill data
are in Excellon format. Both formats are ASCII-oriented (text files).
Beware, some manufacturers claim they support Gerber RS274-X format
but then it comes out that they are unable to load the Twister2 data. It ihas
occured during the development and the order had to be placed at another
manufacturer instead. The data (made by the PCB program) were correct in this case.
If something like that happens, argument with the RS274-X specification
made by Barco graphics company. The link to the specification is in the README.txt
Twister2 layout data: twister2.pcb
Component Side Silkscreen
Solder Side Silkscreen
Component side mask
Solder side mask