Re: gEDA-user: Cheap 4 layer manufacturer?

[Charles Lepple <clepple@xxxxxxxxx>]

On 10/10/05, John Griessen <john_g@xxxxxxxxxx> wrote:
> What is it like hand assembling a BGA package?
> Seems like positioning would be hard to get right
> with no repeatable robot arm to move one thing away
> from the other and check alignment.

Ideally, the surface tension of the solder helps pull the part into
alignment with the pads, but the amount of misalignment that can be
tolerated is a function of a lot of different variables.

--
- Charles Lepple