--- In
Homebrew_PCBs@yahoogroups.com, "Kjell M. Myksvoll" <kmyksvo@...> wrote:
>
> Hi,
>
> Probably a somewhat silly question, but...
>
> I need to attach a small populated circuit board on top of a
> (much) larger, also populated, circuit board. Next it should
> be easy to separate them, without destroying anything, later
> on if that should be needed. That is I want to achieve the
> same as one usually do with using spacers, but with using
> glue.
>
> Is there any type of glue that can be used this? Can one use
> "hot-gun" glue for this?
Hot-glue is pretty tough stuff to remove.
But I think a viable candidate is RTV rubber which comes in a tube
like toothpaste. You can squeeze a blob on the base board and settle
the smaller board on top of it. It will hold quite well, but you can
remove it if you need to, and scrape it all off with a razor blade.
We use it a lot for things like assembling speaker systems. You can
use a bead of RTV around the speaker flange to mount the speaker and
provide the seal at the same time. But it is "re-enterable" and you
can separate it with a sharp knife and just pull the speaker off.