Homebrew PCBs

PCB industry glues the SMT components to the board before reflow. It's a  
pain in the butt if the components have to be replaced, but this how the problem is overcome. Finding the right cement is the key.

David.



--- In Homebrew_PCBs@yahoogroups.com, "Jim Lewis" <jim.lewis@...> wrote:
>
> I have a problem with SMT chips jumping off the board during reflow. I preheat for 2.5 minutes 1/4" above the hot plate and then reflow 1.5 minutes directly on the hot plate at 375F with a cover. Paste is from Stencils Unlimited. Any solutions?
>