Homebrew PCBs

One thing you can do is drill holes and use small eyelets for via's. 
The only problem is the part will not sit flat on the board.

--- In Homebrew_PCBs@yahoogroups.com, "Dave Miller" <dmiller45@...> 
wrote:
>
> I have a question to the other members in the group. 
> 
> I use alot of SMD parts, many of which have heat slugs on the 
bottom of 
> the parts for thermal dissapation. At work, when I have a PCB made 
up 
> by a board house, we lay these out with a large solderable pad 
under 
> the part, then connect the top side of the PCB to the bottom side 
with 
> numerous feed thru holes. When the part is soldered to the board 
this 
> provides a themal path to the copper on the botom of the board. 
With my 
> home made TT, or photo boards I can not make plated thru holes to 
> provide this thermal path, but I still need to get the heat out 
some 
> how.
> 
> I have thought of drilling many feed thru's under the part and 
feeding 
> a thick copper wire from one side to the other, then on the 
compnent 
> side cut or grind the surface flat so the component can still be 
> soldered down.
> 
> Has any one else had to use similar parts? How have you managed to 
get 
> the heat out of these parts? Any other suggestions?
>