11 Sep
2011
11 Sep
'11
1:02 p.m.
Then take a bit of high temp or tungsten drill rod in
a pin vice and
reheat the hole. Use the tungsten to push out the pin and leave in
place till it cools with slight motion. you can the work the drill rod
back out and leave a nice hold, and hopefully the thru hole plating.
Incidnntally, the pins in some old dot-matrix printheads seem to be a
tungsten alloy. They are quite brittle, and will not take solder.They are
also quite long.
If you have an old, dead, printhed, you might take it apart, extract the
pins, and use those as a hole-clearing tool.
-tony