Subj : Hakko FR-301
To   : Dr. What
From : Moondog
Date : Mon May 11 2020 08:31 pm

  Re: Hakko FR-301
  By: Dr. What to All on Mon May 11 2020 09:52 am

 > So I was finally able to play with my Hakko FR-301 desoldering tool.
 > 
 > Overall, it was a breeze to use and I'll be using this for many future proje
 > (like the replacement of my Tandy 1400LT battery) soon.
 > 
 > The solder "tip" has a hole in it. You put the tip on the solder point so th
 > the leg is inside the hole.  You also want the tip slightly offset so that i
 > heating the leg - not the pad as much.
 > 
 > I usually move the tip to the side a bit to tell me if the solder has melted
 > then I press the vacuum button and I now have a clean solder point.
 > 
 > Of course, it's not magically perfect.
 > Sometimes you need to add some extra solder to get a good seal on the vacuum
 > And it doesn't suck the solder all the way to the other side of the board.  
 > the chips do need a bit of coaxing to get off because of the residual solder
 > the other side of the hole.
 > 
 > But I was able to desolder 3 chips (2 memory chips and a 80C85 CPU) in a ver
 > short time with no damage to the board or the chips.
 > 
 > 
 > ... Me, indecisive?  I don't think I am, do you?

Working with a bulb or a spring loaded sucker functions the same way, except
you need a free had to do it.  Having to touch up solder to make it flow is
common.  When I worked at ZDS I used to have a nice Weller station

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