So I was finally able to play with my Hakko FR-301 desoldering tool.ããOverall, it was a breeze to use and I'll be using this for many future projectsã(like the replacement of my Tandy 1400LT battery) soon.ããThe solder "tip" has a hole in it. You put the tip on the solder point so thatãthe leg is inside the hole. You also want the tip slightly offset so that it'sãheating the leg - not the pad as much.ããI usually move the tip to the side a bit to tell me if the solder has melted,ãthen I press the vacuum button and I now have a clean solder point.ããOf course, it's not magically perfect.ãSometimes you need to add some extra solder to get a good seal on the vacuum.ãAnd it doesn't suck the solder all the way to the other side of the board. Soãthe chips do need a bit of coaxing to get off because of the residual solder onãthe other side of the hole.ããBut I was able to desolder 3 chips (2 memory chips and a 80C85 CPU) in a veryãshort time with no damage to the board or the chips.ã ãã... Me, indecisive? I don't think I am, do you?ã--- MultiMail/Linux v0.52ã þ Synchronet þ Two Dudes BBS - twodudesbbs.comã

Re: Hakko FR-301ã By: Dr. What to All on Mon May 11 2020 09:52 amãã > So I was finally able to play with my Hakko FR-301 desoldering tool.ã > ã > Overall, it was a breeze to use and I'll be using this for many future projeã > (like the replacement of my Tandy 1400LT battery) soon.ã > ã > The solder "tip" has a hole in it. You put the tip on the solder point so thã > the leg is inside the hole. You also want the tip slightly offset so that iã > heating the leg - not the pad as much.ã > ã > I usually move the tip to the side a bit to tell me if the solder has meltedã > then I press the vacuum button and I now have a clean solder point.ã > ã > Of course, it's not magically perfect.ã > Sometimes you need to add some extra solder to get a good seal on the vacuumã > And it doesn't suck the solder all the way to the other side of the board. ã > the chips do need a bit of coaxing to get off because of the residual solderã > the other side of the hole.ã > ã > But I was able to desolder 3 chips (2 memory chips and a 80C85 CPU) in a verã > short time with no damage to the board or the chips.ã > ã > ã > ... Me, indecisive? I don't think I am, do you?ããWorking with a bulb or a spring loaded sucker functions the same way, exceptãyou need a free had to do it. Having to touch up solder to make it flow isãcommon. When I worked at ZDS I used to have a nice Weller stationãã---ã þ Synchronet þ The Cave BBS - Since 1992 - cavebbs.homeip.netã

Re: Hakko FR-301ã By: Moondog to Dr. What on Mon May 11 2020 08:31 pmãã > Re: Hakko FR-301ã > By: Dr. What to All on Mon May 11 2020 09:52 amãã > > So I was finally able to play with my Hakko FR-301 desoldering tool.ãã > > Overall, it was a breeze to use and I'll be using this for many future prã > > (like the replacement of my Tandy 1400LT battery) soon.ãã > > The solder "tip" has a hole in it. You put the tip on the solder point soã > > the leg is inside the hole. You also want the tip slightly offset so thaã > > heating the leg - not the pad as much.ãã > > I usually move the tip to the side a bit to tell me if the solder has melã > > then I press the vacuum button and I now have a clean solder point.ãã > > Of course, it's not magically perfect.ã > > Sometimes you need to add some extra solder to get a good seal on the vacã > > And it doesn't suck the solder all the way to the other side of the boardã > > the chips do need a bit of coaxing to get off because of the residual solã > > the other side of the hole.ãã > > But I was able to desolder 3 chips (2 memory chips and a 80C85 CPU) in a ã > > short time with no damage to the board or the chips.ããããthose vaccum desoldering tools can be tricky. i prefer the manual tools overãthose things. you can rip pads off boards.ã---ã þ Synchronet þ ::: BBSES.info - free BBS services :::ã

MRO wrote to Moondog <=-ãã MR> those vaccum desoldering tools can be tricky. i prefer the manual toolsã MR> over those things. you can rip pads off boards.ããThey do clearly state in their manual that you should be heating the wire - notãthe pad - and that you need to be careful to not damage the pad.ããFor my testing, I used some old, certainly not working boards. I didn't haveãany trouble desoldering things while keeping the pads intact.ããI did have one mistake, but that wasn't in the desoldering process. It was inãthe removal process. The desoldering tool cannot remove ALL the solder, soãthere is a little left holding the component in. Care is needed to make sureãthat when you remove the component you don't pull the pad off because of theãresidual solder.ããLesson learned: I still need to have a soldering iron near by to heat up theãarea a bit to remove the component. But the desoldering tool make removingãthat component 100 times easier than with manual only tools.ããã... This building is so high, the elevator shows movies.ã--- MultiMail/Linux v0.52ã þ Synchronet þ Two Dudes BBS - twodudesbbs.comã

Re: Re: Hakko FR-301ã By: Dr. What to MRO on Tue May 19 2020 10:19 amããã > Lesson learned: I still need to have a soldering iron near by to heat up theã > area a bit to remove the component. But the desoldering tool make removingã > that component 100 times easier than with manual only tools.ãããi'm old school. i prefer manual. my coworkers are crying for a 'solder sucker'ãbut me and the boss are very against them. those pads are just on with a bit ofãglue. ããwhen you do the tool, you go over the lead and go down and do a littleãwiggle. then you go up and suck. atleast that's how i was shown. i only rippedãoff one pad and it was because of the issue you mentioned where i didnt get allãthe solder off and i ripped it off.ããi still like the old school desoldering methods. i feel like i have a lot moreãcontrol.ã---ã þ Synchronet þ ::: BBSES.info - free BBS services :::ã

05-20-20 20:40 MRO wrote to Dr. What about Re: Hakko FR-301ãHowdy! MRO and Dr. What,ãã MR> @VIA: VERT/BBSESINFã MR> @MSGID: <5EC5DBF6.823.dove-hob@bbses.info>ã MR> @REPLY: <5EC3F136.474.dove-hobby@twodudesbbs.com>ã MR> Re: Re: Hakko FR-301ã MR> By: Dr. What to MRO on Tue May 19 2020 10:19 amããã > Lesson learned: I still need to have a soldering iron near by to heat up theã > area a bit to remove the component. But the desoldering tool make removingã > that component 100 times easier than with manual only tools.ããã MR> i'm old school. i prefer manual. my coworkers are crying for a 'solderã MR> sucker' but me and the boss are very against them. those pads are justã MR> on with a bit of glue.ããIn the 1980's until 1996, I bought "Bishop Graphics" Pads, Straight Lineãand I.C. Connector parts made of Copper.ããThose parts have an adhesive layer on one side to hold them on the PC Board.ããI have also used Bishop Graphics parts to make new projects by sticking themãon a Perf Board, inserting the components through a Pad and soldering them.ããOne project I made didn't work, so I called a friend who was a Technician andãHe told me to use a VOM to see if I forgot to solder one of the Traces to aãPad.ããI found several places that I forgot to put a dab of solder on and solderedãthe connections and got my project to work.ããI haven't done much Soldering since the Mid-90's, but believe I still haveãsome Bishop Grapics stuff in the workshop, I don't know if places likeãDigi-Key still has them in stock, I bought mine at a local ElectronicsãWholesale Parts Store.ããIf I still have some of that stuff, I could mail some to You if You can'tãbuy it anywhere.ãã MR> when you do the tool, you go over the lead and go down and do a littleã MR> wiggle. then you go up and suck. atleast that's how i was shown. iã MR> only ripped off one pad and it was because of the issue you mentionedã MR> where i didnt get all the solder off and i ripped it off.ãã MR> i still like the old school desoldering methods. i feel like i have aã MR> lot more control.ããI had both a Large Solder Sucker and one that was very Small I used when Iãwanted to replace a part on a Circuit Board or Terminal Strip or Tube Socket.ããI thought they and Cordless Soldering Irons were the best thing sinceãScrambled Eggs.ãBut that's just what "I" think.ãã73 de Ed W9ODR . .ããã... Have you checked your smoke detector batteries & Fire Ext, LATELY?!ã--- MultiMail/MS-DOS v0.49ã * Synchronet * CAPCITY2 * capcity2.synchro.net * Telnet/SSH:2022/Rlogin/HTTPã