This is a much better idea man. Sorry if this is a long post.
I guess I can start by sharing my experiences adapting from my normal soldering routine to working specifically on keyboards. When I built my first keyboard (A good 3-4 years at this point) it was with a wood burning tool that I had used for other projects, with an extremely blunt tip and horrendous heat dissipation, but hell it was all I had and I was going to make it work. When I finally decided it was time for an upgrade I purchased my Hakko 888. Let me tell you, it was a big difference. FOR THOSE GETTING INTO SOLDERING: Do not start out with s***y equipment, it wont make you any better (even if it is practice), in fact it may just re-enforce bad habits. To be clear I am not saying you should go crazy and purchase a $90 soldering station just to try it out, but you should invest in something solid. As for other equipment DO NOT just go out and buy generic solder, it will make everything more difficult. Buying a solid solder is critical to producing joints that you can be proud of
As to actually building keyboards I have learned a couple tips and tricks that I can share right away:
If you are having trouble de-soldering a LED, SIP Socket, bent pins on some mother boards, try the following (be prepared though because it might get a bit gritty ) ): - prop the board up on one side (I usually use a piece of foam)
- get something with a pointed, but blunt, tip like a hex screwdriver or something
- place pressure on the center nub of the switch housing on the back of the PCB
- with your iron in the other hand periodically switch your iron between the pins that are stuck
- with any luck it should begin to come out, be patient though and dont put a ton of pressure on it!
- If you damage the bottom of the housing with your poker simply replace it before re-soldering
If you have a component with a lot of tight space pins try a new way of de-soldering. This is something that I picked up when I built my first ergodox and accidentally soldered the IC backwards *facepalm*. Basicaly, instead of sucking the solder you blow. You can achieve this by taking a compressor with a simple spray nozzle on the other end and slinging the hose over your shoulder. This should only be done on PCBs with either plenty of empty space around the component you are de soldering or should be otherwise bare.
- Take your iron and heat up one joint
- while it is still melted take the compressor and spray some air onto the joint perpendicular to the arrangement of the pins ( don't spray the solder onto other pins)
- Once you have de-soldered all the pins remove the component
- The PCB may have splattered solder on it but thats no problem, simply take your iron and quickly glide it over the splattered surface to draw the solder onto your iron
If I pull a pad am I toast?Not necessarily, but be careful because you are now on thin ice. Dont do anything wreckless. Usually if I make a mistake I walk away from the project when I can think about it more clearly. Your first option is to rewire the switch to another spot on the PCB if it supports programming. If that's not an option you can try the following trick (again this is not an easy maneuver and is most definitely permanent) :
- Identify if your PCB has pads on the front and back, if yes you are in luck
- Aply a small amount of solder to the FRONT pads of the PCB facing the plate
- carefully position the switch so that the pins line up with the holes on the front
- flip the PCB around
- take your iron, with a small pointy tip, and heat the solder on the front of the PCB on the back
- carefully press the switch towards the holes while the solder is hot, if you have more than one pad on the same switch pulled you may need to alternate quickly in order to get it positioned properly
- press the switch all the way in!
If you are wondering,"Should I try and desolder this without a good pump or wick(for thinner pcbs)" The answer is always no. Dont risk it, you dont want to damage your board, you can get good pumps cheep on amazon and great pumps on edsy's website.
Does stickering suck to do? most definitely
What parts should I have on hand in case I mess up?Its great to have some spare parts in case you mess up, excess switch bottoms, tops, springs, sliders are always useful.
Should also say that I can fully recommend the Hakko 888 and Kester solder, just make sure it is thin because otherwise you will not be able to control the amount of solder for each joint!
final edit I promise
) these techniques are not designed as the "right way"to do things, but rather an alternative way to do things in especially tricky situation I know when I was starting out I was frightened by problems like this so use them at your digression. Most if not all of these strategies can be avoided by doing it right in the first place
Disclaimer: These are my opinions and experiences, results may vary