Electronics > Beginners
budget desoldering pump
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gedong:
$100 for 3 years and still working is a good investment.

well, i might go for proskit, also look nicer on the bench  :-+

will i need extra glass tube ? it seems they offer variety of parts ( tips, filter, tube, heating element)
nanofrog:

--- Quote from: gedong on August 31, 2018, 02:24:02 pm ---i never knew about silicone tip pump, i kinda have silicone tube for my fish tank ( used for peristaltic pump), i might try putting it to the sucker :-DD

--- End quote ---
Give it a shot, and see if it doesn't perform better than it has previously.  ;)
Microcheap:
I have a S-993A that I got very cheap from Aliexpress using some discount coupons and although I don't use it very often, it does the job well. I like it because it's compact and don't take to much space on my workbench and the metal stand is very sturdy too. I can't say much about its durability as mine is relatively new, but one problem I see with this model is the lack of replacement parts, there's only a few sellers offering it on ebay or aliexpress and they are kind of expensive comparing with the price of the whole unit.
But it's definitely an improvement from the use of a manual pump and I don't regret that I bought one. Here in Brazil is very common to use a peace of silicone tube attached to tip of the sucking pump, it helps improve the suction, (here we call it a "tip protector" or as it is popularly known "condom" and it is sold in electronics parts shops and costs just a few cents). You could try it and see if it solves your problem, but if you decide go for the S-993a I would recommend that you get the full kit with the spare tips and heating element.
KL27x:
^A potential problem with some of the cheap sheet metal solder suckers is there may be a threaded plastic bit screwed into really shallow threads at the top of the tube. This eventually disintegrates. You can pin it back in, but you have to be able to remove it for emptying the solder.

A company called Edsyn has been perfecting the solder sucker for many decades. The all plastic body has large locking lugs rather than threads. And the spring is a stretch spring installed in the back, separated from the solder bits and flux residue by the O-ring. This means you can open the thing up with a quarter twist, dump the bits, and be back to operational, all in a matter of seconds. Some occasional cleaning of the steel nozzle clearing pin is the only other bit to take care of. The frequency is dependent on how much flux residue you are sucking in. I try to avoid adding flux/solder to the joints to be desoldered, except as actually necessary. It's the flux that gums up a desoldering gun/sucker.

The Oki Industries DP-100 is a clone of one of the most popular Edsyn models that is out of patent. It was originally called the Soldapult, as made by Edsyn. But quality of these Oki clones can be sketchy. I have seen copies that are defective and don't seal, properly. If you want a really good solder sucker, I recommend Edsyn.   
 
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