[sdiy] Need help with a SMD kit (OT?)

[sleepy_dog at gmx.de]

I don't know, probably not. So far I use them only for everything *but* 
ICs ;-) But since the number of all other components usually are far 
greater, it doesn't make that much of a difference if I get those out of 
their anti static bags before building.

Btw, for those saying SMD is too small for their eyes, and magnifying 
glass lamp is not enough:
If you can afford it, try a stereo microscope, like Leica or Nexius 
(seen things from 1000 bucks to some thousand... There are also brands 
which cost like 500,- but I have not heard of their reputation. Luckily, 
my workplace has an EE lab with one for my special cases :D )
Seeing things enlargened with both eyes makes everything so much more 
precise...

Steve


> has anyone found out if those little boxes are really esd safe, never
> got a good answer, they often advertise as for SMD, but that means
> nothing
>
> there is also these
> https://www.aliexpress.com/store/product/ESD-Safe-SMD-IC-Box-W-144-Bins-Anti-statics-SMD-SMT-Organizer-Transistor-Diode/425967_909915769.html
>
> On Wed, Jul 19, 2017 at 10:45 AM,  <sleepy_dog at gmx.de> wrote:
>> Ok, so you flip at least once per component height class of your boards ;)
>> And fiddle with wires / bend them etc to make them go in.
>> And then cut them after soldering.
>>
>>>> For SMD, one has to get the resistor off of a tape.  9 times out of 10, I
>>>> drop the resistor during this process <<
>> This, you needn't do.
>> Get some of those:
>> https://www.picclickimg.com/d/l400/pict/371330932745_/1x-100-Leer-Container-Box-blau-f%C3%BCr-SMD.jpg
>>
>> Call one pile of them e.g. "the 0805 resistor box", click the small things
>> together in an arrangement which makes sense for the kinds of values you
>> have.
>> Then buy 200 (or whatever you like) of each value and pour them in the
>> correct boxes.
>> Those "hatches" are available as self-closing by spring.
>>
>> Do the same for other components commonly used.
>>
>> Then you are set up for building:
>> With good (perhaps angled) pointy tweezers, you grab into the box that has
>> the label of the component to solder, and grab one of the parts, put it on
>> the PCB, there you go.
>>
>> Not anywhere near as fumbly as buying it on reel and then cutting them out
>> individually ;-)
>>
>> Steve
>>
>>
>> Am 19.07.2017 um 17:50 schrieb David G Dixon:
>>
>> What's all this "flipping the board over" and "parts falling out" business?
>> I stuff all resistors and diodes, hold a small piece of wood over them, flip
>> once and set down on the piece of wood, solder all joints, then snip clean.
>> Then I do all sockets, again, stuff, flip once, solder all joints.  Then I
>> finish with all the random parts that have random heights.  Soldering TH
>> joints takes about 2 seconds per joint once you get a rhythm going.  Plus, I
>> can stuff parts in front of the TV in my easy chair, then carry the stuffed
>> board out to the garage for soldering if I want to.  That's my usual plan
>> when it's too warm or cold in the garage.
>>
>> Parts do require some preparation, but I lay out all of my boards so that
>> the resistor leads are 0.4" apart, and for the standard 1/4W resistor, all
>> this requires is to bend the leads at a 90-degree angle to the resistor body
>> with my fingers.  Then I snip the leads to about 1 cm.  Sometimes I bend all
>> then snip all, and sometimes I bend and snip each one at a time.  This I
>> consider a part of the procedure of retrieving the resistors from their
>> respective packages.
>>
>> For SMD, one has to get the resistor off of a tape.  9 times out of 10, I
>> drop the resistor during this process.  With TH, I can prepare all of my
>> parts, lay them out on the bench if I want to and compare them with my BOM.
>> Then I can stuff them in a completely organized fashion.  I always find the
>> stuffing of my own boards to be a completely pleasurable process, very
>> relaxing.  I could literally do it all day (and I plan to after I retire
>> from my day job in 2020).
>>
>> ________________________________
>> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of mark
>> verbos
>> Sent: Wednesday, July 19, 2017 2:49 AM
>> To: synth-diy at synth-diy.org
>> Subject: Re: [sdiy] Need help with a SMD kit (OT?)
>>
>> I’m with Roman. Sure, I have hot tweezers, hot air, a pick and place
>> machine….
>>
>> But I switched entirely to SMD about 10 years ago. Initially used 1206
>> passives. I will NEVER go back. It takes way more time to assemble through
>> hole, with all the flipping the board over and parts falling out/sticking up
>> too high. The PCBs are way more cramped and annoying to layout in TH. I
>> build all of my prototypes with mostly 0603 passives by hand using nothing
>> more than a fine tipped iron. Also, I use lead free, organic water clean
>> flux. I wash the PCB with hot distilled water and the results look like a
>> professional machine built PCB. I don’t mess with breadboards, I just go
>> from a drawing to a PCB. When something needs to be reworked, I use
>> wire-wrap wire and hang parts off the board. Then make the changes to the
>> PCB file for the future.
>>
>> Do a few projects with it, and you’ll never go back. I promise.
>>
>>
>> Mark
>>
>>
>> On Jul 19, 2017, at 1:58 AM, David G Dixon <dixon at mail.ubc.ca> wrote:
>>
>>
>> SMD was developed for robots.  I don't feel a need to hone a skill to
>> compete with a robot, thanks.
>>
>>
>> On 18 Jul 2017, at 22:23, David G Dixon <dixon at mail.ubc.ca> wrote:
>>
>> This post sums up why I simply will not do SMD by hand.  Not... worth...
>> the... frustration.
>>
>>
>>
>>
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