Author Topic: Solder paste/flux manual syringe applicator  (Read 94235 times)

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Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #200 on: November 09, 2015, 09:16:05 pm »
Well done Zapta,

I was not sleeping much - new V2 of my unit should be out soon, here the draft of improvements
- supporting structure / fixing of stepper motor will be added,
- increased stroke, 2 location fixing,.. (will be working 100 % in both directions),
- total length extended a bit
and some more exciting ideas that might get into this new version..

« Last Edit: December 21, 2015, 08:14:34 pm by mike_58 »
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #201 on: November 15, 2015, 08:46:03 pm »
Hello,
I just placed new version of dispenser on eBay Germany. Anyone interested - here is the link: http://www.ebay.de/itm/Solder-Paste-Liquid-applicator-Dispenser-5V-DC-USB-no-air-Lotpaste-Regler-/272045911507?hash=item3f57332dd3:g:TfAAAOSwQoFWOeZn
« Last Edit: November 15, 2015, 08:52:09 pm by mike_58 »
 

Offline mike_58

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« Last Edit: November 23, 2015, 01:19:02 pm by mike_58 »
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #203 on: November 23, 2015, 01:22:56 pm »
A bit updated photos for perusal and comments are welcome !
More here;
http://www.ebay.de/itm/SMT-Solder-Paste-Glue-Liquid-Dispenser-Syrage-DC5V-USB-no-air-Lotpaste-Regler-/272054355052?hash=item3f57b4046c:g:s0IAAOSwxN5WUwsk
Here is a procedure we worked-out with one of my German Client: 
I quote the email text: 
"I didn't pre-heat the solder paste, just took it out of the fridge and let it rest for some hours at room temperature. I built up pressure until some paste came out of the needle and then released the pressure. First I tried pressing and instantly releasing again, but it was quite hard to get the right amount of paste on the pads.... It was a success with pressing and not releasing after. While the paste was slowly flowing I just did pad after pad and always got the right amount. I tried different needles and it worked even with really narrow ones. Did some DFNs, TQFPs, SSOPs, and many 0603s. Worked really neat, just had to remind me to build new pressure once in a while :)
I like the dispenser and I'm happy to finally leave my toothpick method behind me :)  ""
Best regards,
xxxxxxxxx

So it is working well ...
« Last Edit: November 23, 2015, 01:27:41 pm by mike_58 »
 

Online dunkemhigh

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Re: Solder paste/flux manual syringe applicator
« Reply #204 on: November 23, 2015, 01:43:25 pm »
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While the paste was slowly flowing I just did pad after pad and

That description - from getting it out of the fridge to putting it away again - is exactly how I've been doing it by hand. My expectation is that a gizmo like yours would make the process better - quicker, or more accurate, or... well, something! Being able to pause between pads, for instance (which implies a button stab delivers a small and distinct amount, then nothing). Otherwise I am not sure why I would want to buy this and have a load more training hassles, plus ongoing maintenance, just to be able to do what I can do without it.
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #205 on: November 24, 2015, 02:31:43 pm »
All commands are in your hand, You can chose smaller drops - use appropriate needle, /  You can release pressure - and take a coffee brake and than continue and there is almost no maintenance needed... Surly it is mauch faster than pressing paste out of syringe with your hand finger. 
 
 

Online dunkemhigh

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Re: Solder paste/flux manual syringe applicator
« Reply #206 on: November 24, 2015, 02:45:08 pm »
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Surly it is mauch faster than pressing paste out of syringe with your hand finger

I would have thought so. No, 'hoped so'. But the post I references seems to suggest not, so I don't actually know, hence why I made the comment :)

 

Offline zapta

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Re: Solder paste/flux manual syringe applicator
« Reply #207 on: November 24, 2015, 02:55:26 pm »
That description - from getting it out of the fridge to putting it away again - is exactly how I've been doing it by hand. My expectation is that a gizmo like yours would make the process better - quicker, or more accurate, or... well, something!

I am using a similar motorized arrangement and I think it's more accurate and faster than pressing by hand.

The trick is to adjust the push speed such that it creates a very slow and consistent flow out of the needle (I am using #22), I didn't measure it but around 0.5mm/sec (I am guessing here). Then you go from pad to pad and tap them with the tip of the needle, tapping larger pads a few times as needed.
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Online dunkemhigh

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Re: Solder paste/flux manual syringe applicator
« Reply #208 on: November 24, 2015, 03:18:43 pm »
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The trick is to...

OK. I just envisioned it as placing discrete blobs per button press. I accept that might be wishful thinking, but that kind of thing is what drives someone to make stuff :)
 

Offline zapta

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Re: Solder paste/flux manual syringe applicator
« Reply #209 on: November 24, 2015, 03:35:28 pm »
Quote
The trick is to...

OK. I just envisioned it as placing discrete blobs per button press. I accept that might be wishful thinking, but that kind of thing is what drives someone to make stuff :)

The videos I saw of pneumatic dispenser show them placing beautiful individual drops of paste. The motorized one are much slower because of the gear ratio and the free play in the system so I don't think that individual drops are possible.

I am still holding my breath for Robenz's solution (hint) ;-)
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Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #210 on: November 24, 2015, 06:05:15 pm »
What Does Robenz Stand For ?? - Link please if possible ? 
https://www.eevblog.com/forum/reviews/solder-pasteflux-manual-syringe-applicator/60/   ??
Thanks,
Mike
« Last Edit: November 24, 2015, 06:09:52 pm by mike_58 »
 

Offline nanofrog

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Re: Solder paste/flux manual syringe applicator
« Reply #211 on: November 24, 2015, 06:29:32 pm »
What Does Robenz Stand For ?? - Link please if possible ?
robrenz is another member who's a top notch machinist.   :-+ He's come up with some amazing stuff; browse his posts and you'll see what we're on about.  ;)
 

Offline zapta

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Re: Solder paste/flux manual syringe applicator
« Reply #212 on: November 24, 2015, 06:30:54 pm »
What Does Robenz Stand For ?? - Link please if possible ? 
https://www.eevblog.com/forum/reviews/solder-pasteflux-manual-syringe-applicator/60/   ??
Thanks,
Mike

He is a member here with mechanical design experience,. He mentioned that he may look for a compact solution that doesn't require air pressure supply
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Offline KL27x

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Re: Solder paste/flux manual syringe applicator
« Reply #213 on: November 24, 2015, 09:24:27 pm »
Quote
Otherwise I am not sure why I would want to buy this
Accuracy. And don't tell me your thumb never gets tired. :

If I wanted to paste by hand, I would probably try one of these. But even watching the compressed air variety in action, I can't imagine getting much utility out of dotting every pad by hand.
« Last Edit: November 25, 2015, 01:37:26 am by KL27x »
 

Online dunkemhigh

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Re: Solder paste/flux manual syringe applicator
« Reply #214 on: November 25, 2015, 04:42:20 am »
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Accuracy. And don't tell me your thumb never gets tired.

I don't see there is a change in accuracy, but my thumb can get tired. On the other hand, I use raw paste and not the diluted stuff recommended for these, so perhaps if I used that then my thumb would be OK.

I think it would likely be a step forward, but not quite the quantum leap I dream of :)
 

Offline zapta

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Re: Solder paste/flux manual syringe applicator
« Reply #215 on: November 25, 2015, 04:47:34 am »
I think it would likely be a step forward, but not quite the quantum leap I dream of :)

Regardless, it's fun to build it :)
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Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #216 on: November 26, 2015, 08:24:35 pm »
I think it would likely be a step forward, but not quite the quantum leap I dream of :)
What more that this here :     
are you looking for ??
0.41 mm EU/ 27 gauge US size metal needle used  for solder paste application..
« Last Edit: November 26, 2015, 08:28:48 pm by mike_58 »
 

Offline KL27x

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Re: Solder paste/flux manual syringe applicator
« Reply #217 on: November 26, 2015, 09:00:31 pm »
Ahh, love at first paste. This is the most emotional soldering video I have seen in a long while. :)

Is this Sinatra "My Way?"* And why does Youtube not edit out your music? Do you pay royalties for bringing us this entertainment?

*Neermind. I thought something sounded familiar. Post #150
Quote
I do it my way:

« Last Edit: November 26, 2015, 09:08:03 pm by KL27x »
 

Offline FireFlower

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Re: Solder paste/flux manual syringe applicator
« Reply #218 on: November 26, 2015, 10:02:10 pm »
That USB syringe dispenser seems to  be interesting to hook up with CNC machine to paste boards cheap :D
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #219 on: November 26, 2015, 11:00:02 pm »
No output on that model ..
This one might be better for CNC but its still under development & testing ...
 

Offline zapta

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Re: Solder paste/flux manual syringe applicator
« Reply #220 on: November 26, 2015, 11:56:49 pm »
Ahh, love at first paste. This is the most emotional soldering video I have seen in a long while. :)

Is this Sinatra "My Way?"* And why does Youtube not edit out your music? Do you pay royalties for bringing us this entertainment?

Not to mention that Mike is playing it with one hand while applying paste with the other.  Awesome.
Drain the swamp.
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #221 on: December 01, 2015, 11:47:44 am »
I came across this web page - might be interesting to some of you guys: http://www.diyouware.com/node/174
and this Change unipolar 28BYJ-48 to bipolar stepper motor  http://www.jangeox.be/2013/10/change-unipolar-28byj-48-to-bipolar.html
might be useful to get more power/torque out unipolar stepper ....
« Last Edit: December 04, 2015, 05:44:00 pm by mike_58 »
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #222 on: December 11, 2015, 07:23:24 pm »
« Last Edit: December 13, 2015, 07:55:03 pm by mike_58 »
 

Offline peekay

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Re: Solder paste/flux manual syringe applicator
« Reply #223 on: December 14, 2015, 09:12:22 pm »
I purchased a USB Extruder Solder Paste Dispenser from the Mike Store on Tindie.com.

I received the dispenser after some delays in Canadian customs (the seller offered AMAZING support). The unit is solid and well built and fits well in the hand. I bought the dispenser for my first SMD project so I had high expectations and I was not disappointed. It took a few tries getting used to the operation of the buttons, getting the paste warm enough and choosing the correct dispensing needle. In 15 mins I was dispensing paste on 0402 and bigger pads without any problems (except for my eyesight!). This unit is now one of my go-to tools for building my small-run prototype SMD boards. I received the "older" version of the dispenser and the newest model looks to be even better. I highly recommend this unit.

 :)
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #224 on: December 15, 2015, 12:37:19 pm »
Thanks Peekay - Im glad my dispenser works great for you!!
 


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