Dispensing Paste With My Pick and Place!

that dot matrix looks great just saying. i think it was just the almond butter.

Hello 600

Печалька. Учите Русский язык !

I think inkscape may work for creating the toolpaths

What comes through my mind:
1. You get after flow because of the air bubbles inside. You need an air free fill
2. You can buy air-free factory filled cartridge (expensive, little choice)
3. You could fill from 500g jar to a filling syringe, then to the production syringe, then de-air in a small vacuum chamber
4. Solder paste is way thicker
I prefer lead-free water soluble solder paste. You can clean your modules in a dishwasher (minus switches)

Stl files .. please

Might want a pelteir junction to temperature control the paste.

You might want to try dithering the drive. By constantly moving the moving forward and backwards slightly, it keeps the paste in a kinetic state. Your currently breaking from static to kenotic states.

Really good Job! Congrats

Oh, you could try to make your own cupcake sprinkles. :)

Time to make something like this for my old Delta 3D printer!

Why not post the files for people to use

u need a damn needle/taper tip bro

if you have 10 like buttons i press them all!

And two materials may have the same viscosity, but a different "cling factor" (made up term, to refer to the way some liquids or semi solids will stick together, even if they are a runny liquid. Like hot syrup.)

The viscosity of the medium shouldn't be super critical, as long as the two mediums are roughly similar, it will just be a rotation=volume calculation.

that pump mechanisim is super smart

Depending on what country you live in you can go to the hospital and ask for a party pack, they'll think your a massive drugo but free syringe and needles

You're all set for printing easter eggs! Use Nutella instead!

next up: automated peanut butter sandwich machine

no one:
me: reading video title as "Dispensing Paste With My d*ck and Place!,,

Hi, do you have cad files for the printed parts?

Stephen: "a motor to push goop out of this syringe"
Me: *looks at crotch*
Me: "oh thats how it works"

Fascinating, I built a pnp solder paste discpencer several years ago and the dispenser mechanism looks nearly the same XD Good Job!

I think I may have a way to generate the g-code for the solder paste easily. For my CNC machine I use a program called ESTLCAM. Simply import the DXF and generate the tool paths for the solder mask.

Whatever Stephen's on I'll have some :)

you found something on mcmaster carr that's under 1$???? WIZARDRY

The profesionals ones use neumatics for driving the paste tube

Solder paste, The forbidden peanut butter

If nothing else, you can decorate cakes, haha!

Use your pick and place to align your stencil/board for printing

using stencils is lot more cleaner and more efficient. why you are doing this bullshit.

are paglachoda

I'm enjoying your PNP build videos. I'm going through something similar myself at the moment. FYI, a less-complicated, and more precise way to dispense viscous fluids is by using air pressure on the back end of the syringe. Check out the Nordson Ultimus as a reference. All you need to make that at home is 2 solenoids (compressed air & blow-off or vacuum), a regulator (probably want about 10psi), a way to control the timing (ie, how many milliseconds to dispense), and a source of pressed air.
BTW, be sure to pay attention to the storage requirements (refrigeration), shelf life, and dispensing temp of your solder paste.

of course this should work. this similar design is OLDer already. nevertheless i subscribed. its fun to see an maker with passion.

You're going to have to run the PCB assembly line backwards: bread through the reflow oven to toast it, then to the P&P to put a perfect Nutella grid on it.

Depending on the solder paste you get, and the size of the nozzle you'll be using, you will be surprised as to what kind of force you need to apply to squeeze something out of the syringe. I don't think the 3d printed parts are going to hold up for that task. you might even need to get stronger syringes so they don't break...
I still prefer to do stencils, as it is super fast, clean and consistent and allows for extremely tiny pitch components (0.4mm pitch QFNs, 01005 passives, fine pitch BGAs, ...) to be soldered reliably. I have not seen an affordable paste dispenser that can reliably squeeze out such tiny amounts of paste...

I like your juvenile enthusiam, it remember me at your age... now i'm 64 and if I we'rent in such bad health as I'm now, I would continue to do project as you are doing... and if you we'rent 400 miles from me, I would give you a complete PNP machine with all feeders and vibrators and nozzles... actually I have no choice to scrap it as nobody want to buy a 1990 machine even if it's still working well.
I bought that one 15years ago and produced more than 3000 pcbs for different customers since then.
It's a V1.0 of Juki machine before they use that name, Amistar AR-5500. And the beauty if it, it work's on a single phase 220V, nice for a heated garage...
And as I was starting my first production, (and I have no garage at the time...), (and machine had a mayor bug- reason why I paid it only few thousand with oven,conveyors...), I practiced an opening directly in my rear house rooftop to be able to enter it in my basement...
I called a crane company and all the stuff entered from a flat truck bed over my house to my new fresh rear opening... I informed my curious neghbors I was entering a new kind of SPA in my house... It was and always still not permitted to do any commercial work in a house here...
After searches, I found the bug to be cables ripped off in the main x axis carrier. I replaced all them and I had a full operating machine!
12 years later, I had a collegue who wanted to be part of that but on his commercial site with more recent SMT machines... with vision...
Amistar had vision but only for feeder calibration and fiducial recognition before assembly time...
We bought two 2001 huuuuuuge Universal SMT's... 'huge' as they occupy tree times more space than mine... and almost 3500lbs each instead of my Amistar, around 1300lbs... And even if I had the strange idea to enter them in my basement... cutting roof hole that size was simply creazy and they operate on three phase 220V...
We've got fooled by vendor as both machines had numerous bugs and more than 50% tools required complete ovehaul...
Feeders on a Universal are built of crappy thin steel with (garantee to worn fast )aluminum slides compared to my good old feeders in solid stainless steel, practically undestructible... and so easy to adjust compared to that almost unadjustable crap...
So after a year of constant work, we were able to do what we were supposed to do... Production!
Sure, Universal is very fast compared to my old two spindle one but a setup before production is taking ten times too... and you need two machines instead of one as they are wasting so much space with feeders and vibrators that your 64 usable slots become full very rapidly...
And I'm not talking about stupid limitations... like the impossibility to calibrate slot 1-2 and 63-64 as calib-head camera can't go there! You should calibrate in slot 3 and hope that moving in slot 1-3 it still working!!! It's supposed to place 0201... forget that... 0603 is minimum practical size as with my old one... Oups, sorry, sooooorrrrry! I over "gossiped"...
Anyway, I would like to tell you that you have a bright future ahead of you! And compared to me, you have access to so many things that we could only dream about in my young 1970 years...
But, also great care if you are using leaded solder paste... it's very toxic and anything you do to avoid spilling, you will find some in your rice crispies, beleive me, I experienced that so many times and it cost me a kidney... until I weared full protection... a bit late...
Now we have access to test kits to verify lead contamination, discovered that I had spreaded lead on all rooms... with my shoes...
Take care, and have lots of fun!!!

Future reference: Order syringes from ebay or aliexpress. They or super cheap that way. Sure they take a while to get delivered (especially right now with this whole virs stuff) but they are usually worth the wait for the cost savings.
I bought like 1000 dropper pipettes from aliexpress and they will probably last me the rest of my life or until I inevitably burn my house down doing something stupid... again.

technically you did not pull the paste in by sucking on it, it was pushed in by the outside athmospheric pressure.

A 5s clip saying "these were FDM, and these were SLA printed” would be appreciated, when applicable.

so now put royal icing and make actual Sugar Dot paper!!

love it

I'm sorry but, do you have a servo horn necklace? Because, I think that is genius.