<div dir="ltr">If there were a dedicated machine that didn't lose its ability to absolutely position, I think it would be much better. Ultimately though I think morgan has a point that fiddly tolerance will be more trouble than it is worth. <div><br></div><div>I have a 3D printer I could assign to the purpose if someone were interested in making a very rigid paste extruder for it.<br clear="all"><div><div dir="ltr" class="m_103753092142844680m_5798004025437402772gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div><br>- - - -</div><div>Weblog: <a href="http://adammunich.com" target="_blank">http://adammunich.com</a></div><div>With great power comes great responsibility. </div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Thu, Jan 3, 2019 at 10:59 AM <<a href="mailto:hol@gaskill.com" target="_blank">hol@gaskill.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-size:10pt;font-family:Verdana,Geneva,sans-serif">
interested in making some smd Sudouinos once it's up and running. zero bandwidth for software development rn on top of limited coding skills myself.<br>
<p>On 2018-12-19 2:07 pm, Morgan Allen wrote:</p>
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<div>I just kept it to myself, stencils are better.</div>
<div>Also, did you sacrifice the 3d printer to accomplish this?</div>
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<div dir="ltr">On Tue, Dec 18, 2018 at 6:47 PM Jake <<a href="mailto:jake@spaz.org" rel="noreferrer" target="_blank">jake@spaz.org</a>> wrote:</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">seriously no one had anything to say about any of this?<br><br> On Wed, 5 Dec 2018, Jake wrote:<br><br> > last night at sudoroom i did some things to get solder paste flowing from the<br> > TAZ 3 3d printer.<br> ><br> > i brought in a compact air compressor and adjusted its power switch to click<br> > off around 100 PSI (since it was failing to reach its design pressure in a<br> > reasonable amount of time and we only need like 40-50PSI for solder paste)<br> ><br> > i'm not sure if it's still working because it cut out apparently due to heat<br> > the last time i was running it, but possibly just because of duty cycle. It<br> > needs a fitting installed into the outlet to plumb it to the solenoid.<br> > Fittings are in the box behind the printer and there's teflon tape in the<br> > "tape" box on the shelves in sudoroom.<br> ><br> > i installed a three-port solenoid on the 3d printer which plugs in instead of<br> > the extruder resistor / temperature sensor. It contains a 47KΩ resistor to<br> > simulate a thermistor (to avoid a fault code) and it wires the nozzle heater<br> > wires to the three-port solenoid (which is rated at 24VDC matching the<br> > printer's power supply)<br> ><br> > I piped the 3-port solenoid to a syringe and mounted a syringe holder on the<br> > print head assembly in a reasonable place. A syringe of solder paste is in <br> > the<br> > sudoroom fridge and can be used. Needles of various sizes are in the <br> > cardboard<br> > box behind the 3d printer.<br> ><br> > the air compressor's outlet needs to be plumbed to the flexible black hose<br> > going to the 3-port solenoid. The solenoid needs to be mounted to the print<br> > head (a twist-tie should work).<br> ><br> > unfortunately the 3D printer's firmware seems to be cycling power to the <br> > nozzle<br> > resistor when a temperature is selected, probably because of PID parameters, <br> > so<br> > we will have to look for a set of commands (or modified firmware) to activate<br> > the solenoid properly during the dispensing process. This printer doesn't <br> > seem<br> > to have wires for a print head fan, which is how we connected the solenoid in<br> > past implementations of this setup. There will need to be a script or<br> > modification to rpt2pnp to issue the right commands for this setup.<br> ><br> > as a reminder the software for creating g-code to dispense solder paste from<br> > the .rpt file output of a KiCAD circuitboard project is here:<br> ><br> > <a href="https://github.com/hzeller/rpt2paste" rel="noreferrer" target="_blank">https://github.com/hzeller/rpt2paste</a><br> ><br> > note that it's superseded by<br> ><br> > <a href="https://github.com/hzeller/rpt2pnp" rel="noreferrer" target="_blank">https://github.com/hzeller/rpt2pnp</a><br> ><br> > which may be newer. the latter was confirmed to (apparently) correctly <br> > process<br> > the .rpt file from the project we'll likely dispense solder paste onto first:<br> ><br> > <a href="https://github.com/fitzdoingprojects/big_battery" rel="noreferrer" target="_blank">https://github.com/fitzdoingprojects/big_battery</a><br> ><br> > i'll be gone for two weeks but if anyone wants to make progress on this <br> > project<br> > please write back and i'll help as much as i can.<br> ><br> > -jake_______________________________________________<br> sudo-discuss mailing list<br><a href="mailto:sudo-discuss@lists.sudoroom.org" rel="noreferrer" target="_blank">sudo-discuss@lists.sudoroom.org</a><br><a href="https://sudoroom.org/lists/listinfo/sudo-discuss" rel="noreferrer" target="_blank">https://sudoroom.org/lists/listinfo/sudo-discuss</a></blockquote>
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