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<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"> <channel> <title>DIY printhead</title> <description>2 or 3 years ago I played around with making a peizo print head, whilst rummaging through some draws I came across a bag with the bits inside and thought it might be worth sharing, someone may be interested?.I searched for peizo materials and found them to be to expensive for diy, so looked for an alternative and found bimorphesat about 50p each, (buzzers), on a visit to my local poundland I purchased 3 bicycle buzzers to get the bimorphs as well as the drive electronics, the electronics are quit simple, a pulse generator feeding into a miniature step up transformer.Version one consisted of a 30mm dia ally disc with a pocket to receive the bimorph and fluid, a hole in the top and the smallest hole I could drill opposite, I then closed the small hole with a ball bearing and hammer, connected it up to the cycle buzzer, added water and, "nothing", after some head scratching I tried white spirit instead, (first thing that came to hand),"nothing", more head scratching, then added a reservoir in the form of a syringe without the plunger, success, I then tried vodka, again success but water would not go through.I decided to make a better housing with the bimorph in the horizontal plane and build a driver and not rely on the cycle buzzer,I used the insert from a spray can for the nozzle, a ne555 into a small transformer for the driver, I can vary the frequency and amplitude, the nozzle hole could do with being smaller but the results are very encouraging, its interesting to see the liquid spray out, as the frequency varies so does the spray pattern. The main reason for doing this was the desire to print fluids that a standard print head can not cope with, they tend to be very fussy about viscosity and give up the ghost at the slightest excuse, a single printhead will never be as fast but mounted on a plotter above a powder bed similar to reprap, and using skeinforge or similar ??????. If anyone is even slightly interested I will post some images, my ancient digital camera looses battery power within minutes.</description> <link>https://reprap.org/forum/read.php?153,52959,52959#msg-52959</link> <lastBuildDate>Sun, 12 May 2024 02:18:21 -0400</lastBuildDate> <generator>Phorum 5.2.23</generator> <item> <guid>https://reprap.org/forum/read.php?153,52959,894180#msg-894180</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,894180#msg-894180</link> <description><![CDATA[ ... check the date of the last post ... seems quite old, so maybe no reaction to await 8-)]]></description> <dc:creator>VDX</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Sun, 21 Jan 2024 11:03:22 -0500</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,894179#msg-894179</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,894179#msg-894179</link> <description><![CDATA[ Great job! Like Peter, I'm keen on more details you're willing to share. Your insights are valuable, and expanding on specific aspects, challenges, or key learnings could provide even more depth to the community<a href="https://topfollowapks.com/" target="_blank" rel="nofollow">.</a> Looking forward to any additional information you might share. Keep up the excellent work!]]></description> <dc:creator>Emma123</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Sun, 21 Jan 2024 09:10:43 -0500</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,682948#msg-682948</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,682948#msg-682948</link> <description><![CDATA[ Good thread and good things you do here! Just continue doing! We`re all waiting for the results!]]></description> <dc:creator>mnom</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 30 Jun 2016 09:53:44 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,644695#msg-644695</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,644695#msg-644695</link> <description><![CDATA[ Both of your projects are excellent JohnRPM.<br />Could you contact me at <a href="mailto:bbryanmd@aol.com">bbryanmd@aol.com</a>?<br />Thanks for this info!]]></description> <dc:creator>bbryanmd</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Sat, 26 Mar 2016 10:47:36 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,563456#msg-563456</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,563456#msg-563456</link> <description><![CDATA[ Hi all,<br /><br />I just wanted to post that I gave it another shot. Keep in mind, I did not read all the posts so if somebody already tried this, forgive me. :) One of the biggest annoyances for the the designs I saw on the wiki was the complexity/assembly. I have endlessly toyed with other complicated assemblies and designs... Maybe these can be designed to be much simpler. It took me 15 minutes or less to build a working device.<br /><br />Basically: A small piece of 1/4in acrylic. A few holes drilled to provide an inlet and an outlet flush with the surface of the acrylic. (I used small PCB drill bits to make small holes.) I used a small buzzer (1/2 inch-ish) acrylic and mounted it using 8mil x 1/2in double sided tape. I cut a small circle in the tape to leave the center of the buzzer unobstructed. I only used a dremmel and eyeballed the whole thing. I was a bit surprised when it worked.<br /><br />On its own, however, I haven't overcome any of the 100 other annoying problems with this kind of system.<br /><br />Video showing the device in action:<br />[<a href="https://www.youtube.com/watch?v=zRpeQTrlMTk" target="_blank" rel="nofollow">www.youtube.com</a>] (my first attempt at filming was quite disappointing... I didn't have time to make a better video.)<br />[<a href="https://www.youtube.com/watch?v=7tyZsPZ8i1s" target="_blank" rel="nofollow">www.youtube.com</a>] (this is an improved view)<br /><br />On a related note, this video shows the work I did with atomizer piezos (in this case it was running at 2.8MHz). It was... a bit too powerful. The plastic tip melted after a few seconds of operation.<br />[<a href="https://www.youtube.com/watch?v=u3NfMvnlvb8" target="_blank" rel="nofollow">www.youtube.com</a>]]]></description> <dc:creator>fosterb</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Sun, 27 Sep 2015 21:51:05 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,554108#msg-554108</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,554108#msg-554108</link> <description><![CDATA[ Yadavid,<br /><br />I looked in to this for some time now. In particular the ultrasonic vaporizer piezos. I kind of abandoned it because piezos are a pain in the... Particularly if you don't have a fancy machine shop to make the nozzel. :)<br /><br />The atomizers are interesting, and fun to play with but they are pretty different from the bimorphs. I started by building an atomizer with a simple (terrible) circuit. It worked. That much was fun. I could create gysers of water with them. With a little work, I was able to eject droplets from a nozzel. Then I hit a wall. It was too difficult to control, too slow, too unpredictable, too inefficient, ... I saw potential, but the physics is way over my head.<br /><br />BTW, I recommend a book "piezoelectric ceramics: principles and applications" by APC. It's a quick read, and gets to the point.<br /><br />I moved on to syringe pumps and had better luck. Better, of course, being a relative word. It still interests me, however.]]></description> <dc:creator>fosterb</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Fri, 04 Sep 2015 21:38:48 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,505592#msg-505592</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,505592#msg-505592</link> <description><![CDATA[ <blockquote class="bbcode"><div><small>Quote<br /></small><strong>don.key</strong><br />Hi,<br /><br />First of all, excellent thread! Thank you for all who have invested great deal of work into the research.<br /><br />I will need the ability to eject tiny amounts of liquid in my next project, in my case what would really count is how much liquid will be ejected within given time (Let's say a second). I need to be able to control this down to at least 1/100. The exact thickness and uniformity of spray does not matter much as long as it stays under 1mm.<br /><br />What really bothers me though is: I want to make a product / kit out of this (Open Sourced). But I suspect that this work would violate about gazzilion patents and I might end up sued all over.<br /><br />Any opinions on this?<br /><br />Cheers</div></blockquote><br />Inkjet technology has been around for quite many years. The early patents have been expired. If you build your ideas on these patents, it should be pretty safe. Also, most relative patents these days are about the high density multiple or even matrix of nozzles. What kind of company would still put serious money into a single nozzel print head? (just my thoughts, haven't done the patent search)<br /><br />This is a rather interesting and informative thread. I feel the piezo actuator is a weak part, which was initially designed for making noise. The energy it can generate appears limited although successful test has been done to show it's kind of working. I'm thinking to use the ultrasonic vaporizer piezo disc. It comes in 16mm and 20mm diameter, e.g. [<a href="http://item.taobao.com/item.htm?id=16526037588" target="_blank" rel="nofollow">item.taobao.com</a>]]]></description> <dc:creator>yadavid</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Tue, 05 May 2015 18:29:38 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,426485#msg-426485</guid> <title>Re: In need for a working piezo inkjet nozzle</title> <link>https://reprap.org/forum/read.php?153,52959,426485#msg-426485</link> <description><![CDATA[ look at this : [<a href="http://www.nanopaint-tech.com/" target="_blank" rel="nofollow">www.nanopaint-tech.com</a>] is possible to built actuators ?]]></description> <dc:creator>Elinye</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 30 Oct 2014 20:05:57 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,293501#msg-293501</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,293501#msg-293501</link> <description><![CDATA[ Hi,<br /><br />First of all, excellent thread! Thank you for all who have invested great deal of work into the research.<br /><br />I will need the ability to eject tiny amounts of liquid in my next project, in my case what would really count is how much liquid will be ejected within given time (Let's say a second). I need to be able to control this down to at least 1/100. The exact thickness and uniformity of spray does not matter much as long as it stays under 1mm.<br /><br />What really bothers me though is: I want to make a product / kit out of this (Open Sourced). But I suspect that this work would violate about gazzilion patents and I might end up sued all over.<br /><br />Any opinions on this?<br /><br />Cheers]]></description> <dc:creator>don.key</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Sun, 12 Jan 2014 09:21:42 -0500</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,271538#msg-271538</guid> <title>Re: In need for a working piezo inkjet nozzle</title> <link>https://reprap.org/forum/read.php?153,52959,271538#msg-271538</link> <description><![CDATA[ I'd appreciate if somebody can share a circuit to use a piezo with arduino with a BOM or a list of components.<br /><br />Thanks a lot!<br />Javier]]></description> <dc:creator>jameghino</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Sun, 24 Nov 2013 21:18:57 -0500</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,263476#msg-263476</guid> <title>Re: In need for a working piezo inkjet nozzle</title> <link>https://reprap.org/forum/read.php?153,52959,263476#msg-263476</link> <description><![CDATA[ I'm a bit late arriving, although I thought I would put forward a possible idea to make piezo inkjets a bit easier to make. I haven't got a clue if this would work or not. Let me know if you think it has potential. The following design shows how the print head is constructed:<br /><div id="div_c65859eb8c21fdc113d77dddda1a680e" class="mod_embed_images" > <div id="imagediv_c65859eb8c21fdc113d77dddda1a680e" class="mod_embed_images_image" > <noscript> <div> <a href="http://forums.reprap.org/file.php?177,file=20841,filename=inkjet.jpg"> <img src="https://reprap.org/forum/addon.php?153,module=embed_images,url=http%3A%2F%2Fforums.reprap.org%2Ffile.php%3F177%2Cfile%3D20841%2Cfilename%3Dinkjet.jpg" id="image_c65859eb8c21fdc113d77dddda1a680e" alt="" title=""/> </a> </div> </noscript> </div> <div class="mod_embed_images_info " id="info_c65859eb8c21fdc113d77dddda1a680e" > <a id="link_c65859eb8c21fdc113d77dddda1a680e" href="http://forums.reprap.org/file.php?177,file=20841,filename=inkjet.jpg"></a> </div> </div> <script type="text/javascript">mod_embed_images_loadimage('c65859eb8c21fdc113d77dddda1a680e', 'https://reprap.org/forum/addon.php?153,module=embed_images,url=http%3A%2F%2Fforums.reprap.org%2Ffile.php%3F177%2Cfile%3D20841%2Cfilename%3Dinkjet.jpg', 'http://forums.reprap.org/file.php?177,file=20841,filename=inkjet.jpg', 'https://reprap.org/forum/addon.php?153,module=embed_images,check_scaling=1,url=http%3A%2F%2Fforums.reprap.org%2Ffile.php%3F177%2Cfile%3D20841%2Cfilename%3Dinkjet.jpg', '', 263476, 800, 400, 'Loading image ...', false);</script><br />The basic idea is to make almost the entire thing 3D printable. After 3D printing you would give the plastic some sort of treatment to make it watertight and ink resistant. Varnish may work for this. Once you have the printed part you can then make the small nozzle by using the epoxy/hot glue and a needle method. The piezo then sits on an O-ring to create a cavity for the ink. Next to that cavity is a reservoir to hold the rest of the ink. The main reason for this is to remove the need for the tubing and other equipment. To prime the nozzle you would fill the cavity with ink up to the top of the O-ring. A 3D printed clamp could then be used to secure the piezo on top.<br/>]]></description> <dc:creator>samp20</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Tue, 05 Nov 2013 17:10:39 -0500</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,256390#msg-256390</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,256390#msg-256390</link> <description><![CDATA[ Yes 120v is dangerous, but you could use a stepup transformer to give the volts but not the amps. it should work at a lower voltage, but for wax<br />he may have needed the extra.<br />please keep us informed and add to the wiki page or start you own.]]></description> <dc:creator>johnrpm</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Fri, 18 Oct 2013 17:28:30 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,256172#msg-256172</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,256172#msg-256172</link> <description><![CDATA[ Thanks for the Heated Piezo link John! <br /><br />Hmm I'm getting the impression that even given the circuit diagram he shows there, I'm going to need help to build it without killing myself. I'm going to speak with a friend tonight who has a lot of expertise in electronics. At least if I'm working with him on this then I can learn plenty at the same time. In the meantime, I'll stick to what I know... <br /><br />I'm looking to orient my heads vertically, with the inlet at the top and the outlet at the bottom, despite this not being ideal in terms of purge air from the head. I'm still thinking about purging air from the head but I've got an idea on this which involves an additional output at the top of the head which could be used to prime the head. I've added a debubbler before the inlet which should help prevent any air in the feed getting inside. It won't stop dissolved gas, but it's something. After the debubbler, I've added a check valve on the inlet in the hope that this will remove the need for head pressure but I doubt it and think this will need work. The check valve I've integrated is a simple ball check valve but I think the actuation time and internal volume will be too great. I'm thinking that replacing this with a elastomer duckbill valve might resolve this issue though. Finally, I've already come up with a stackable design which will allow me to sandwich the heads together in a space and component efficient way in order to keep costs down. This will give me my eight different heads integrated into a single assembly (perhaps even a 4x2 arrangement to limit the offsets on the X-Y positioning system).<br /><br />Parts should arrive over the next week or two, so I'll keep you posted!]]></description> <dc:creator>MicroFab</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Fri, 18 Oct 2013 07:01:54 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,256022#msg-256022</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,256022#msg-256022</link> <description><![CDATA[ Don't know how I missed this, excellent stuff, he is printing hot wax. [<a href="http://reprap.org/wiki/Heated_Piezo_for_Jetting_Wax" target="_blank" rel="nofollow">reprap.org</a>]<br />his circuit looks good to me, but electronics experts would give a better opinion, no mames but the previous poster comes to mind.]]></description> <dc:creator>johnrpm</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 17 Oct 2013 16:51:12 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,256003#msg-256003</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,256003#msg-256003</link> <description><![CDATA[ Piezo sirens rely on resonance to make them so loud. A single impulse is never going to very loud.]]></description> <dc:creator>nophead</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 17 Oct 2013 15:58:15 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,255988#msg-255988</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,255988#msg-255988</link> <description><![CDATA[ Its been so long now that I have forgot most of the details, if you put a link to the circuit you are trying to build we may<br />be able to come up with something.]]></description> <dc:creator>johnrpm</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 17 Oct 2013 14:52:35 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,255969#msg-255969</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,255969#msg-255969</link> <description><![CDATA[ OK, so I got my parts ordered for the head but I cannot for the life of me figure out the electronics. I can work the Arduino part out and can alter the frequencies I send to the Piezo but I'm having trouble ramping up the voltage to get anything like loud out of it - it's certainly not the fire alarm it took it from which was driving me nuts in the middle of the night, that's for sure! The ones I ordered Maplin have also arrived but I've no more luck with them either really.<br /><br />Any help would be appreciated at this point.<br /><br />N]]></description> <dc:creator>MicroFab</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 17 Oct 2013 13:04:50 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,255625#msg-255625</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,255625#msg-255625</link> <description><![CDATA[ Wow! I've got to say I'm enormously impressed at what johnrpm and madscifi have already done. Some promising posts recently on this too, so it seems there are still things going on with this. I spent most of the afternoon reading this entire thread and it must have seemed like a dauntingly thankless task at times. So, way to go you guys! <br /><br />I've been looking for a method of cheaply dispensing relatively small volumes of aqueous liquids for a while. I wanted a method more reliable that peri pumps (without the routine calibration hassle these come with after wear and tear etc.) for a medical testing app. I was thinking of trying to 3D print small syringes but I have eight different liquids to dispense and the size of the steppers was going to be an issue! The volumes I'm looking to dispense are between 25 - 500 ul so they're pretty large compared to what you guys are aiming for, but I'm thinking I can save on valuable reagents if I can reduce this and maintain precision dispensing. <br /><br />For my part, I've made a few adjustments to Adrian's design to see if I can find a way of getting the thing to auto-prime and stay primed. I have a few years in the medical devices industry under my belt, so I've come across these issues before and have a couple of simple ideas which are worth a try. Since I don't own a printer I'm left to Shapeways parts but I've found their Fine Ultra Detail material (MJM process) to be pretty good for this type of fluid handling. I've got parts ordered in that and I'll report back with what I find.<br /><br />Nathan]]></description> <dc:creator>MicroFab</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Wed, 16 Oct 2013 15:40:03 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,255590#msg-255590</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,255590#msg-255590</link> <description><![CDATA[ Looks like a sensor, how would you use it ???, I am working on a deposition head that may deposit many materials, if I get it working I will publish the whole thing, but its not woking yet.]]></description> <dc:creator>johnrpm</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Wed, 16 Oct 2013 14:17:02 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,255383#msg-255383</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,255383#msg-255383</link> <description><![CDATA[ Hi im following this topic and im really interested in reproduce this attempt. recently i have found this sensor that would be implemented <br />[<a href="http://meas-spec.com/product/pressure/89BSD.aspx" target="_blank" rel="nofollow">meas-spec.com</a>] any suggestions?]]></description> <dc:creator>1125lbs</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Tue, 15 Oct 2013 21:08:08 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,213428#msg-213428</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,213428#msg-213428</link> <description><![CDATA[ something I intended doing but never had time, was have a peizo lighter unit or units, acting on a shim, similar to the origonal design on the wiki, but the lighter units could act on two faces or shims to get amplitude, and could go to a higher frequency, anyone up for it.]]></description> <dc:creator>johnrpm</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Wed, 29 May 2013 17:43:01 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,213375#msg-213375</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,213375#msg-213375</link> <description><![CDATA[ Now sold to industrial head (OnePiezoNozzle Drop-on-Demand)? <br />At the auction came to a head for 3D.<br />Other heads (>1nozzle: EPSON,XAAR etc...) difficult to control.]]></description> <dc:creator>piterburg</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Wed, 29 May 2013 15:14:57 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,207582#msg-207582</guid> <title>In need for a working piezo inkjet nozzle</title> <link>https://reprap.org/forum/read.php?153,52959,207582#msg-207582</link> <description><![CDATA[ I got a working 3D powder printer that is capable of holding a inkjet nozzle. More information about that can be found here: <a href="http://focussls.blogspot.nl/" target="_blank" rel="nofollow">http://focussls.blogspot.nl/</a>.<br /><br />All of my own attempts to this have failed. I will continue to work on it myself, but if there is anyone willing to help with this it would be greatly appreciated. <br /><br />you can reply, reply here: <a href="http://forums.reprap.org/read.php?153,207581" target="_blank" rel="nofollow">http://forums.reprap.org/read.php?153,207581</a>, or send me a mail to <a href="mailto:focuspowderprinter@gmail.com">focuspowderprinter@gmail.com</a>.<br /><br />Any help from the netherlands would be awesome, and I am specifically looking @ martino, who built one in a dutch fablab.<br /><br />Many thanks in advance]]></description> <dc:creator>dragonnator</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Sat, 11 May 2013 14:12:35 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,207424#msg-207424</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,207424#msg-207424</link> <description><![CDATA[ So I'm interested in this subject too. Mainly for depositing liquids far too thick for normal printhead in a controllable array of drops. A head like this might lead to a diy polyjet. Granted this would require a tremendous amount of work on miniaturization. Then there is the control for a multi nozzle dispenser, that's a lot of work.]]></description> <dc:creator>TheGremlin</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Fri, 10 May 2013 20:38:49 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,197385#msg-197385</guid> <title>DIY Printhead - Conclusion</title> <link>https://reprap.org/forum/read.php?153,52959,197385#msg-197385</link> <description><![CDATA[ Sorry to be joining this conversation about 2 years too late. I was wondering if anyone has completed their work here? <br /><br />Also, has anyone considered other applications for what a single nozzle piezo can do? We could use this as a way to label pin numbers for the PLA printed part. Or it can be used to put a simple greyscale image onto a part. <br /><br />I'm looking to use this as a "mask" for PC Board prototyping. <br /><br />Hope to hear back frmo some of you. What I've seen clearly works and needs to be packeaged a little more neatly into a single package with built in back pressure. <br /><br />Thanks and take care, <br /><br />Mikeal]]></description> <dc:creator>Mikeal</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 04 Apr 2013 13:47:42 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,197381#msg-197381</guid> <title>DIY printhead - Piezo Polarity</title> <link>https://reprap.org/forum/read.php?153,52959,197381#msg-197381</link> <description><![CDATA[ You make an important point about the red wire and the black wie but the missing piese is ........ which wire color goes to the center of the piezo and which wire goes to the base? <br /><br />Mikeal]]></description> <dc:creator>mikeal</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 04 Apr 2013 13:41:01 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,161404#msg-161404</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,161404#msg-161404</link> <description><![CDATA[ Took industrial head ink-jet (CIJ)]]></description> <dc:creator>piterburg</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Thu, 18 Oct 2012 02:52:21 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,160885#msg-160885</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,160885#msg-160885</link> <description><![CDATA[ Test. Water supply by the pressure of 2-3 atmospheres. Frustrated epoxy adhesive from the top(]]></description> <dc:creator>piterburg</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Mon, 15 Oct 2012 13:58:06 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,157358#msg-157358</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,157358#msg-157358</link> <description><![CDATA[ ... you have two cavities separated by a membrane - one (closed, laser-target) contains the 'power-generating' medium, that you can select freely so it will perfectly fit to your laser ... behind the separating membrane ist the cavity (with nozzle) holding your printing fluid, that can be complete different ...]]></description> <dc:creator>VDX</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Fri, 28 Sep 2012 05:39:50 -0400</pubDate> </item> <item> <guid>https://reprap.org/forum/read.php?153,52959,157345#msg-157345</guid> <title>Re: DIY printhead</title> <link>https://reprap.org/forum/read.php?153,52959,157345#msg-157345</link> <description><![CDATA[ Yes. But not all fluids are suitable for this.<br />Aqua - Yes<br />Ink - Yes<br />hemical - ?<br /><br />Sorry my english]]></description> <dc:creator>piterburg</dc:creator> <category>Powder Printing and Selective Laser Sintering</category> <pubDate>Fri, 28 Sep 2012 04:57:45 -0400</pubDate> </item> </channel></rss> If you would like to create a banner that links to this page (i.e. this validation result), do the following:
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