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A different multi-extrusion approach - UM tool / printhead changer


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Posted · A different multi-extrusion approach - UM tool / printhead changer

Hey guys, is anyone here able to assemble me some custom firmware? I need firmware for dual extruder, heated bed (oem), ulticontroller, but with the max temperature raise to 350-400 degrees so that I can make use of the e3d's.

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Hey guys, is anyone here able to assemble me some custom firmware? I need firmware for dual extruder, heated bed (oem), ulticontroller, but with the max temperature raise to 350-400 degrees so that I can make use of the e3d's.

     

    Have you tried http://marlinbuilder.robotfuzz.com/?

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

     

    "And now for something completely different."

     

     

    What tip for the Merlin are you using there?

    Also, I have found that the Merlin tip is very sensitive to crossflow fan airflow during the first millimeter of the print. Have you noticed this and if so, what work around have you used.

     

    The tip is my own design. A workshop made me a batch with 0.2, 0.4, 0.6 and 0.8 mm (which can be drilled to 1.0 mm). If you like to try they are 4 € / piece.

    I didn't notice the sensitiveness so far. But it makes some sense as the heated mass of the nozzle is so low. However, I always tried to extend the heating block isolation thing some mm downwards to reduce the airflow hitting the nozzle.

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    I really like that tool too! Its what i normally use. However, it doesn't allow for changing the max extruder temp which is what I really need it for!

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Then... you only have 2 options.

    - Ask nicely to Amedee to see if he has time to put a slot for that on his builder.

    - Learn to build your own marlin firmwares (actually not hard at all).

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Haha, indeed, I have already pursued option 1, but as with a lot of the older members, i'm not sure is Amedee is still as active since the new forum came online. He is a level 1, so i'm guessing not.

    Option 2....I need to research, and time is limited at the moment. If i'm forced to do it I will.

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Actually, @Amedee is online in the new forum. Maybe he'll respond to the tag ;)

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    BUILDING MARLIN

    thermistor tables:

    https://github.com/ErikZalm/Marlin/blob/Marlin_v1/Marlin/thermistortables.h'>https://github.com/ErikZalm/Marlin/blob/Marlin_v1/Marlin/thermistortables.h'>https://github.com/ErikZalm/Marlin/blob/Marlin_v1/Marlin/thermistortables.h'>https://github.com/ErikZalm/Marlin/blob/Marlin_v1/Marlin/thermistortables.h

    tinkergnome (UM2 marlin):

    https://github.com/TinkerGnome/Ultimaker2Marlin/releases/tag/V15.03-RC1

    Ultimaker2 marlin source:

    https://github.com/Ultimaker/Ultimaker2Marlin

    First get the source code files here:

    https://github.com/ErikZalm/Marlin

    Then edit Configuration.h – this is by far the hardest step and it's not bad. I recommend you go here:

    http://marlinbuilder.robotfuzz.com/

    or

    https://bultimaker.bulles.eu/

    and use that website only to get the Configuration.h file. Then run winmerge or some other diff program to compare the latest ErikZalm version of Configuration.h to the one from robotfuzz which is usually a few months behind. Edit the ErikZalm version to match the robotfuzz generated version. Make any other edits as necessary. It sound complicated but it is extremely clear and well commented. Sometimes with paragraphs of explanation.

    configuration.h file detailed explanation:

    http://airtripper.com/1145/marlin-firmware-v1-basic-configuration-set-up-guide/

    Then you need to build Marlin. There are instructions that come with the erik zalm download in the "README.md" text file.

    Basically you download and install arduino ide:

    http://arduino.cc/en/main/software

    Then copy the sanguino software as explained in README file. Open Marlin.ino file in Arduino IDE by double clicking it (not pde file as stated in README - I think that's old). Select board as "Mega 2560" as explained in README file. Go to "file" "preferences" and select "verbose output" so you can find your hex file. Then build it by clicking the check box in the upper left corner. At the bottom you will see it compiling Marlin. At the end of this it says where the hex file is. If you are currently connected to your UM through USB you can just click "file" "upload" and you are done! But you should locate that hex file and save it somewhere along with the Configuration.h file used to create it so you can recreate the same version with maybe one change. Also you can upload the hex file using Cura in expert menu.

    Alternatively you can build Marlin with somewhat more detailed step by step instructions the command line way (which I don't prefer):

    http://www.extrudable.me/2013/05/03/building-marlin-from-scratch/

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Thanks for that post gr5, I'll mull it over when I get a minute.

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    Posted (edited) · A different multi-extrusion approach - UM tool / printhead changer

     

     

    "And now for something completely different."

     

     

    What tip for the Merlin are you using there?

    Also, I have found that the Merlin tip is very sensitive to crossflow fan airflow during the first millimeter of the print. Have you noticed this and if so, what work around have you used.

     

    The tip is my own design. A workshop made me a batch with 0.2, 0.4, 0.6 and 0.8 mm (which can be drilled to 1.0 mm). If you like to try they are 4 € / piece.

    I didn't notice the sensitiveness so far. But it makes some sense as the heated mass of the nozzle is so low. However, I always tried to extend the heating block isolation thing some mm downwards to reduce the airflow hitting the nozzle.

     

    I bet replacing the steel tip with copper or brass probably also helps. Otherwise been really enjoying this hot end. Bridging and overhang performance is downright fantastic.

    How much for a full set of tips shipped to California USA?

    Edited by Guest
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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    I bet replacing the steel tip with copper or brass probably also helps. Otherwise been really enjoying this hot end. Bridging and overhang performance is downright fantastic.

    How much for a full set of tips shipped to California USA?

     

    Well, 16 € + domestic shipping as I'll be in USA in two weeks ;-)

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

     

    I bet replacing the steel tip with copper or brass probably also helps. Otherwise been really enjoying this hot end. Bridging and overhang performance is downright fantastic.

    How much for a full set of tips shipped to California USA?

     

    Well, 16 € + domestic shipping as I'll be in USA in two weeks ;-)

     

    Great. Please PM me the payment details and shipping cost. PayPal is probably the easiest.

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Finally I found a shop that has the kind of spring I need. I been doing tests with springs like the one um2 uses, but in this case it needed be shorter. So my idea, as soon the new springs arrive next week, it's to use a dia 10mm (10.20mm) spring, with a metal washer for springs that it's 16día and 10mm inner dia. So it's all great (I hope).

    Also I changed a bit the design of the head transport so a m3 nut can be placed on the area that doesn't use a screw. This way a screw could be added from downside and a small spring could be added to make a propper stable grip on the ptfe isolator coupler.

    5a330fb0f397d_Capturadepantalla2015-07-24alas13_59_19.thumb.png.29dfebc8341c1e291b42062047e4bbac.png

    So far 4 weeks since the last time the ptfe moved and got a drip and after using 2 woods (the ones laser cutted) to keep all tight and seems to work very nicely (been printing 5-10h/day almost nonstop). The problem it's that the fan cap it's getting 'warp' more and more. So I have finish soldering the x4 30x30x10 24v fans from e3d and I'm printing an adapter to clip the stainless stell fan caps to the head. If all work out I won't need to reprint everything... Worse case scenario I will just print the new design.

    Also the main head started to be a bit loos (the grip it's perfect but it makes a little 'shake' shound on the y angle). After revising all the holes I found out that the LMU bearing holes where off by a 0.02mm. Not sure if that's the cause of it's just wear down after months of printing. Anyway I just redid the holes to print an extra block. I hope to upload the updates along August.

    5a330fb0f397d_Capturadepantalla2015-07-24alas13_59_19.thumb.png.29dfebc8341c1e291b42062047e4bbac.png

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Don't want to hijack this thread, so just as a progress report:

     

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Holy holy holy. Now that's sexy! Drollfaceicon.

    So no backlash?... Woa

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    Posted (edited) · A different multi-extrusion approach - UM tool / printhead changer

    Time will tell. There are still some minor issues, a loose washer and a kind of resonance with certain moves. This was just a stress test with crazy 1000 mm/s max speed and 9000 mm/s2 acceleration settings.

    Edited by Guest
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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    1000m/s ... And it didn't move the table? That alone it's impressive. Really promising.

     

    Don't want to hijack this thread, so just as a progress report:

     

     

    I keep watching it :D

    You guys are lightyears from what I would ever do. I'm struggling to make a fancap and you start building a printer...

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Don't want to hijack this thread, so just as a progress report:

     

    that's looking really cool!!

    Are you happy with the rails? Can you share the partnumbers you used?

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Don't want to hijack this thread, so just as a progress report:

     

    You started this thread! So I guess that means you can hijack it!

    What controller is that? TinyG? Beaglebone?

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    1000m/s ... And it didn't move the table? That alone it's impressive. Really promising.

    I keep watching it :D

    You guys are lightyears from what I would ever do. I'm struggling to make a fancap and you start building a printer...

     

    Come on, I couldn't do that any better:

     

    5a330f99df0bd_Capturadepantalla2015-07-19alas18_22_46.thumb.png.dfd30a9a900655240d36c7eac8d18427.png

     

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

     

    Don't want to hijack this thread, so just as a progress report:

     

    You started this thread!  So I guess that means you can hijack it!

    What controller is that?  TinyG?  Beaglebone?

     

    Smoothieware.org has everything you need to know about it.

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    Posted (edited) · A different multi-extrusion approach - UM tool / printhead changer

     

    Don't want to hijack this thread, so just as a progress report:

     

    that's looking really cool!!

    Are you happy with the rails? Can you share the partnumbers you used?

     

    It's too early to recommend or advise against the rails. So far I'm happy.

    Misumi has an extensive web shop  / order system. A starting point http://uk.misumi-ec.com/vona2/detail/110302586530/ for the rails. I chose the 12 mm width type.

    Edited by Guest
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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    I had a quick look at misumi already but found the options a bit overwelming :)

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