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Quotechristianmella
QuoteKDog
Well, figured it out if anyone is interested. I used the pins on MOT5. Specifically, the 5v and ground, and D23 for the control wire. cut the original connecter off the servo and added a two pin connecter to the 5v and ground leads and a single pin connecter to the sense wire. In the firmware you have to change the servo00 pins (in pins.h) to 23 and you are good t
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NewPerfection
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Reprappers
Looks like not enough plastic being extruded. Some possible causes:
Extruder stepper skipping or hobbed bolt/drive gear slipping, chewing filament. Possible reasons: Current to extruder motor set too low. Extruder acceleration and/or speed set too high. Hot end jamming or resistance to extrusion too high. Nozzle partially clogged. Temperature incorrect for type of plastic being used. Incorrec
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NewPerfection
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Printing
QuoteShawnT98027No printing of... toys, trinkets, low quality prints, or other useless printed objects.
What a shame. Useless trinkets are half the fun! Of course I do print useful stuff too, including dimensionally accurate prototypes
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NewPerfection
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Printing
QuotebreakzeitgeistI have a prusa I3 6 in. I have servo installed, Z switch on arm, I jumperd the vcc and 5v on ramps and using first set of pins in the servo section on board I feel I am making correct changes in firm ware. but nothing ever works. I think I am not uploading it correctly.....I got maker farm prusa i3 ramps download with preconfigured ramps. installed and when I download merlin an
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NewPerfection
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Reprappers
Quotebreakzeitgeist
I have a prusa I3 6 in. I have servo installed, Z switch on arm, I jumperd the vcc and 5v on ramps and using first set of pins in the servo section on board I feel I am making correct changes in firm ware. but nothing ever works. I think I am not uploading it correctly.....I got maker farm prusa i3 ramps download with preconfigured ramps. installed and when I download merlin a
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NewPerfection
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General Mendel Topics
QuoteSvdharmaI don't want to get too far off topic, but I have a decent mechanical design in mind that avoids some of the interference issues.
Maybe start a new topic? It's always interesting to see different design ideas and solutions.
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NewPerfection
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Developers
QuoteEnlightxi use one printed in PLA never have any issues. remeber the e3d has a fan cooling the hotend so heat will not rise enough to get to the mount anyway.
Yep, PLA works just fine with an actively-cooled hot end. I wouldn't recommend using a PLA mount for a J Head for example, because if you run it without a fan (e.g. for printing ABS), the PLA mount will deform from the heat migrating u
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NewPerfection
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General
Quotetronmy current one has a J-Head but I want to try something different.
Why? Is your current one not working well? Do you want to try new materials that your current one cannot extrude? What size filament are you using or do you want to use? We need to know the answers to these questions to give you a proper answer.
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NewPerfection
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General
QuoteAngelOfGrief1. Gen 7 electronics found on reprap.org website is a board with an Atmega 1284P MCU which relies on 4 Pololu drivers to drive the steppers. Pololu's are plugged into it. So, it's basically an all-in-one-board 3D printer controller.
Yep, but you can only buy it from one source - Traumflug himself. Otherwise you have to create the PCB and source components yourself.
QuoteAngelOf
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NewPerfection
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General
QuoteSvdharmaSuppose you had multiples extruders with independant x and y axis movement, how hard do you think it would be to write algorythms to optimise the toolpaths of two extruder heads without interference between them? You could potentially double your print speed if you could pull that off.
This gets really complex if you want all extruders to have axis to the full build platform. The pr
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NewPerfection
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Developers
QuoteRalfSensing the diameter would be the biggest challenge, the rest is just software..
Yep. If you have a known distance between the measuring device and the melt-zone of the hot end, real-time adjusting of extruder feed rate based on the detected diameter and known distance (adding a delay to the adjustment) should be fairly trivial.
QuoteRalfThe capacitive approch seems to be the way to g
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NewPerfection
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Developers
Note: this is all assuming you want fully independent Z axes for each extruder. If you just want each extruder to be automatically adjusted over a short Z distance, with all of them tied to a single overall Z axis, then the problem is a bit simpler. Even a servo could be used to adjust each extruder's height, assuming the servo has a high repeatability and holding ability. The probe on each ex
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NewPerfection
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Developers
Quotecfy7I read somewhere that the inventor of the j head thinks his should be run with a fan.
Yes, for printing with PLA. Not necessary for ABS. This is just to keep the thermal break (PEEK) cool enough so that the PLA doesn't become rubbery too far up and cause too much friction to be pushed through.
Quotecfy7I used standard bits to clean up my parts. I don't have any metric as well.
I build
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NewPerfection
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Reprappers
QuoteRalfWonder why noone have had this problem before me..
Probably because you're the first one to try hooking up a servo to a Sanguinololu. Or, you're just the first person to post about it online.
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NewPerfection
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Reprappers
QuoteDizzydbdI am trying to push a 1.75mm crooked filament through a 2mm PTFE tube to guide it to the hotend and the force to do that will increase exponentially with the length of the tube.
Yeah, that filament will be kind of useless in a bowden setup. Where did you buy it from? Have you asked for a replacement?
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NewPerfection
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General
Try adjusting the potentiometer on your extruder driver to give the extruder more power. Not too much - you don't want the driver or motor to get too hot.
If that doesn't work:
Loosen the adjustment on your extruder so that you can push the filament through by hand. You may need to take apart the extruder to do this - I'm not sure as I can't really tell from your pictures how your extruder is
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NewPerfection
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Printing
Quoteequinox86What is a reasonable rate? I notice that there is resistance but I figured that the nozzle itself what causing that. Filament continues to flow but it does take a bit of force.
You should be able to get a consistent stream of plastic coming out of the nozzle.
Quoteequinox86Sometimes I hear pops and see bubbles in the filament. Could this be caused by the hotend as well?
This is pro
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NewPerfection
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Printing
QuoteromonOk the only gcodes that I know of or can find is in Sli3r and are.
What about the gcode file that Slic3r produces after you process an STL? This is what gets fed to the printer. I'm not sure where the Windows version of Pronterface stores the resultant gcode file, but take a look in the same directory as the STL that you sliced. You can open a .gcode file in notepad.exe (right click,
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NewPerfection
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Printing
QuotehhbhagatI am not able to get the exact model of the hotend because it was part of a preassembled Massdrop. But here is the webpage:
Hmm, the extruder in the video you posted does not match the extruder shown on that massdrop web page. Does your extruder have an adjustable plunger, or an idler bearing? I can't tell from the video.
QuotehhbhagatThe hotend is PLA and ABS compatible. Ubis .4
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NewPerfection
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Printing
Simply limited by the maximum travel of the Z axis, which is usually limited by the size of the frame. The maximum printing height can be increased by lengthening the Z axis on most printers. Some, such as the Prusa i2 or MendelMax, have the Y axis and Z axis lengths tied to each other, so it is not easy to scale one without scaling the other. Another consideration when scaling an axis up is t
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NewPerfection
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Reprappers
QuoteRP Iron ManUnfortunately, my hardware supplier does not carry M3x3 button head screws. These are actually pretty hard to find so I will probably have to get these from overseas
Are you located in the US? If so: or ($0.04 each or $0.03 each)
If you are concerned about looks, another option is to countersink the M3 hole and use a flat head screw: or ($0.06 each or $0.01 each, plus the c
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NewPerfection
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General
It's entirely possible that the hot end is the culprit, especially since the quality of Chinese-made hot ends is often quite poor. Can you feed plastic through the heated hot end by hand at a reasonable rate? If not, the hot end is the problem.
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NewPerfection
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Printing
QuoteRP Iron ManIf anyone notices a major problem with this design please let me know.
The issue I see is that the set-screw cannot be tightened to stay in place, so would require a thread locking compound to keep it from working loose. Also, I could see many people not reading directions properly and screwing in the set-screw too far and shearing the thermistor leads.
A possible solution to co
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NewPerfection
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General
Quotekrakadu... direct drive gear ... using 3mm filament ...
Honestly, I'm surprised this worked at all. Usually direct-drive extruders just don't have enough torque to drive 3mm filament at any reasonable speed.
QuotekrakaduThe guy who's firmware I'm using said he had it set for 1.75mm filament but I'm not sure where it shows. Is it even in the firmware? Isn't it slic3r's job to calculate that
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NewPerfection
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Reprappers
QuoteREPRAP SQUADmonitoring temps without an extra thermistor might get hairy.
Um, what? You would monitor temps in exactly the same manner as if the power to the heated bed were running directly through RAMPS.
QuoteREPRAP SQUADYou would also have to change the firmware.
No firmware changes necessary to use a relay, except maybe to disable bed PID/PWM if enabled and using a mechanical relay is
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NewPerfection
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General
Also see:
You can get belts and pulleys, smooth rod, linear bearings, ball bearings, couplings (motor to drive screw), springs, raw materials (such as aluminum plate), screws, nuts, and bolts, lead screws and nuts, and more.
Building an enclosure would be a good idea as well.
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NewPerfection
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General
QuoteRP Iron Mana set screw secures the thermistor in the heater block and eliminates the possibility of the thermistor falling out.
I'm having trouble visualizing how this would work without the set screw shearing the thermistor leads or damaging the thermistor itself. Have you tried this solution in practice? Maybe I'm thinking about it wrong and it works just fine.
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NewPerfection
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General
Quotehp_be-aware, the 45mm/sec in the configuration file is a suggested configuration. where the max_feedrate is set to 45 mm/sec was working pretty well for me, the thing to take notice of is the acceleration and E_JERK.
with these geared motors you have to reduce the acceleration.
Something must be limiting top speed then. Probably the max step frequency of your firmware and a 16MHz Arduino.
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NewPerfection
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For Sale
QuotessRNA... an accessible printer ... at least a 1 micron accuracy ...
Good luck. I have yet to see a printer capable of doing this outside of highly experimental, research-oriented hardware. Such as:
Plus, this really isn't the right forum to be asking in.
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NewPerfection
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General
What material are you printing in? Have you noticed your extruder skipping at all?
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NewPerfection
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Printing