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Printing issues ...
Winding filament probably has a cheaper material cost and produces the lightest component, but many uses for a carbon fiber tube can be met without a winder by using a bi-axial CF sleeve drawn over the same mandrel and compressed with the same heat tape. With that said, I have a one-off back burner project that would really lend itself to a filament winder, but I don't know if it is worth the in
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vreihen
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General
I like AndyCart's idea from the Cherry Pi to use spherical magnets on the effector plate, and cup socket (allen) drive cap screws with a ball end mill bit for the rod ends. There's a few posts in the comments section of his Cherry Pi Thingiverse page about te different ball/socket/magnet combinations that he tried and which ones work best.....
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vreihen
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Delta Machines
You didn't say what type of printer or extruder system you have. With a long Bowden tube and geared extruder, 4.5mm retraction and 100mm/second retraction speed fixed most of my string problem in Cura. I'm still not 100% dialed in yet, though.....
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vreihen
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Printing
Did you remove the "5V USB" jumper cap next to the USB connector? Just my guess, with a big disclaimer that I accidentally popped the on-board 5V power and have to feed my board from the USB 5V power so I would verify this against the schematics.....
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vreihen
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Printing
Quoteswoozle
What are folks running for retract distance with the E3D hotend, 1.75mm bowden version?
I realize this takes a bit of tweaking for each individual extruder/tube setup, but it would be useful to know a typical successful distance.
My Bowden tube is about 700mm long with a geared extruder, and for PLA my retraction distance in Cura is set for 4.5mm and retraction speed is 100 mm/sec
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vreihen
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General
Quoteallempty
I have not yet got the SD card working on the display board but the one on the megatronics 2 works ok.
The 'stop' switch does not function either but at present I am not to bothered about this.
There's another thread on this site about these two issues. From what I can determine, the little adapter board provided in this package does not pass the kill switch or the external SD pin
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vreihen
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Controllers
The test firmware only wiggles the steppers, strobes the LED lights, and outputs diagnostic messages to the USB serial port. It does NOT talk to Pronterface or any other printer control programs.
Also, the default of 250,000 baud is a non-standard speed that is not supported by some computers. Fall back to 115,200 baud and see if that fixes everything.....
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vreihen
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Printing
Did you try PLA with just the heat on bare, clean glass? Your prints are trying to give you a hint when they stick to the glass through the tape.....
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vreihen
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Printing
QuoteAndrewSpencer
I can tell you how long an inch or .030 or .015 inches are but, what the heck is a mm?
Approximately 0.039 inches. Hey, you asked!
Seriously though, where's your sense of adventure? Do you want the rest of the world laughing at you as the last holdout on ancient imperial units? Take this time to learn metric by immersion in it! Don't be a G20 (hint, hint) wimp, be bold,
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vreihen
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Repetier
Quoterichrap
@vreihen - Thanks for the thoughts, I'm very aware 'generic filament' is re-sold all over for various prices. Manufacturers making good quality filament are proud to brand it, re-sellers who sell good quality filament are proud to name the manufacture, if they don't then my advice is Do Not Buy It. It's always the very first question I ask any filament seller - Do you make it, if not
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vreihen
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Printing
Have you considered starting a RepRap user's group or club at your University?????
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vreihen
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Reprappers
Quotetron
the E3D looks cool but when I saw the specs is a big hot end and it is in England, I am in the USA I do not want to wait for it to get here.
There are at least two dealers in the USA with the E3D in stock for shipping today the last time that I checked:
http://store.makerstoolworks.com/
http://www.filastruder.com/products/all-metal-e3d-hotend
I purchased mine from MTW, and they ship
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vreihen
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General
Try touching a bunch of spots on the heated build surface with a thermocouple, contact pyrometer, or even an infrared pyrometer if you must. I gather that you don't have a thermal imaging camera? (Neither do I.) The brand new Mk2 heatbed that I recently purchased has an ever-so-slight warp, which leaves one corner lower than the others and not fully in contact with the glass. That air gap is
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vreihen
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Printing
Quoterichrap
@vreihen - Anyone can make their own standard, this is more about an 'open mechanical standard' hopefully without using lots of plastic casings that are not designed to be refilled and only contain ~300g of plastic filament costing $80+
This 'standard' should not stop people branding up the spools however they like, labels, printed cardboard with logo's or coloured with the manufactu
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vreihen
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Printing
Did you check to see if your bed is being uniformly heated? Is it level so that sliding a sheet of paper under it at Z=0 and various X and Y coordinates has the same amount of drag in each location? DId you clean your bed, and apply an even coating of whatever you may be using for extra grip?????
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vreihen
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Printing
I'm using a 600mm Bowden tube and E3D hotend with Cura as the slicer, and have it set for 4.5mm retraction and 100mm/second retraction speed with PLA. Not that these are magic numbers by any means, but the retraction speed is three times what you have set.....
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vreihen
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Printing
The test firmware isn't intended to talk to Pronterface like a printer, but rather to send diagnostic information to a serial/USB troubleshooting terminal. It is gibberish to Pronterface.
The test firmware should wiggle the stepper motors in sync and also flash the board LED's one at a time in a row, to verify that the hardware is working. If your steppers aren't moving, check your 12V supply
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vreihen
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Printing
Why does everyone hate on Cube 3D for making their own filament cartridge standard?
Seriously though, let me play devil's advocate. With all of the varying qualities of filament on the market, some of us would like the hope of being able to figure out who the manufacturer of re-branded filament is by looking at pictures of the spools before we order. If three different vendors are selling the
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vreihen
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Printing
Some computers have problems with 250,000 baud. Try 115,200 baud on both ends and see if that works.....
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vreihen
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General
Quoterepetier
You used 0.91 REV 5 and current version online is 0.91 REV 6. Soon you will get 0.91 REV 7.
Can I slip in a small thread-hijacking question here and request that you post a new thread on this forum whenever you release a new REV? Please also include the release notes, so that those of us who don't check the auto configuration site every day will get notified of new versions and w
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vreihen
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Repetier
I don't know anything about that combination, other than that I think Repetier's firmware supports it as one of the DUE family boards. Is there a Marlin build for it? I don't think that any board is a bad decision...if you are comfortable with electronics and firmware and are up to the challenge of making it work. I still haven't made a decision on what 32-bit board I will be upgrading to, but
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vreihen
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Controllers
Delta printers are supposedly pushing the edge of 16 Mhz CPU performance, due to the complex calculations they need to do. The current crop of popular 8-bit controllers are obviously fine for a Cartesian printer, and support is easy to get. If you plan to build a Delta or push the envelope with insanely fine microsteps, then you may want to consider a faster processor or 32-bits. Otherwise, es
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vreihen
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Controllers
Quotestrelly
Just a quick update to my stuttering printing.
I've commented out the full graphics smart controller from Marlin and i'm currently printing via USB with no problems whatsoever. I guess i'll head to the reprap discount forums for some advice.
There is a thread here about adding support for the full graphics controller to Repetier firmware. They concluded that it was a CPU hog, and
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vreihen
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Delta Machines
I'm pretty sure that the SD pins were left off of the adapter board, and getting both the kill switch and SD card working is simply a matter of soldering a few jumper wires onto the adapter board to route them through.
Also, I believe that this is the same adapter board used with the non-graphics display, if you want to go searching for schematics.
I'll figure it out eventually, if nobody else
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vreihen
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Reprappers
Is dry run mode enabled?????
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vreihen
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Repetier
I have the same package, and gave up trying to figure out which pin is being used for the external SD card socket. The micro-SD socket on the board works by default, so I just bought one of those and an external reader for my PC. I haven't taken a multimeter to it yet, but I suspect that the little adapter board that sits on the Megatronics 2.0 board does not have the SD card pin(s) or wired
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vreihen
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Reprappers
I went through the same exact grief with Sketchup and the STL export plugin a few weeks ago, trying to draw a NEMA 17 motor mount plate. At one point, I pushed a hole through the top surface and a few extra mm higher, and then went back and deleted the projecting lines/circle that were hovering above the top surface. Some of my holes went through, and some didn't.....
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vreihen
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Printing
Could it be that you have a 24V heater cartridge?????
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vreihen
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General
Looking at the first picture, it also appears that you may have moved the right side holes and that move wasn't reflected on the top surface.....
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vreihen
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Printing
In Sketchup, the two holes that vanished are not 100% through both outer surfaces. If they were created with a "push", try pushing a bit further to break through the far side.....
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vreihen
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Printing