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Printing issues ...
I don't speak Mandarin to make sense of that diagram, but it's not what I'm familiar with. The four (apparently) output posts are unusual, though the diagram appears they're to be wired in parallel, probably to get sufficient capacity in the screw terminals.
What I'm about to install on mine is a Crydom D1D40. There are (dramatically) cheaper ones available, but I've read posts from people who
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IMBoring25
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Reprappers
Three words...Solid State Relay. Get the bed current completely off the board, especially if you want more power. The screw terminals for the bed power are a known weak spot of the Melzi. Especially if you want more power, do the bed power right before it gives you an excuse to upgrade your electronics too.
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IMBoring25
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Reprappers
Have you previously been able to attain that bed temperature? You may just not have the pow'r, captain, especially if you have a thick heat spreader on the bed. Checking resistances and voltages would give some idea of the circumstances.
As for the hot end, you've changed configuration. You probably need to do an M303 PID tune and store the values in the firmware or EEPROM.
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IMBoring25
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General Mendel Topics
What version are you using? My 1.2.6 doesn't do a full-height skirt with ooze prevention on.
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IMBoring25
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Slic3r
This is still a slow process. Especially if you observe the best practice that suggests you supervise prints and have a day job, it can take a long time to make major projects on a single machine.
It also keeps you printing with a machine down, making your own repair parts if needed, and allows you to have machines with different capabilities...Build volume, temperature limits, enclosures, mult
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IMBoring25
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Reprappers
No, because there's also a move that exceeds the minimum travel after retraction.
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IMBoring25
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Slic3r
The 3mm v6 direct drive version doesn't.
Some designs need it regardless. Some designs need it to support some types of filaments. And whether its presence limits the temperature capabilities of the extruder depends on the design.
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IMBoring25
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General
It does appear the manifold check doesn't show up when it's running windowed in Repetier. I've always run it separately, which gives more flexibility, and 1.2.6 has some neat new features.
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IMBoring25
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Reprappers
I've never tried it myself but I've read reports that it does stick. Some report being able to use PLA as a soluble support for ABS ( dissolving with caustic soda).
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IMBoring25
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Reprappers
Manifold means it's a good mesh, in a sense, watertight, with all the facets facing the right way and having common edges with all the adjacent facets. Slic3r shows in the lower right corner whether the model is manifold and how many errors there are.
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IMBoring25
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Reprappers
I just checked three laptop power supplies I had on hand. Like dc42's experience, they all had continuity between the negative DC pin and the AC earth. The modern ones had no measurable resistance. The 1999 model checked as a megohm.
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IMBoring25
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Reprappers
I don't see why this would have any impact on the likelihood of coming in contact with +12V. If the case shorts to +12V, you will be coming into contact with either a floating or earthed +12V, and you will form a part of a circuit to earth. The only question is whether there's a redundant current path to earth to reduce the current through the part of the circuit that includes you. Both my OEM
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IMBoring25
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Reprappers
The glib answer would be that's what RepRapPro's instructions said to do, and it made sense to me since it would keep you from being the only path to earth in the event of a short to the case (which at 12V shouldn't be dangerous in most cases, but could certainly be unpleasant).
Upon further investigation, it appears there are a number of industry standards that dictate that approach, and some h
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IMBoring25
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Reprappers
Please don't post the same question in multiple sections.
Modern wiring should have three mains wires, one that runs to L(ive), one that runs to N(eutral) and one that runs to G(round) or a symbol including vertical line and three decreasing-size horizontal lines in it, with or without a circle around them (that one should also be run to the adjacent negative post).
As long as the wires are sui
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IMBoring25
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Reprappers
If you can drive it manually with success it sounds like either your bed size or zero point location is not configured in your slicer to match your machine hardware/firmware configuration.
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IMBoring25
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General
There have been two stable versions and fifteen experimental versions since 0.9.9. Is there a reason you're still on it? When I find a bug with software, trying different versions is one of the first diagnostic things to try.
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IMBoring25
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Prusa i3 and variants
As much smaller as the nozzle opening is compared to the melt chamber, I don't think the viscosity of the filament will ever get low enough to meaningfully empty out the melt chamber with temperature alone, and I would be more concerned about denaturing the residual plastic by trying. The cleanest you'll ever get it would probably be to run PLA through it at 200 until you're consistently getting
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IMBoring25
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General
That's not sticking in a little more...That looks like an entire perimeter, sometimes two.
If you're printing external perimeters first, I'd say you're not getting extrusion back promptly after your retractions. That could be because heat is creeping up into the heat break during the retraction and increasing resistance to the extrusion. Do you have a hot end fan installed and is it running?
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IMBoring25
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Printing
What is your value for the percent overlap between perimeters and infill?
By the way, .1 and .05 are both greater than .02, so not sure what layer heights you really mean.
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IMBoring25
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Slic3r
I didn't have any trouble feeding Ninjaflex through my Bowden. I didn't get it sticking to the bed before I moved on to other projects for a while, but I didn't have any trouble feeding it.
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IMBoring25
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Prusa i3 and variants
8 foot Bowden?!
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IMBoring25
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Printing
My threaded-rod Mendel doesn't seem fiddly to me, and I don't have autolevel on it. My expectation is some OCD with initial setup goes a long way in avoiding the ongoing fiddliness. It makes sense that if it starts square it would stay square but if it starts with preload it would creep with heat/cool cycles and humidity variations.
ETA: And, of course, quality parts go a long way too.
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IMBoring25
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General
SeeMeCNC supplies a RamBo, which is 8-bit, but it does seem to work well. The Max also has considerably greater build volume in stock form than either of the other options.
Consider shipping time in deciding on a model and supplier. In the event something you don't have a spare for breaks, having a machine down for weeks on end waiting for international shipping is not a swell time, especially
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IMBoring25
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Delta Machines
You're asking for a build volume four times that of Stratasys's $750,000 Fortus 900mc and printing move speeds about four times what's typically used for non-printing move speeds on a RepRap. It's a bigger undertaking than the Department of Energy's project that had to pellet-feed the extruder and use a finishing pass with a machining head. What's your budget?
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IMBoring25
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Wanted
You don't necessarily need to buy a multi-extruder system. Those should be easier to incorporate (if the mounting is compatible with what you already have), lighter, and more compact, but you can find or design parts to adapt your X carriage to accommodate multiple single extruders, which would give you the flexibility to use one high-temperature extruder and one inexpensive extruder, or one dir
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IMBoring25
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General
When our SST 768 at work won't reuse a modeling base it comes after a bed-leveling routine, so it seems to be because it has decided the base is either bent, twisted, or both. There is likely a limit to how much you can deform the base while removing the parts before it takes a permanent set and your model of machine may even be more critically affected by the heat cycles. It would probably reu
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IMBoring25
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General
What is the last G1 command that includes a Z value before the first string of G1 commands with X, Y, and E values in your gcode?
Are you autoleveling?
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IMBoring25
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General Mendel Topics
Slic3r has a field to use volumetric extrusion values and the tooltip indicates it is supported in recent Marlin.
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IMBoring25
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General
The 2X has a build volume of 246 x 152 x 155 mm. I would be surprised if there's a version of i3 floating around that had any individual part bigger than that.
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IMBoring25
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Prusa i3 and variants