Quotenophead Yes the Corsair page shows the 8 pin connector having four yellow and four black wires. They obviously cut corners and used all black wires but had to put yellow sleeving on so their own staff could solder it to the correct PCB hole.It likely was more an aesthentic decision then to cut corners. It's a modular power supply and aside from the main motherboard bundle which looks likeby cdru - Mendel90
QuoteNoobMan But personally i think it must be because they are americans. Perhaps some among them may be ok, but otherwise as nation they tend to do exactly that... Do whatever they want - and invent excuses to make bad things appear as good or legit. Like in the case of makerbot becoming closed source. Or if you want to go other areas, double check the "liberation" of petroleum countries, etc.by cdru - Controllers
QuoteBoByS Based on the formula, I think that 4mm^2 will be good enought, but I still need a help..RAMPS has 5 and 11amp fuses for the main electronics and heated bed respectively. 11 amps chassis wiring is a 20 AWG cable or approximately .5mm^2 for you metric loving builders. That's the bare minimum and doesn't give you any safety margin. Anything 1.5-4mm^2 will be fine with the larger the beby cdru - Controllers
What type of bearing/bushing would you be using on such a rod? I'd think any type of conventioanl bearing utilizing balls or a rolling metalic surface would quickly destroy any type of teflon coating. A teflon sleeved bearing or bushing might be suitable.by cdru - Mechanics
QuoteLucasGelf Comparing Mendel 90, Prusa i3, Printrbot Plus V2, and Robo 3D. I am looking for a couple of things. For background, I have a Printrbot Jr. V1 that Printrbot has sent me parts for to convert it to a simple because it broke. Do you want to BUILD your own? Assemble a kit? Or buy a already assembled printer? The answer to that question will narrow down the field some. What's betterby cdru - General
Uno won't work, not enough IO pins. The Uno has 14 digital pins which can't support 4 steppers (3 pins each) plus 3 end stops. This is before you add anything else you might want to use. The Mega has 56 digital pins in addition to many other additional capacities. There's a comparison chart of many of the most popular boards here.by cdru - Controllers
Didn't see your code above before I posted. Your regex has a few minor flaws depending on how valid you want to consider your inputted data. The original wouldn't find negative extrusions (retractions) but you fixed that I see. Extrusions where there isn't a digit to the left of the decimal point wouldn't be caught but your slicing program may always put a zero there even though it's not requiby cdru - Mendel90
Can you share your gcode files? What are you using to generate the gocde and what firmware does your printer use? I'm wondering if your gcode is using relative mode for extrusion instead of absolute. The script also looks to be a quick and dirty implementation that probably usually works, but not always. There are a few things that I can see where it makes presumptions about the gcode that may nby cdru - Mendel90
Have you tried to look to see if their is a retailer/distributor in your area on Gate's website? They may be able to order you the particular length and pitch you are looking for. I found some of the lengths of the 2MGT and 3MGT here. The filtering doesn't seem to be real accurate so if you know the part number from here you can probably find it quicker if they carry it. I found Motion Indusby cdru - Mechanics
Quoteregpye Quotejbernardis I just took the right sized DC connecter from an old wall wart and connected it into the main RAMPS power connector on the 5amp rail. It works just fine - just make sure you get the polarity correct. Could you please expand on that, maybe with a drawing or photo?He just used the 5 amp connector (the one closer to the corner of the RAMPS board) as a source for 12v. Heby cdru - RAMPS Electronics
Quoteneildarlow 3) Adopting a signed display of X and Y with 0.1mm resolution dictates that the X, Y and Z labels are removed from the coordinate display line. It now appears as follows: Sxxx.x Syyy.y zzz.zz where S represents a +/- character. This uses the full 20-character line width but, I think, the display fits well with the existing layout. The signed X, Y coordinate display is controlled bby cdru - Mendel90
Quotelawlhwut I was wondering how scalable the current DIY FFF 3D printers are. From what I understand, the DMLS printer is only different in the sense that it uses a different method for development, and the actual mechanics behind graphing should be the same. Am I correct?I think that is vastly oversimplifying the differences. Yes the mechancis of moving things in a cartesian method would be siby cdru - General
QuotendujarHmmmm..my only advice against RAMPS is how it deals with its MOSFETS...it has a flaw in design that makes them enter in resonance with the hotbed and, unless they are quite powerful, they tend to fry:That's why you can run down to your local RadioShack and pick up this guy for a few bucks. Takes care of a lot of the problem. A fan blowing on the RAMPS/heatsink/stepper drivers isn't gby cdru - Controllers
Are you using 1/4-20 or 1/4-16? You say you are using 1/4-20 but the calculator copy/paste text say 1/4-16. 1/4-20 is normal threaded rod while 1/4-16 I think is acme lead screw usually. The lead screw is better for what it's being used for, but you probably don't have a lead screw since you picked it up at Lowes. Use the 2519.68 number for M92. Lower M203 to 60 (for 60 mm/min). Try to moveby cdru - General
Quotenophead It's only 1/16" thick aluminium so I don't see how it would hold a threadI used 3/4" square tubing as 1/2" was a PITA to find locally, but I'm pretty sure it was still 1/16" wall thickness. I'll have to measure when I get home. M4 screw has a thread pitch of .7mm, 1/16" is 1.5875mm so you get a little over 2 threads. No it's not ideal. 1/8" sidewalls would give you the rule-of-tby cdru - Mendel90
Quotenoonerly Also electronics. Many different boards are listed, however i had a hard time finding out what advantages they have over each other.If you didn't find it already, there's a comparison chart of major features here. Quotenoonerly-Do i go for a "normal" ramps set or should i aim for a different board ? -Would you prefer a Rumba over a Ramps?For a first build, there are some convienencby cdru - General
Quotemacuser1I attended your prestigious occassion last year and was willing to travel the miles, but what is the Port O Potty sittuation? A weary traveler shouldn't be subject to outdoor facilities in this harsh winter. Thanks for your corespondance.Port-o-pottys shouldn't be an issue this year. Northern Indiana got enough snow there probably isn't enough level surfaces for them to sit. Thereby cdru - General
QuoteUncleahpek I read all the details too. Sounds overly promising.I don't know. With print speeds of 100mm/hr for the V821, I don't think that's promising very much. There's also discrepencies between the features and specifications for the build platform size. Yeah it's little stuff. But it still reflects poorly for a product that otherwise looks nice, but isn't all that remarkably differenby cdru - General
After breaking my end capsI printed, I found it easier just to drill and tap the alumnium tube at the appropriate place, and then not even worry about the end caps.by cdru - Mendel90
What's the resistance between the two solder pads? Your particular bed's resistance may be lower than normal in which case it needs more current from the power supply. If it's higher than normal, then it needs less current, but then also doesn't get as hot. Presuming you have a 12v power supply, divide 12 by the bed's resistance to get the current. Then multiply that number by 12 to get the wby cdru - General
QuotegarakMany of the low quality items we associate with china are the seconds off the assembly line that didn't make the cut for the brand name. Other things are just made cheap because we are demanding a cheap price. When you have no brand to protect why wouldn't you sell crap because people want it cheaper.In some cases that is true, but not always. In other cases the product is exactly the sby cdru - General
QuoteThinkyheadI haven't seen any examples of a universal fan duct on Thingiverse, and the variation there is so diverse that it's hard to tell what is intended for PLA printing and what is more suitable for ABS printing.Which is why you go with a design that has two independent fans. One for blowing on the extruded work if desired, and another that blows on the hot end.by cdru - General
I'm going. Must be a whole hour drive. Might drag some others from the local Makers group. Notsure what to expect...it'll be my first show.by cdru - General
Doh. I feel really kinda foolish now. I'm not sure where I got the .05ohms for the sense resistor, but I finally got some free time to double checked things and it wasn't .05 ohms. It was .3 ohms. That put my current at 1/6 what I thought it was. Computing with the correct value, 1.5 amps * 8 * .3 ohms = 3.6v, well over twice what I could get Vref to be. I had another pair of driver boards frby cdru - Stepper Motors, Servo Motors, DC Motors
QuotekwikiusFor highest performance unidirectional carbon is used.Any discussion about higest strength, performance, etc is pointless unless what context it would be used and evaulated with is defined.by cdru - General
QuoteNewPerfection I run my Z axis motors in parallel, with a Vref of 0.4V, giving about 1A total current, or 0.5A per motor. For most machines this should give plenty of power to drive the Z axis.I was basing my calculations on the "reference forumla" to get the full torque and holding power. As I mentioned above, if I go lower than the 1.2v (.6v/motor) both motors squeal and don't move. That'sby cdru - Stepper Motors, Servo Motors, DC Motors
I'm struggling in the commissioning of my Mendel90-based printer with getting the x-axis consistantly parallel with the bed. Once I've manually turned each of the z-axis lead screws to get the hotend just kissing the bed, once I raise and then lower it a signifiant amount, say >50 mm, or home the z-axis, one side is off by a noticable amount. I'm guessing it's missing steps. I'm using theseby cdru - Stepper Motors, Servo Motors, DC Motors
Quotetjb1that sells PLA infused with carbor fiber and other specialty filaments.I still struggle trying to figure out how carbon fiber infused filament would make it stronger. In order to be extruded at some always variable length/width/height the fibers would need to be extremely short. And being so short, you lose all the advantages of the long carbon crystaline structure that gives carbon fibby cdru - General
What are the dimensions of the fan? It looks like it's about the size of the stepper motor, and presuming that it's a NEMA 17 stepper, that makes it either 40, 45, or maybe 50mm square. There are a variety of fans here (or Newark or Farnell or Mouser or...) that would fit those sizes. The question then is the depth.by cdru - General
QuoteREPRAP SQUADThe amperage doesn't matter if you have more than needed because it will only use what it needs so having extra amperage is a good thing. Having the extra makes your power supply not work as hard as one with barely enough amps, which will help your PSU last longer.It may not be a consideration, but optimal efficiency of the power supply usually is obtained when the required outpuby cdru - General