I'll look if the voltages are as described here, would the symptom be lost steps? I dont think i am missing steps, or they're very well placed not to drift the head position all over the place. Edit: tried OctoPrint, and an slic3r0.9.0b so unlikely it is that.by Jasper1984 - Reprappers
No set screw there, but i can see no movement relative to the axle of the servo and the pulley, never mind the ~2.5mm the print shows. Also it seems to be selective about when it happens..by Jasper1984 - Reprappers
My reprap prusa seems to have become a bit lazy. It doesnt do this test grid well.. The first one is good, it did work. (i stopped the printer after a while, the model also has a wall in it) It doesnt seem any slack anywhere.. The seem to be anywhere where it has slack. I didnt change the Marlin firmware, the output in pronterface is in the attachment.. I have no idea what is causing it. Maybby Jasper1984 - Reprappers
Sorry for being so exceedingly slow moving! Been very distracted by the cryptocurrency revolution.(ethereum in particular, but also stuff like namecoin) Based on garyhlucas, thats what i made, but printed PLA as you said, guessed it would work myself though :p The design could be better by having the strips come from both sides, or maybe even four sides. It would have less ability to move sidby Jasper1984 - General
Must have a relay around somewhere.. But it isnt where it should be.. How would you attach it, hot glue i suppose? Havent done that much, but not nothing, have a little setup.. The orange kapton tape constrains the coil and i use rivets both as the moving end and as the core for the coil. It buzzes, both at 5V or 12V but it soon finds a way to break the loop permanently. The loop is closed byby Jasper1984 - General
I have one idea that uses the filament and bowded tube, so the E position effectively controls the pen plotter.. Still have to try it. I take too long on shit, am unreliable.. I do have this design, in the .scad there are `..._add` and `..._sub` thingies in there and the principle is that if you have some object(like a carriage) and add and then substract this in a way that is usable, you haveby Jasper1984 - Let's design something! (I've got an idea ...)
Its something like:h=10;ch=7;w=5; l=30; r=3;t=2; //ALL THESE ARE WRONG difference() { union() { for(x=/2) translate() cylinder(r=r+t,h=h); //The cylinders. translate([-l/2,-w/2]) cube(); //Center bar connecting. } for(x=/2) translate() cylinder(r=r,h=3*h); //Cut out holes. }`h` is the height at the cylinders, `w`,`ch`, is the width,height at the center section, `l` isby Jasper1984 - Let's design something! (I've got an idea ...)
I have zero experience in anything like that, but I think making a plasma cutter like that is a whole project itself? Maybe you should look for a trick for notching those, for instance this search, be sure to consider if/how it applies to your case. You could also a design that takes fewer notches, or look for a business that might do it for you, or something. (PS: the website page you linked tby Jasper1984 - Let's design something! (I've got an idea ...)
EDM is probably good for materials that other machining has trouble with, and maybe has a 'cheap-initial cost' way to slowly do regular matching? I see you have much improved the wiki page Added a bit in text about how the doorbell thing works. I think at least for nozzles that approach is much simpler. It may be good for as moving tool on the reprap tool, the firmware would have to go forwardby Jasper1984 - General
Actually thought you were using the 'insert premeasured filaments' method, until i looked closely at the machine If you want to make models yourself, I see a combine-multiple-stl-file entry in slic3rs menu, looks like that can make a multi-material .amf file. So if you know how to design things presumably you can make .amf files.by Jasper1984 - Look what I made!
This is the obligatory article to read on this, though i much doubt it is the last word. The idea is that this is a way to put means of production in the hands of people. Reprap isnt really the only project, there are many small projects out there, and even something done for fun and written about can be found on the internet now. There is also opensourceecology.org, but i am not sure about itsby Jasper1984 - Let's design something! (I've got an idea ...)
I just look at the volume slic3r indicates 1cm³~1g @ ~0.02€/g for PLA/ABS, Cura can indicate the cost too. (Maybe slic3r should add the feature, its trivial)by Jasper1984 - Look what I made!
> It sounds like a wiring fault, I.e loose connections, or broken wire etc. Embarrassingly, looks like that was exactly what is was, one of the things terminal screws was loose some. At it was the one that was too fat to fit properly before too... I dont get how I missed that, sorry for that.(as an excuse i accidentally hit 'post message' before i was done thinking it through..) I dont get hby Jasper1984 - Reprappers
Pretty sure the mega hasnt died I can connect to it, output in attachment. All axes move, i waited and the axes kept moving as they should. Then i turned on the bed, the bed light went on only shortly, and then nothing moved. (no thunk) Hmm i measure 4,2V on the top of the power inputs.. (when motors not moving) Straight from the power supply I read 12.4V. Maybe it loses power or has some sort oby Jasper1984 - Reprappers
Sometimes my (reprappro)printer seems to refuse to move(its not mechanically stuck), or heat anything up. This happened before, i assumed it was related of overheating of the electronics somehow, which i fixed by making the end of the 12V power into the Melzi fit better, the issue disappeared then. But now it does the same without apparent heating up. Turning off the power, waiting a (longish)whby Jasper1984 - Reprappers
Neat, well done. Wish the process was less arduous though.by Jasper1984 - Look what I made!
Does it do stuff with the motors to avoid vibration or does the frame somehow do that, or does the copter really not vibrate much? I think the first of those? If so how are those motors controlled?by Jasper1984 - Look what I made!
Does the up/down motor yield useful control or is the gravity+spring+controlling time of application idea basically good enough? The former has better control i expect.. I read those articles A2 posted. Dont see how anything in there can do better than vegetable oil, or how it would be better, to be honest. Also no idea how bits of carbon in the oil helps. Maybe it smoothes out the electric fielby Jasper1984 - General
* What is the rate of erosion, (nonsystematic)error of this? To be honest i think it might be slow for use as for instance an alternative toolhead.(But fast enough to make holes for hot ends) there is already a method, but more is better. * Rate of erosion of tool. Graphite is cheap and probably doesnt erode quickly? * Do there need to be measures to remove material? Something like air jets soundby Jasper1984 - General
True, i still get some effect due to the bowden. Speed changes seem to cause a bit of overextrusion sometimes. Lowering speed or increasing acceleration decreases speed changes. I think that is probably what makes the bowden on the ultimaker work well.(it has a rigid frame to deal with the accelleration.) What i said about friction and bowden was about the video, where flexible(apparently a bitby Jasper1984 - General
If you get few people following the survey that might be because there were plenty of previous surveyors. Maybe you could search for them and ask them for their data.by Jasper1984 - General
I have the same thing.. Also i think some quality issues might be caused by the bowden. I think the best case is to have both. I mean, just have quick-fit or some with really short tube underneath, and you can switch out the short tube for a long one. Getting the tubes on like that is really easy, btw M4 nuts fit right on those 2mm-4mm inner-outer PFTE tubes basically you slide it in some slot aby Jasper1984 - General
Cool, isnt weight on the carriage the-lower-the-better, though? Dont think there is a way to do that neatly with a pinion though. Besides, this cant oscillate.by Jasper1984 - General
Tried different baud rates? Probably it has to be 250000. (the COM has to be right too)by Jasper1984 - Reprappers
I got the same issue later on but it is much less now. It seems like the screw terminal was the issue, one wire in it seemed 'dirty'. It barely fit the screw terminal too. So i basically re-did that wire making a new end to go into the screw terminal, that fixed the issue. Apparently it could create too much resistance in there.(this is all my case of course)by Jasper1984 - Reprappers
You could try running slic3r alone and then loading the gcode with repetier. This sounds like it could be a bug. This issue looks a bit like it, but not clear to me. If it is, moving/deleting the configuration file `slic3r.ini` might fix it. (I am not sure what about 'validation' is so time consuming..)by Jasper1984 - General
If you just need Z put it on a floating barge on a rail and drip water from it. Or dont, just throwing it in here.(idea from peachy printer, of course)by Jasper1984 - General
I dont know of any besides the reprappro either. Might have to start with an existing printer suitable for extension. That is basically the electronics, if not bowden, it has to be able to deal with double the weight on the carriage. Afaik that affects acceleration it can deal with, and its potential to make the body flex or make the steppers miss steps.by Jasper1984 - Reprappers
I tried reproducing the nozzle manufacturing wiki, but havent succeeded yet. I couldnt get the drill centered. I think it rotates fast enough,(not sure how fast that exactly..) but in the video he is able to rest his hands on something, the way i was doing i i couldnt. Try again in a different way later. I am green at this.. I didnt, realize how tightly those m4 acorns fit.(4mm do'h) I can screwby Jasper1984 - Let's design something! (I've got an idea ...)
> Gone are the days when we used to mess about making explosives in chemistry lessons I think. He probably talked on the internet about it? Before the internet, he couldnt have done that, they wouldnt know. And it hardly went wrong either, at least not in a way that warrants more action than is taken against it currently, maybe kids trying to make gunpowder actually produced some good chemisby Jasper1984 - General