Replace `2d_shape` with your cookie cutter shape. I could be set with `import`, but afaik it just works on .dxf(well for 2d) Dont know how to convert .png etc to .dxf decently, inkscape? (no SAAS allowed for me, and i kindah just want it via commandline) h=10; w=40; h=40; t = 1; bt = 4; bh=2; module 2d_shape() { square(,center=true); } module shape_to_wall(t=t,h=h) { linear_extrude(heigby Jasper1984 - General
I remember seeing 240C as the limit somewhere too, i forgot where, but i see 260C here.. (the wiki page is certainly low on info) The peek is at a lower temperature than the thermistor, as it is farther down the gradient, and the material isnt under that much pressure? So if toxicity isnt the issue someone might go for it and hope it is not a screw upby Jasper1984 - Reprappers
They should have chosen a model that actually changes with Z, it'd be more demonstrative. It can be done already, but it is a pita, it could be made better by being able to get/specify a layer and some logic to figure out what gcode to send in order to go straight to some layer. I suppose if the z-height went wrong the machine might not be able to calibrate that itself because it might hit the pby Jasper1984 - General
@Irish Steve: to be honest how you describe programming seems extremely ancient and outdated.(no one uses COBOL if they dont have to anymore..) And they'll burn people at the stake for using jumps. No subroutines or routines, functions(/member functions), throwing/catching stuff.(Not that 'modern' languages are that good overall) Also open source programmers dont program like that. They work morby Jasper1984 - General
Maybe i shouldnt hammer it, my point earlier was that companies can hire a bunch of people with varying skills, but with voluntary open source projects, you can just hope to attract people that round off the skillset. Maybe an (technical)improvement might be not to leave documentation so much to the original makers. This has already happened of course, for instance in wikis. (the place where thiby Jasper1984 - General
Each kind of thermistor has a thermistor table, but i expect that if you bought it as a set, the firmware already contains the matching table. Note that these thermistors are used to control the heating, so it may make the temperature way too hot if you turn it on with a wrong setting.(it has molten carriages, PEEK of a j-head has a max temperature etc.) I think -32C hot end and 20C bed is a tooby Jasper1984 - Reprappers
I dont understand it either. Tried feeding the reprap gcode from cura once and it went crazy on that one too..by Jasper1984 - Reprappers
I have never noticed my Melzi getting hot. There must be something going on? Drawing a blank here though, have you checked for bits or metal or something possibly causing a short? Maybe right between the two terminals? With the melzi on i get 1.7Ω, was your measurement with or without the melzi? If with the melzi it is a lot lower, it might be a short somewhere. For instance a stray strand of copby Jasper1984 - Reprappers
The thing about submitting issues is that it feels selfish too. But really it isnt. The main thing you have to do is put a good effort in finding existing issues so the developpers time doesnt get wasted with similar complaints, and you have to put effort in describing the issue, version numbers etcetera. Also go to the latest release version. The same goes for suggestions in my opinion.(I feel lby Jasper1984 - General
I have had issues uploading things. I switch to epiphany(another browser) for it. Also i kindah dislike how stuff works. Well almost all websites dont do it, but imo they should; provide a download that has metadata along with it. If you download it it should include instructions, license(yeah that one is critical) where you found it ectera. (Note i put a readme.md with such data long with it) Aby Jasper1984 - General
If you squeze the hole through which the flow has to go smaller, the pressure difference should increase. It may be better to have a single small one which can sweep an area? I suppose each air speed has a duration that it has to last, there should be an optimum somewhere. If you use a servo to move a mask you can select from multiple sizes/have a continuum of sizes.. Maybe the sweeper could evenby Jasper1984 - Let's design something! (I've got an idea ...)
Looks really well-printed.by Jasper1984 - Let's design something! (I've got an idea ...)
`#define DEFAULT_MAX_FEEDRATE {300, 300, 10, 1000} // (mm/sec)` is basically what goes into the source code, not in the same place where g(/m)-codes are sent. It is compiled and then fed into the chip when programming it. I think z-retraction is done sometimes too,(not sure if it is necessarily a good thing) i dont see a lift speed in slic3rs options. Could set `--retract-lift 0`. (or `retract_lby Jasper1984 - Reprappers
Did you check the heater resistor or its lead wires dont have a short? Thermally insolating the heater bed is a good idea just to save some power, but presumably the power supply is chosen to match the high end of power use from it. > I got into this because its cool, and i have been making G-code for over 30 years (CNC Programmer). That lingo i understand, however, im extremely green on theby Jasper1984 - Reprappers
Right, think it warrants an update. The thing i used didnt work; it seems the tape is still slipping somehow. But the higher temperature made it work, kindah. It would get stuck later, presumably due to a gap between pfte and hot end again. I was able to print some things with which i made the thing i linked earlier, but modified(git is updated) not to use a widening of the pfte tube, instead keeby Jasper1984 - Reprappers
> Thanks, that's a very comprehensive answer. Bit of a compulsion to type sometimes :p FTR I dont actually have much experience making electronics.(though i know a bit) You could try asking elsewhere too, it seems likely you might have missed people who know more about it? For instance maybe on google+, r/reprap, marlins issues. (well melzi here, but probably development on the other one) I dby Jasper1984 - Reprappers
Or burn it and carefully whiff it. Dont inhale too much. The one that smells more organic is the PLA. Also have heard PLA is more shiny, but that doesnt seem true.(or indicative, anyway)by Jasper1984 - Reprappers
Getting PLA all over the place is fixable, just take it off, and this problem could be caused by other things. What is the white stuff? Just the stuff that holds the thermistor, heater resistor in?by Jasper1984 - Reprappers
What documentation are you using as guide to construction? In which part of construction are you? Wiring? You basically dont know how to wire this endstop?(make clearer what the problem is) The endstop has wiki.makerbot.com/me1 on it but it doesnt seem to lead anywhere.. I notice it has a led and stuff, i suppose it might not be a simple 2-lead endstop, i dont know what RAMPS supports.(dont knowby Jasper1984 - Reprappers
I just sort out PLA bits into a bag whenever i feel it isnt too much effort to do so. I dont plan on getting a recycler, but I hope someone in the neighbourhood, or maybe a hackerspace will eventually get one.. (dont know what issues there might be with contaminations in the stuff) You have any idea what caused it? Could be detachment, the head crashing into little extra bits..by Jasper1984 - Reprappers
Looks like temperature was blocking part of the problem, i raised it from 210 to 220 a bit and now it prints much more nicely.. Also tested ooze and that's much better than with my earlier nozzle.(which had a build mistake) Still little pips though. Thanks for the answers, suggestions and emotional support. Not sure how useful my design is, depends on what those pneufits really do and how thosby Jasper1984 - Reprappers
USB is assymetric; computers usually have USB hosts, the melzi and arduino are both clients..(or master/slave.. terminology) So dont see it happening through USB. More likely via a serial connection on one of the pins the melzi exposes. However, havent found any easy source on how to use it. I think 'in a perfect world' it'd be possible to use some of those pins to get a serial/i2c connection, aby Jasper1984 - Reprappers
Looks like the print is working otherwise. despite skipping the filament a bit now and then... Also had the spool hanging up. It goes into the filament drive right off the spool, but gets stuck when filaments cross in the spool.. Made an initial version for an openscad model(edit: some values for sizes of the j-head are incorrect) for basically this idea of holding the pfte tube but with screwsby Jasper1984 - Reprappers
The width was 4mm, so neither 1/2'' or 1/4'' closer to the latter I used the thing in the picture, the spring was way too weak, but i could tighten it a lot afterward, it is totally compressed now. I got a tiny print out of it so far, and bigger one is running. I dont really quite trust it, probably i should make a printed version of this, using screws instead of wires. this design looks good,by Jasper1984 - Reprappers
I have something like that for arduino a webcam, and small servos, have stuff printed for it too, i use the arduino code in attachment. But i do not have anything to control it from the computer, other than manually sending dir.. Idea is to use this to communicate with it, but really i kindah want to see the video when controlling it. I think that is also linux/unix specific?(not 100% sure) Notby Jasper1984 - Controllers
The tube is 2mm inner, 4mm outer, 0.15inch.. Yeah, i suppose it is hard to follow by now. I think by now my problem comes down to there being space for partially melted PLA. The taper might help, but i think need a way to make sure there isnt any room in the first place. Basically i have to slide it down, feel the end, and this set screw is too tricky to move down for that. Probably i'll add a sby Jasper1984 - Reprappers
Right i dont think it would fit, there is just room for the 1.75mm pfte tube plus about one layer of kapton. The thicker layer of kapton was in the area where the set screw screws in.. For some reason the peek tube screwed off easily, maybe it is just thermal expansion. there was a layer of PLA in there i screwed it back up, heated to pla-melting temps and screwed it far enough that the PLA squiby Jasper1984 - Reprappers
I tried the stuff i talked about, it doesnt pop out anymore, but it does clog pretty quickly and the delay to extrude is pretty long, it is probably accumulating in there again. Which part of making the liner consists of needing a 30-degree cut? I have some pfte tube for 3mm, seemed like good due course to get some. It i can easily hand-drill the inside out to 4mm and then the smaller pfte tubeby Jasper1984 - Reprappers
How are you going to put it together, are you going to print it? If so dont see anything missing, but not sure if i would!by Jasper1984 - Reprappers
How is the pfte tube held in place? In this thread(Note: dont just blindly try the things that i tried, might well be bad ideas) people mention the set-screw isnt actually meant for holding the pfte tube, just a space filler. Cannot fathon why have a internal thread there in the first place and not wrap tape around it until the space is filled.. (Or just have less room for the tube)by Jasper1984 - Reprappers