@foamstone, I run a company (fusion3design.com) that designs and manufacturers 3D printers similar to what you're designing. Namely corexy drive system, large build volume, high print speeds, and bowden extruder system. Our swept volume is 306x306x306mm, which is a magnitude smaller than what you're attempting. I have a couple of comments based on my experience that may be helpful. First, ourby crispy1 - Developers
@davew, speaking from my own experience developing (and selling) a cable drive corexy machine, what I see in your last picture isn't positioning error due to pulley eccentricity. I think you don't have enough grip on the cable and it's slipping. I saw exactly the same thing until I went to a wrap pattern that can't slip (wrapped through the middle of the pulley). And I too thought I had sufficby crispy1 - General
PLA absorbs less water moisture than ABS, which absorbs less than Nylon. In my experience you can leave PLA exposed to air without issues. Leaving ABS out for weeks may cause hissing, steam, and bubbles, but it's usually printable. Leaving nylon out for any length of time is a recipe for disaster. I would not recommend cleaning any filament with water. Construct a filament wiper out of a smaby crispy1 - General
Quotegmh39 Could this be used for motion as well? My idea is to use a few of these to remotely drive a ballscrew in a large format printer. Any reason why that wouldn't work. It would be slow as shit. You may have issues with lash from the flexible cable (E axis is less sensitive to this than motion control systems), and lash will be made worse as the load increases because the necessary torqby crispy1 - General
QuoteNot to divert the topic too much, but I have always been a huge supporter of UltiMachine filament, never had problems with their filament, it's always quality. I believe they manufacture it in-house (i.e. it's actually their filament). This is incorrect AFAIK. They resell filament made in the US from a reputable supplier. I won't name names since it's not my supply chain. That said, I oby crispy1 - General
Stratasys' Fortus 900 (and maybe others) can print Ultem, which has a Tg of 216C (compared to 100 for ABS). So as far as high temperature performance I'd say that's the winner.by crispy1 - General
Hey Mutley, could we get a quick update on where you are with shipping the original beta kits out?by crispy1 - General
Quotethejollygrimreaper i found it in the marlin code specifically line 1731 in the Marlin_main.cpp i think there are probably a few functions in the marlin firmware that aren't listed in the wiki , it would probably be best to use as a moreup to date reference for available gcodes Updated the firmware, and the M32 command works! Thanks so much for your help!by crispy1 - General
Quotethejollygrimreaper there's another m code which combines to two M32 that one might be worth a try , otherwise some modifications might be in order I can't find that one documented on the gcode page ( ), do you have a link to documentation?by crispy1 - General
QuoteBummer. Did you ever hear back from Evdz? Any indications it'll get fixed? Is Evdz Matt Roberts? The only reference I've been able to find on the extruder advance is this: He helped me experiment with different parameters. But he wasn't the one who wrote the code so he didn't know how it was supposed to work, or how to debug it. The guy who wrote it seems like he just dumped it into Marliby crispy1 - General
Yeah I played with it last year, even went so far as to bug Evdz about it. I concluded it was more or less completely broken and did not work. I was using a bowden setup, 1.75mm filament. While it did alter the extrusion amount, it did not do so in a way that improved final output quality. Sailfish firmware has a similar feature called JKN Advance which does work as intended (http://www.makerby crispy1 - General
No, it does not work with the second file in play. What's weird is it works when sent from the terminal. Let's say file A is the one that runs the test I want to run, and file B is the one that opens file A. So at the end of file A I have M23 fileB.gcode / M24, and the whole contents of file B are: M23 filea.gcode M24 So if I run file B directly, when it gets to the end it says something liby crispy1 - General
I can't get M24 to work inside a .gcode file on the SD card. M23 correctly selects the file, but the M24 command is never executed. If I send M24 over USB from my computer it starts fine. If I send M27 it says it's sitting at the beginning of the file (byte 0/7823). I also discovered that a gcode file can't open itself, so I created a second gcode file whose sole purpose is to re-open the firby crispy1 - General
Marlin, but it's about a year old at this point.by crispy1 - General
Is anyone currently using the M41 command? This is supposed to make the printer repeat the same gcode file over and over when running from SD. But I can't get it to work, the machine just stops at the end of the file like normal. I connected a computer to it to see if it would throw any errors in the terminal and it doesn't. What gives?by crispy1 - General
In a list of printers to mimic, a leapfrog would not be on mine. Their design has numerous fundamental flaws the result in poor performance and reliability.by crispy1 - Developers
QuoteWhen I brought it back up to 300C to torque it down again, I also noticed that the cartridge heater was floating loose! (I let it cool down without adjusting, and the set screw held it again at room temperature.) The set screw holding it in was originally torqued cold, and I think that E3D might want to change the instructions to torque that hot as well. I don't think that a lot of torque shby crispy1 - General
@vreihen I would guess that you did not properly seat the nozzle against the heat break inside the heat block. There must be a gap between the flat on the nozzle and the bottom face of the heat block. See step 2 of this pdf:by crispy1 - General
14 hour drive for me and I'm going. The lot of you have no excuse! EDIT I want to say, the event last year was by far the most fun I've had at any kind of maker faire/hackerspace type thing. Great atmosphere, great people. Loads more fun than Maker Faires.by crispy1 - General
QuoteAre people interested in teeny-tiny nozzles? I'm interested in a 0.5 orifice. I know you offer a 0.6 but I think that is a little too big for most applications. 0.5 seems to be the sweet spot.by crispy1 - General
QuoteIts nice but expensive and also does not offer the large print volume I am looking for. You didn't specify exactly what volume you needed, so I thought it was worth suggesting. Sorry to hear it won't work for you. What sort of projects do you have in mind that require that volume?by crispy1 - General
(apologies for the somewhat-blatant advertising) You may also want to consider a printer I have been developing:by crispy1 - General
I recently started using it. It's a significant step up from other slicers IMO. It doesn't have any weird behavior, doesn't have any huge show-stopping bugs, and doesn't do dumb stuff when it generates the tool paths. Additionally, the devs are very active in adding new features and improvements that the user base requests. This is worth a lot IMO. It also has some nice features that other sby crispy1 - General
@phyllis_ave I'd say this is worth filing a bug report on github. You've figured out what is causing the problem, which is a big step. Eating up data is a serious concern for other people who want to use octoprint on mobile devices.by crispy1 - General
QuoteI'm kind of afraid of becoming the mad hater at this point. This mis-statement is hilarious in light of your history on this forum. Staying on topic... You can get lead-free brass alloys, but they will probably cost more and be more difficult to machine. Here is one example: I think unless you're creating fine airborne particles you're probably ok. From what I have been able to tellby crispy1 - General
QuoteSeems like the internals of the E4 are the same as the E8 and a firmware hack can unlock the full resolution of 320x240 That's for the brand-name FLIR cameras. You're assuming that these clones are using the same IR sensor and cripple their hardware the same way. I don't think these are good assumptions.by crispy1 - General
I'm in the same boat as you - always wanted one but couldn't justify the cost. It looks like they are using low-resolution IR sensors, if you read the specs it is 640x480 normal spectrum video with 60x80 IR overlaid on it. So resolution is not comparable with a "real" FLIR camera. I think I'll pass.by crispy1 - General
@ MrMaint With 6 extruders I think you'd have little choice but to use a bowden arrangement and mount the extruder motors and drive/hobb gears remotely. Packing 6 stepper motors (even small ones) onto a print head would very undesirable from a weight and size perspective. @ Sanjay Very impressive, as usual. Keep up the good work!by crispy1 - General
@ iquizzle Or C) They recognize that KS is an extremely cost-effective way to get media buzz, eyeballs on your product, and early traction. While I agree this is not strictly within the rules of KS, from a backer risk perspective it's certainly appealing vs a completely speculative project.by crispy1 - General
Quote is printing better then any other hotend on the market right now, lol If you have to use that much z hop to get good prints, you are doing it wrong.by crispy1 - General