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Shai-Hulud posted:loving Linux... i tried to install the Bed level visualizer plugin for Octoprint and it needs to install something called numpy and it can't get it loving installed and it dumps pages and pages of text back at me when it fails. Usually i just google some part of the error string and copy the solution some linux wizard came up with but with this I don't even know which part of that text dump to google! apt-get install numpy maybe? apt-cache search numpy to find the pkg
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Nov 22, 2018 20:39
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Looks like either the cable attachment for the throttle body butterfly or an aircon fan speed piece.
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Nov 22, 2018 20:40
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Yeah it's part of the throttle that holds one of the cables, but it's the cable for the cruise control, not the main accelerator. There's actual replacements online for those. The one for the accelerator is metal but the cruise control thing was plastic. It's from a '95 honda accord and he couldn't find anything that wasn't a pull of an old part. He figured even a used part that's 23 years old may begin to crumble and we were able to beef up the replacement part a lot. Here's the prototype in PLA, I fixed one area that had too deep of an extrusion cut where there's a spring perch and added some fillets to the potential "final" model. We changed the center dimensions because we had to cut out the original pin that held it in and are replacing it with an M8 bolt that my friend gets to shop for on black friday.  edit: it's the top piece of the assembly seen on this ebay auction: https://www.ebay.com/itm/94-95-1994...TgAAOSwBt5ZLgcT Rexxed fucked around with this message at 21:02 on Nov 22, 2018 |
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Nov 22, 2018 20:59
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Father O'Blivion posted:Is this still a thing or did the design fall through? I'd like to produce some prototypes, even in PLA. Thanks for the modeling and everyone giving input. Right, so some revisions need to be made. The support structure spacing needs to be tighter and the spiral needs to be higher. I'll dig into it again once the Turkey hangover has passed. 
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Nov 22, 2018 21:12
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Throttle body cable pulley? edit: oops didn't see the last few posts peepsalot fucked around with this message at 22:12 on Nov 22, 2018 |
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Nov 22, 2018 22:09
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Rexxed posted:Yeah it's part of the throttle that holds one of the cables, but it's the cable for the cruise control, not the main accelerator. There's actual replacements online for those. The one for the accelerator is metal but the cruise control thing was plastic. It's from a '95 honda accord and he couldn't find anything that wasn't a pull of an old part. He figured even a used part that's 23 years old may begin to crumble and we were able to beef up the replacement part a lot. Do it in nylon. I've got printed nylon pieces on my motorcycles and on my car that have stood up admirably over years of exposure. One of my students 3D printed a new nylon door handle for his truck that also has been going for at least a year with no signs of damage despite the huge leverage that part experiences on a regular basis. Nylon is love, nylon is life
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Nov 22, 2018 22:10
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Throttle body xenomorph head thing.
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Nov 22, 2018 22:12
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Rexxed posted:Throttle body xenomorph head thing. Mods, name change please
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Nov 22, 2018 23:45
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mewse posted:apt-get install numpy maybe?
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Nov 23, 2018 06:35
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Combat Pretzel posted:numpy is some math poo poo for Python. Probably more likely "pip install numpy". pip probably has it but debian has packages for it https://packages.debian.org/stretch/python-numpy or https://packages.debian.org/stretch/python3-numpy
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Nov 23, 2018 06:50
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Rexxed posted:Here's the prototype in PLA, I fixed one area that had too deep of an extrusion cut where there's a spring perch and added some fillets to the potential "final" model. We changed the center dimensions because we had to cut out the original pin that held it in and are replacing it with an M8 bolt that my friend gets to shop for on black friday. Sagebrush posted:Do it in nylon. Another possibility, and imo easier to print, a rigid TPU filament like Ninjaflex Armadillo is another great option. I've printed cat toys, buffer components for target pistols and dive accessories for commercial scuba divers. If it can take a year in the tropical sun and sea at depth it will probably outlive you. Prints on PEI, normal temperatures and no bad smells. I can even print it on my spare Fabrikator V2. Edit: it's also naturally resistant to stuff like brake fluid and other tricky solvents, so good in automotive applications.
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Nov 23, 2018 16:26
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I'm using nylon because I already have it and he needs to leave in a day or so. I'm using the Taulman Alloy 910 and their guide for printing it but my first try the model got about 1/3 done and the extruder gear somehow wore a flat spot on some of the nylon filament and stopped feeding it. I'm hoping that was a one-off problem perhaps due to me messing with the spool to keep the net wrap on. edit: after a cold pull and then disassembling the thing to make sure the filament path was clear and cleaning the teeth on the extruder gear it's printing again. I don't know what the issue was but I could not feed nylon into the hot end for some reason. Having it follow a piece of PLA in once everything was working again may have helped. Rexxed fucked around with this message at 20:16 on Nov 23, 2018 |
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Nov 23, 2018 18:09
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Good candidate to be cast in metal using PLA.
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Nov 23, 2018 22:19
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ReelBigLizard posted:Another possibility, and imo easier to print, a rigid TPU filament like Ninjaflex Armadillo is another great option. I've printed cat toys, buffer components for target pistols and dive accessories for commercial scuba divers. If it can take a year in the tropical sun and sea at depth it will probably outlive you. Prints on PEI, normal temperatures and no bad smells. I can even print it on my spare Fabrikator V2. Taulman Alloy910 is very easy to print, has very little warping and can be printed on a cold bed if needed.
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Nov 23, 2018 22:55
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ImplicitAssembler posted:Taulman Alloy910 is very easy to print, has very little warping and can be printed on a cold bed if needed. My roll seems to have width variation enough to jam. I was unable to hand feed it into the hotend until I felt for a thinner part up the filament and cut it back and fed that through. Very frustrating for the price.
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Nov 24, 2018 00:12
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I'm looking at getting a Prusa MK3 and taking advantage of the free postage this weekend, but importing items worth more than $1000 AUD into Australia gets hit with an import levy. Annoyingly the current price after conversion is just over $1000 AUD, so I was wondering if anyone here might have a discount voucher for the Prusa shop like the one for doing the survey earlier in the year that they would be willing to sell? Alternatively, the MK2.5 will come in under $1000, am I missing out on much going with that instead of the MK3?
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Nov 24, 2018 01:27
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General Apathy posted:I'm looking at getting a Prusa MK3 and taking advantage of the free postage this weekend, but importing items worth more than $1000 AUD into Australia gets hit with an import levy. I have a $20 survey voucher. I'm not entirely sure if it's transferable, because it's listed in my store account, but there is a code...
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Nov 24, 2018 03:31
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General Apathy posted:I'm looking at getting a Prusa MK3 and taking advantage of the free postage this weekend, but importing items worth more than $1000 AUD into Australia gets hit with an import levy. I own a 2 and have used a 3 and for the price difference I'd get the 2 again in a heartbeat. The biggest every day benefit the 3 brought in was the spring-steel bed which is on the 2.5 anyway.
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Nov 24, 2018 04:32
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Thanks BMan, I didn't think about it maybe being tied to accounts. Megabound posted:I own a 2 and have used a 3 and for the price difference I'd get the 2 again in a heartbeat. The biggest every day benefit the 3 brought in was the spring-steel bed which is on the 2.5 anyway.
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Nov 24, 2018 06:36
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I emailed taulman about my filament being out of tolerance and Tom emailed me back very quickly asking me for my address. He said it doesn't happen often but it can be a problem near the end of a batch. Some of the fatter parts of the filament were over 2mm hence all the jamming.
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Nov 24, 2018 07:43
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Rexxed posted:I emailed taulman about my filament being out of tolerance and Tom emailed me back very quickly asking me for my address. He said it doesn't happen often but it can be a problem near the end of a batch. Some of the fatter parts of the filament were over 2mm hence all the jamming. Sounds like following up was the right thing to do, good work!
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Nov 24, 2018 08:08
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Wheres the cheapest place to get a legit e3d v6 hotend this weekend? edit: ughhhh i went and got the trianglelabs one. worst case I replace the heatbreak. moron izzard fucked around with this message at 22:33 on Nov 26, 2018 |
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Nov 24, 2018 16:03
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Does it really have to be "legit"? AFAIK the design is open source, and TriangleLabs over on AliExpress makes pretty decent stuff by all accounts I've heard so far. They even sell titanium heatbreaks. You just have to wait a little longer. --edit: Maybe there's a reseller with that stuff in your vicinity. Combat Pretzel fucked around with this message at 16:27 on Nov 24, 2018 |
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Nov 24, 2018 16:25
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Combat Pretzel posted:Does it really have to be "legit"? AFAIK the design is open source, and TriangleLabs over on AliExpress makes pretty decent stuff by all accounts I've heard so far. They even sell titanium heatbreaks. You just have to wait a little longer. Yes, the difference in quality is noticeable a d you are getting assured to spec
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Nov 25, 2018 01:27
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Yooper posted:Right, so some revisions need to be made. The support structure spacing needs to be tighter and the spiral needs to be higher. I'll dig into it again once the Turkey hangover has passed. Wow, this looks badass. I imagined this would be pushing the limits of what was possible with current tech but that its definitely looking like a real thing 
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Nov 25, 2018 06:16
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OctoPrint has a MQTT plugin!  Now I can introduce another safety via a smart plug, i.e. if the thermal fuse doesn't cut or the RPi stops responding, the home automation will cut power instead. Jestery posted:Yes, the difference in quality is noticeable a d you are getting assured to spec
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Nov 25, 2018 16:06
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So I got an email on Friday from 3DKitbash, makers of nifty 3D models. They were celebrating having successfully patented a pin system for connecting parts together. The patent is here: http://tinyurl.com/yb9dz6v3 How is this any different from, say, the pins you get from MeshMixer? It feels like there's nothing new, and it's another of those "Something existing, BUT WITH A COMPUTER" patents. 
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Nov 25, 2018 18:57
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TwystNeko posted:"Wooden dowels, BUT WITH 3D PRINTING"
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Nov 25, 2018 19:02
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This is the entire invention. Amazing
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Nov 25, 2018 19:19
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definitely no prior art for that
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Nov 25, 2018 19:50
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The issue is more all the time and money wasted from the litigations that will ensue from this.
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Nov 25, 2018 20:04
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I could have invented that. But I'm not a monster
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Nov 25, 2018 20:24
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BMan posted:This is the entire invention. Amazing Makerbot's published 3d models (the skull comes to mind) uses that connector more or less exactly, now someone patented it 
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Nov 25, 2018 20:40
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It's not even a good connection. It maintains only 3 or 4 points of sliding contact, so it can't actually maintain a fixed position along the axis of installation. And that's another problem. You could use multiple connections like that, but only so long as they're parallel, because it snaps together along this single axis. So, it can't reliably maintain a position along the axis of installation, and to maintain position elsewhere, you'd have to be really conscious about your use of the Law of Elastic Averaging -- you can use a dozen of these, but there's no escaping that the pieces are held by flexing 'springs' of plastic under load. I'll use this post to plug an alternative way to fix two solid bodies together, it's called "mechanical glue". Definitely not under patent, pictured here to secure the space shuttle to its carrier aircraft:  So you see those 3 V's juttin off the tops? There are 6 bars total, the plane gets 6 independent connections, and the shuttle is fixed in 3 places, at the tip of each V. Without going too much into it, this is a theoretically "perfect" connection, and is scale-invariant. So it will be perfect at space shuttle scale, the scale of things you print, and the scale of nanotech. And you can take it apart, put it back together, and it will go back to its original position perfectly every time. As long as the rods can handle the load, it will just not move. Mofabio fucked around with this message at 04:30 on Nov 26, 2018 |
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Nov 26, 2018 04:25
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the technical term for the mechanical system you are referring to is a https://en.wikipedia.org/wiki/Kinematic_coupling you can 3D-print one yourself pretty easily (I recommend the Maxwell design) and try it out. it's neat. I know that a few printers also use the system for a removable bed mount that can be replaced instantly to exactly the same location.
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Nov 26, 2018 04:37
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Ha, did you see the recent hackaday post, about the thermal expansion compensating bed by that dentist reprap guy? Wondering how small our world is. I love exact constraint  Any coupling with 6 (and only 6) independent constraints will have crazy repeatability, like nanometers. Mechanical glue's a good coupling, esp for joining oddball bodies, cuz it just needs tapped holes, or nut traps. The Maxwell 2-2-2's such a workhorse b/c it can handle temperature swings really well, and keep its repeatability. If the 3 V's of mechanical glue are symmetrical, like the 2-2-2, the family resemblance becomes clear. edit: found a pic of it, sweet:  the artist adds that unlike regular glue, mechanical glue has infinite 'pot' life, cures instantly after the bolts are tightened, and if the two pieces are jigged in position, you can take it apart, clean it, lick it, whatever, and re-jig it back to its original position to the same crazy accuracy. I'll add, less I come across as a real snob about couplings, those forked tongue things are fine, they're just not gonna mention in their unenforceable patent about how it's no good for precision work. A coupling for every season Mofabio fucked around with this message at 05:14 on Nov 26, 2018 |
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Nov 26, 2018 04:49
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I do remember reading something about an rear end in a top hat dentist 3D printer guy but honestly I don't remember if it was in these forums, or hack-a-day, or a different 3D printer forum. I did see the printed kinematic coupler on H-a-D a week ago or whatever but I usually avoid reading the comments there because they are so bad. Small world though yeah lol And I've seen maxwell couplings in a few places but most notably on the MarkForged printers.
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Nov 26, 2018 04:58
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Sagebrush posted:I do remember reading something about an rear end in a top hat dentist 3D printer guy but honestly I don't remember if it was in these forums, or hack-a-day, or a different 3D printer forum. It was here and it was probably me. His ideas are pretty good but his forums posts on RepRap are so awful.
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Nov 26, 2018 05:17
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PlaneGuy posted:It was here and it was probably me. His ideas are pretty good but his forums posts on RepRap are so awful. He's so insecure! He's either fronting or challenging people. Real spirit of competition, rather than a spirit of brotherhood, and shared wisdom. He also needs to brace his giant aluminum printer's sides with diagonals, cuz that big, with a moving mass on the top coreXY system, he's getting parallelogram errors. I checked his stuff out after he yelled at me over there. Kind of a piece of work but whatever, there's a few in every space.
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Nov 26, 2018 05:32
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Combat Pretzel posted:OctoPrint has a MQTT plugin! Does the MQTT keep a heartbeat signal then? I'd think if RPi freezes, it wouldn't be able to send the power off signal, let alone check for thermal run away. Of course I've also had one of those Wifi sockets fail closed on me. On those kinematic blocks, E3D is using that for their head/tooling change standard they're pushing.
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Nov 26, 2018 19:32
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