QuoteMechaBitsI had a part the other day I thought might be better if I printed it at 45 degrees on standard cartesian, ie rotate the model in Z, I would have done it if I had some Printbite or something, still wanted to do it to see if I could manage it as bed is sticking quite well at the moment, so wouldnt have needed special slicing software.I've actually run into that situation quite a few tby Feign - Mechanics
QuoteDustIts not a new idea... and still suffers from same issues as last time.. No way to get accurate positional information easily.Not exactly, other rolling 3D printers would travel large distances on each layer, and would be rolling over the lower layers of their own printing if printing something larger than the printer's own wheel base. This concept would only step the wheels 1/3rd of aby Feign - Mechanics
I was thinking bars so they could be separated from the print one bar at a time to reduce the stress on the print from peeling them off. Here's a completely different idea: Turn the whole thing around, so the printer is on wheels and slowly rolls along a flat floor, printing a trail of parts behind it.by Feign - Mechanics
I just thought of something interesting: What if instead of using a seamless conveyor belt made out of premium materials, the printer feeds in a series of flat aluminum or plastic "build bars" that press tightly against each other as they feed through the machine to act as one large build plate?by Feign - Mechanics
This is commonly known as an "Ultimaker Style" Cartesian. Named for the company that first commercialized it. The general concept is open source, and pretty solid, but people want to be unique and make something new rather than use what's been proven to work. For what it's worth, CoreXY has advantages over Ultimaker, but is indeed more complicated. The Tantilus is the most well-developed Reprapby Feign - Mechanics
QuoteOrigamibI find it convenient that printrbot just released their version during blackbelts Kickstarter campaign. I believe the research shows in the Blackbelt design though, they have some pretty impressive results. I don't think it's a coincidence at all, but not due to any kind of copying. Here's how I think the timeline went (speculation ahead). -Bill Steele (of Polar3D) had his conveyorby Feign - Mechanics
QuoteOrigamibI'm very surprised they havn't had backlash from the community for blatantly ripping off Blackbelt, but people seem happy just because it's a lower price.You should do some research before saying things like this. Polar 3D had working prototypes of this back in early 2016 at trade shows.by Feign - Mechanics
I could see having a "fail-safe mode" where the head moves to what it expects to be home at the end of a layer (maybe every tenth layer or something) to check and see if the home sensors trigger when expected. If they trigger much too early, or don't trigger at all, then it stops the print and alerts the user with a text message or something. Not to rely on the home sensor for layer alignment, bby Feign - General
Rather than putting the mechanism under the entire table, you could probably put it inside the air chamber, then the only material the magnetic field has to cross is the thin porous top surface. You would have to disassemble the whole table, but there are ways to implement it where you don't have to drill even a single hole.by Feign - Mechanics
Quoteav8r1I'm back to the familiar conclusion that if I'm going to get somewhere, I'm going to have to go outside, dig a hole, mine some germanium, make my own transistors, re-invent digital computing from scratch, and write my own software just to make sure the failure of humanity doesn't creep in.Arrogance is such a terribly heavy burden. Quoteav8r1I mean seriously folks, has anyone gotten onby Feign - 3D Scanners, Book Scanners, and Optics
No, I work for a different 3D printing company entirely (one that has actually delivered all of our KS backed printers as of last year, in fact, but that's neither here nor there). I'm simply sympathetic to Rylan's plight because I've been in pretty much exactly his position before (hence why I'm not in any position to hire people currently.) But like I said, you're not obligated to agree withby Feign - General
Rylan put out another update that details out among other things, where the other half of the Peachy money was spent. Mostly R&D, since they fought so hard to get the analog audio-driven portion of the project to work, failed, and then went to the digitally driven solution. That alone easily ate up the grant money. I know it's frankly my opinion and nobody is obligated to share it, but I bby Feign - General
I was one of the lucky ones that got the last wave of beta-tester Peachys. Hardware-wise, it was IMO completely ready for prime time, it assembled easily and it works reliably (though I never got the quality to be all that great). The software is pretty mediocre, and the one thing I was really looking forward to was it getting another much needed update, which now it likely never will. The Peaby Feign - General
Quotethe_digital_dentistConsumers pay $1000 for mundane appliances like dish washers.In the current economy, they decidedly aren't. The only reason people are paying over $300 for appliances is because they've grown up with them and are 100% in-touch with the utility of them. Almost all of the appliances we consider mundane were in the consumer arena for at least a generation before they were cby Feign - General
It looks to me like the table isn't supposed to tilt at all, the hinged legs are all on one pully as a three legged Sarrus Linkage to keep the table straight through the z-axis. It's closer to RepRap Morgan than it is to a Delta. I kind of like it, there are no precision rods or screws needed, though the travel through the z-axis will need some calibration.by Feign - Developers
I think I see where the idea is going, the reason the plate is oddly coupled to the bed. He's relying on the z-carriage to stay in position via friction with the threaded rod while the bed goes through its printing movements, presumably uncoupled from the rod. Theoretically, it gets rid of the non-planar layer and anistropy problems, though it causes the printer to be locked into a layer heightby Feign - Polar Machines, SCARA, Robot Arms
QuotezerodameaonI can't tell if you are being sarcastic but in case you are not,there are already many working examples of filament width sensors.Oh, wow, okay. I really wasn't aware of any of them. Any chance you could toss me an example?by Feign - Developers
QuoteRevarBat Moving either the X or Y motion up onto the gantry would be problematic for introducing a lot of wobble into the printing process, as plastic isn't as rigid as metal rods. I have been looking at ways to use string to remove one of the Z motors, though.On the other hand, having the bed move with CoreXY kinematics would be highly useful, as the XY rigidity is built right in to the kinby Feign - Developers
Have you considered running the pellet extruder in a fixed location and simply feed the fresh filament that it makes to a more traditional print head on the arm?by Feign - Let's design something! (I've got an idea ...)
Automatic filament thickness measurement, to change the extrusion rate dynamically to account for the exact actual cross section of the filament. Torque sensors on the extruder motor to dynamically adjust the temperature for optimum flow pressure. I'm pretty sure nobody else is even touching those two features.by Feign - Developers
Well, the Dentist got everything right about why the setup doesn't work for 3D printers, but the reason it is used for CNC routing is that the tool on the router must maneuver around features of the object it is working on that can be up to the full build height. Therefore, a CNC must pursue a minimum "tool footprint" even at a sacrifice of stability. But the pictured machine is neither one, itby Feign - Mechanics
At work we use SainSmart ABS almost exclusively with consistently good results. We have had pretty good luck also with eSun and SainSmart PLA. At home, I've had pretty good luck with the Dremel branded PLA (though it was a gift, I don't know if it was a good value). At both I've got a small pile of samples that I've gotten from GlobalFSD. I love exotic materials, but can never think of a use foby Feign - General
QuoteEzrecOf interest, is that the polymer chains should go across the hinge, not parallel to it. This implies that, unless they are laser-cutting this at a 45 degree angle to the orientation of the polymer chains, either the horizontal or the vertical hinges are going to fail prematurely How do you propose they know what orientation the polymers are facing, or if they are homogeneously orientedby Feign - General
I would also be concerned when seeing the same material used for both living hinges and rigid members. Nevermind that, where do you get this Hylite composite? The stuff looks absolutely brilliant. Between these living-hinge arms and the unibody extrusion of Tiko's delta printer, we could have delta printers as happy meal toys by the next generation. EDIT: I found a place that sells Hylite (mby Feign - General
Sorry to resurrect a 6-month old thread, but it looks like Mr. Rudenko has been hard at work. It looks like he got his first customer for a full-sized printed house. And by house, I mean hotel.by Feign - General
QuoteTraumflugWell, maybe I should put a price tag on Teacup firmware, too. Just to satisfy those who view the quality of software (or hardware) by their cost. Call it "Teacup Firmware Enterprise Package" and you could get away with prices the likes of which would astound you. For instance: QuotekengineerI come from manufacturing, the people I work for drop $15,000.00 or $20,000.00 per seat forby Feign - General
Quotejessicabrenner I'll give the measuring of the tube OD a try. But I don't think thats the problem since the tube is relatively stiff and I'd expect it to relax quickly (rather than over several seconds) once the pressure is removed, but ya never know. In a separate test, I'll put the peanut butter in a closed syringe (with no air bubbles) and apply very high pressure, and see if the peanut buby Feign - General
Quoteo_lampe The Palette would waste a lot of filament between color changes. The hole string between the Palette box and the hotend would have to be dumped.From a cursory look at their videos of the machine in action, I can tell you that's not how it works at all. It appears that the Pallette takes in the g-code, starts queuing up the filament bits and sending them in one constant fused strand tby Feign - Developers
QuotecozmicraySo how does this design overcome the problems surfaced in WALLY design?Wally's problem was that is had a fixed stepper actuating a moving pully, which caused exact positioning of the arms to be a literally moving target. The problems with the Wally arms were fixed with the GUS arms, but by that point, the Simpson platform was more interesting to develop. All of that aside, this guyby Feign - Polar Machines, SCARA, Robot Arms
I've never seen it done on a 3D printer before, but I have once seen someone simply wire two steppers in parallel to one controller and it appeared to work as expected, with both steppers moving synchronized with each other. It was a very temporary kind of build though and I don't know if there are negative consequences to such a shortcut.by Feign - Let's design something! (I've got an idea ...)