This is cool, especially interested in the 'riveting' of layers. Any idea as to how that would work? One thing concerns me, though. The 'land' at the bottom of the nozzle is a small flat area surrounding the nozzle orifice. This land is critical in forming the top surface of printed layers. If you print on a curved surface then you cannot take advantage of this. Your parts will come out with noby destroyer2012 - General
I would like to turn the extruder on my printer into a linear actuator. Is it possible to add an endstop to the E axis so it can be homed and moved around the same as x, y, and z? I am not averse to heavily modifying the firmware to do so.by destroyer2012 - Firmware - mainstream and related support
QuoteN314 Professional FDM machines (Stratsys/3D systems) use 1.75, so i figure they probably have pretty good reasons for doing so... Just for the record that is a terrible reason to do anything. Companies don't actively try to make their machine work better. Their only motivation is to design something so they can make more money. Maybe in some cases a better machine equals making more money,by destroyer2012 - General
How can you do both filament diameters in the same hot end? if I put even a slightly smaller diameter (2.75 vs 3) filament in my extruder the molten plastic will flow back up the relatively empty channel and create a block. It extrudes great for the first minute then stops completely. Whereas applying 3mm to a 1.75mm hot end would create way too much back pressure...by destroyer2012 - General
The bowden hot end oozes a lot more than a direct drive. This is a function of the inherent springiness of the system. When you advance the extruder gear what happens is you are putting tension into your bowden cable. What you are describing as the 'afterglow' is the release of this extra tension applied to the cable. It acts as a spring which continues to push filament through after you finish tby destroyer2012 - General
Teflon still has the problem of creep. Especially for ABS temperatures, teflon will slowly widen and create leaky holes at the junction between cold and hot. This will result in plastic leakage around your hot end. Even in the J head design, the teflon liner can still get squished over time and create a gap between the liner and the nozzle taper. This in turn will cause your hot end to become leby destroyer2012 - General
Quoteiquizzle KS is blatantly allowing non-innovative projects to be funded so that they can get profit. Whose job is it to make sure the projects are innovative? Isn't that what the backers are supposed to do? Besides, even if a backer funded a totally derivative product then what's the difference? The backer got what he wanted, the people making the derivative product got what they wanted. Tby destroyer2012 - General
QuoteSenake Market information is currently not free - and that is one of the main reasons that the pace of innovation is slowed down. My point is you need to exert effort to get this information. Your idea is like saying, let's just all fly! It's a great idea but cannot work. You need some device to make you fly, just as you need someone to work hard to get this "market information". QuoteKallby destroyer2012 - General
QuoteSenake Ideally, we consumers would need to make market information - their everyday needs, wants and importantly problems available FREE to as large an audience as possible. "Market information" is not free and lots of people make it their career to produce and collate this information. There are whole fields of research devoted to figuring out what people need. Even huge companies like Miby destroyer2012 - General
Instead of a cutoff wheel you can use a small-diameter grinder attachment. This way you don't apply as much force in the "spin" direction of the bearing.I used one that was only slightly bigger than the groove I wanted to make. Just tilt it a bit and you still get the bearing to turn but it turns rather slowly.by destroyer2012 - General
Also, if you have a z-probe you don't need servos. Just move the head over on top of the motor and turn the motor until it trips. You can get away with some pretty simple motors if you do that, I think.by destroyer2012 - General
The orientation I provide is correct. I've tried your software now and I gotta say I don't understand this trend to interpret minecraft as a 3d design tool. Minecraft is a game where building stuff is supposed to be addictive, not fun or fast or precise. In other words, building things from a first person perspective, placing block by block is designed to be time consuming and laborious. Sure,by destroyer2012 - General
I think this is a great idea I don't think you even need continuous rotation servos, I mean how far out of alignment does your bed get? Mine never needs more than like a quarter turn of the screws. Also, you don't need any servos for the z-probeby destroyer2012 - General
Here is a question for other E3D users: Has anyone had good success using this hot end inside of a heated chamber? I have an ultimaker where I sealed up all the sides so it gets pretty warm inside. While printing, I am forced to print with the sides open for the first few layers because the hot end gets too hot and filament starts jamming if the sides are closed. I have heard people TALK aboutby destroyer2012 - General
Here is an example of the kinds of objects I print: If you can reproduce that with your software I would be quite impressed. This object is an example of why a lot of people would want 3d printers, and something your software cannot accomplish (please prove me wrong ). What I have done is obtained a 3d model of a protein structure, then slightly modified it (union and difference with the 'pegby destroyer2012 - General
I think your software is an interesting idea but not something I would personally use. While it may be true that most printers cannot make an extruded path less than about 0.4 mm, the positioning they can achieve is much finer than that, and using normal "boundary representations" works out great. Often times I need to make a bracket or some other fixture that will fit onto something else; this pby destroyer2012 - General
I would also suggest putting a Z max endstop and homing to max Z. In marlin it is just a simple flag on the config page. Then, all you have to do is adjust the amount the axis moves back down (to zero) to set your start z height. Also be advised that the hot end and bed will expand a bit when heated, so i find it's best to set the z with the printer heated to operating temperatures. Just use yoby destroyer2012 - General
Chelsea - QU-BD Wrote: ------------------------------------------------------- > Sorry I wasn't a bit more clear, the extruder is > mounted in the video, its just an all new design > that is unlike anything currently on the market. In what way is it unlike anything? Seems pretty much like every other extruder anyone's got right now. The only potential innovation is the claim at "all meby destroyer2012 - General
Kind of looks like something came off the bed there N314.. Are you using a raft with your support? I always do that. Make sure your extrusion width to layer height ratio is at least 2 or 3 for good adhesion. Try that then think about reducing the flow rate for the support, would be my advice there.. I always use dense support. A slower speed might help too, sometimes the extrudate gets stretcheby destroyer2012 - General
I wrote an external python script to decrease the flow rate during support moves. The developer is in the process of releasing a new version but after that he has promised me to include a support extrusion width slider. Thinner support is essential if you want to use support with PLA, as it tends to get really hard during the interface layer. I have had several prints develop holes and other junby destroyer2012 - General
An added question to this: I have noticed that some hot ends put a chamfer on the exit hole of the nozzle. I understand this is probably how they drill the hole, but don't you guys think that is a bad idea/defeats the purpose of a small exit hole? Makergear hot ends have this, and on the Ultimaker website it looks like their new hot ends have this too (but not the old ones! I have two and they'rby destroyer2012 - General
I will second that KISSlicer generates the best support. Reduce the flow rate to 70-75% to make it weaker and easier to remove. Support works better with ABS than PLA. Here is a supported print I did using KISSlicer, support set to "dense", spacing to .5mm and flow rate reduced to 70%:by destroyer2012 - General
There is a dearth of information about polypropylene printing on the wiki/here. Has anyone else tried it? I have just tried it, it extrudes nicely at 230C, but I can't get it to stick to anything! Any suggestions from those that have got it to work? Here's where I got my filamentby destroyer2012 - Polymer Working Group
Speaking as a soon-to-be biochemistry grad student, how hard would it be to engineer an enzyme to polymerize lactic acid in vivo? Check this outby destroyer2012 - Polymer Working Group
I recently got some of that red trimmer line from galaxyman7's sig and I must say it definitely extrudes quite well! But it is warping like crazy. I have printed onto blue tape and hairspray-coated kapton and it seems the first layers stick fine but then it just starts peeling after second or third layer. Has anyone tried printing with a higher bed temperature? It seems to me the way to cut downby destroyer2012 - General
KISSlicer is a great software, I am using the free version to excellent effect and I also use the support feature, with the flow rate scaled to 70%. When you scale down the flow rate it makes the support much easier to remove but the support is still solid enough to actually work. I would recommend everyone try it. @tmorris9 See if its outputting for the right firmware (on the gcode tab) and thatby destroyer2012 - General
I've been using KISSlicer to slice prints and that's working really well. Smart acceleration and great support material generation too, you should try it.by destroyer2012 - General
I have used KISSlicer's support to great effect. Here is an example: I used ABS so I can attest to the support being easy to remove, especially when you decrease its flow rate to 70%.by destroyer2012 - General
richrap Wrote: ------------------------------------------------------- > If you read my blog post about it, I decided not > to try to remove the toothpaste effect. But it is > very hard to get good mixing - Adrian Bowyer and > Myles Corbett spent quite some time working on > passive systems until using a motor to stir the > molten filament. Yes I understand the problems and theby destroyer2012 - General
That's a cool extruder you have RIchRap but it doesn't seem like it is actually mixing the colors the same way Pia Taubert's is. I would be interested to know what sort of spatial resolution the Pia Taubert mixer has in terms of rapid color changes. Can we now print multiple materials out of one nozzle or would that require extensive purging at every material change?by destroyer2012 - General