Awesome! Welcome to the group crispy. I'm glad you joined. crispy1 Wrote: ------------------------------------------------------- > QuoteIf you're interested in development, you > can join the fun: > - > corexy-3d-printers > > Had no idea this existed. Joined.by iquizzle - General
My printer and other h-bot designs do this. It is still kind of a "bleeding edge" printer geometry, but I am getting good prints. If you're interested in development, you can join the fun: https://groups.google.com/forum/#!forum/h-bot-and-corexy-3d-printersby iquizzle - General
I use foam placemat underneath my mendelmax. It at least helps with the noise. Damping on the motors would be better. On my UConduit, there's's vibration damping built in the frame, and it's very quiet.by iquizzle - General
You can't make money selling printers to yourself. There has to be many more people using them than selling them.by iquizzle - General
Look at the placement of the motors on the UConduit (http://www.thingiverse.com/thing:102972). It would be trivial to keep them out of the heated build chamber in this configuration.by iquizzle - General
I'm not sure PLA will actually degrade at room temperature with humidity. "Degradation" implies a chemical change to the molecular structure. PLA will certainly absorb water since it is hygroscopic. You should dessicate it prior to using it if you're worried about that. Also, I have read that water will hydrolyze PLA at melting temperatures (much like pyrolizing, a.k.a. burning, but with the attaby iquizzle - General
destroyer2012 Wrote: ------------------------------------------------------- > The bigger problem is getting products that don't > deliver on what they promised. The people who made > those products should be punished in some way, > although in theory it should control itself by > eventually destroying people's trust in the > system. According to the KS model, this is not a prby iquizzle - General
vegasloki Wrote: ------------------------------------------------------- > The issue with KS isn't KS, it's some of the > participants. I don't think you can provide any > substantiative documentation that most KS projects > are frauds. To stereotype KS projects in that way > is insulting to projects like Smoothieboard that > are doing the best they can to raise funds. If KSby iquizzle - General
Startups with VC and kickstarter are two totally different things. I've heard this comparison before... but the two things couldn't be more different. People who start shitstarter scampaigns have no responsibility to start a company. They could essentially run the campaign, send all their "investors" trash and quit with the money that they raised. If the people who ran the campaign decide to buiby iquizzle - General
You might be right about the pulleys being too small. I use 40T pulleys and can reliably go much faster. At 15T, you're only moving 30mm/revolution. So that means the motor could potentially be turning at 4 rev/s when you go 120mm/s. When translated to step frequencies, that's 4*200*16 = 12.8kHz, which is pretty high. For a test, you could try going down to x4 microstepping to see if it helps.by iquizzle - General
That's quite weird! I find it odd that the top part of the print is perfectly straight. I've printed things that were ~4 to 5 inches tall without having any drift like that.by iquizzle - General
I usually print with PLA and I always heat the bed around 50-60C. I also know people who use blue tape + kapton and they print with ABS @ 110C(?). One of the biggest reasons to use blue tape with kapton is that it gives a slightly spongy surface -- so I find that it's more forgiving to the height. It also keeps my kapton from getting scuffed up, so it lasts longer too.by iquizzle - General
Traumflug Wrote: ------------------------------------------------------- > The kickstarter model ... > "Shitstarter" kickstarter scampaign My problem is that KS, while being a nice idea, is exploited. People who are not willing to put up their own money to fund their project and make it a business, instead get everyone else to fund it. I'd be in favor of some kind of fund-matching. If yoby iquizzle - General
I put a layer of blue painter's tape underneath the kapton. No bubbles.by iquizzle - General
I can't answer most of your questions, because you are essentially asking why people contribute open source software and hardware. Everybody has their own reasons. I personally think you can't reasonably expect to make any money off of open source unless you are specifically setting up a business plan to do so. You can't just throw stuff out into the wild under an open source license and hope somby iquizzle - General
cozmicray Wrote: ------------------------------------------------------- > Why does a QU-BD type extruder, with hotend 1.5" > from mechanics work so well Serious?by iquizzle - General
miso Wrote: ------------------------------------------------------- > iquizzle Wrote: > -------------------------------------------------- > ----- > > miso Wrote: > > > -------------------------------------------------- > > > ----- > > > You can't use GPL software to make > your > > own closed source one. > > > > > > You mostby iquizzle - General
miso Wrote: ------------------------------------------------------- > You can't use GPL software to make your own > closed source one. You most certainly can. You just can't distribute closed source software that contains GPLed code -- which goes back to what vegasloki said.by iquizzle - General
The reason people don't contribute to open source software is that it has engendered a platform for people to be rude and immature toward each other. People who don't do programming for a living fear contribution because they don't know good coding practice -- and too often, that is grounds for the maintainers to act like the football jocks they never were. Everyone is aware of it. There are pleby iquizzle - General
I don't have a Melzi, but it sounds like either the pcb either needs to use bigger traces or have them fabricated with higher copper weight. Unfortunately neither of these things can be done to your board after the fact. If you keep having problems, you could try looking for places to solder on copper wire in parallel with the traces.by iquizzle - Reprappers
Strip heaters are perfect for this. You can get them as low as ~75W. I'd think something in the 250-500W range with a temp controller should be about right. Something like this: http://www.ebay.com/itm/Vulcan-OSF1517-1550B-Heater-strip-240-volt-/161069188022?pt=LH_DefaultDomain_0&hash=item258078c3b6by iquizzle - General
I dunno -- the bridgeport at work has some pretty beefy NEMA 42 steppers. I'm not even sure I'd use a gecko g540 on those. I think allegro drivers tend to tap out on mid-sized NEMA 23s. They're probably best for mini mill applications.by iquizzle - General
I think a heated bed is better with PLA. I've had some parts (mostly bigger parts with sharp corners) that I could not keep from warping. For most smaller stuff and round cornered objects, I didn't have a problem over a range of speed and hotend temp settings. If you're facing warping issues, I'd recommend not using a fan for the first 10 layers or so, so that it cools more slowly.by iquizzle - General
Cool -- I've been interested in this project as it's quite ambitious. I think it will be quite an excellent setup for 3d printers. It seems that the most attention has been given to those machines. A divergence from overpriced, underpowered 8-bit ATmega chips is certainly overdue there. I do question the ability to operate "large CNC" machines. I doubt you'd have much success hooking up large stby iquizzle - General
I would have said that you couldn't patent the idea of using 2 fingers on a touchpad instead of 1. But Apple went and did it. If you sell a patented idea, the lawyers couldn't give a shit how simple it is -- once you've made enough money, they're going to be on you like white on rice. Big business doesn't like competition and they have a system setup to squash you. I hope you aren't affected byby iquizzle - General
andysuth Wrote: ------------------------------------------------------- > QuoteTraumflug my observation on crowdfunding > sites is, the higher the quality and the less > risky a project is, the lower the backing > is. > > Is that to do with the more established, lower > risk projects have less risk so have a higher > price too? > I would say it has to do with the facby iquizzle - General
I find it a shame that the "values" of the maker movement need to come into question -- but you're right, they do. Several years ago, when I first started exploring hackerspaces, there was never any talk of money. People were actively pursuing projects for the sheer excitement and satisfaction of getting hands-on and building something new or one-of-a-kind, or even making something that already eby iquizzle - General
There are many several ways you can do it. I personally like these things as a fairly clean solution: http://store.terawattindustries.com/14-atx-psu-adapter-for-reprap-kitbareassembled.html#/electronics_assembly_options-fully_assembled I personally trust computer power supplies more than the ones with the screw terminals on the back. PSUs are rated in various ways so that there are some safety mby iquizzle - General
Bowden tubes definitely add backlash, so that is a negative... but it is possible to make them work just as well if you put effort into it and spend some time trying to understand it. As an example, the Ultimaker is capable of some fantastic prints and it uses a bowden setup. Bowden is just more natural for some printers. Yvan Wrote: ------------------------------------------------------- > Sby iquizzle - General
I've used both, but I prefer 1.75mm. The main reason is that it's more flexible and resists movement less. It's usually better for a bowden setup because of this. Also, I like that it moves through the hotend faster due to lower volume. This could reduce the melt zone, but that might be negated in a jhead because you have more insulation.by iquizzle - General