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Haven't had much problems switching back and forth. I think you just have to give it a good purge and baby it up or down to the right temp while feeding it a couple mm's every few seconds. I'm working a good 50-60 hours a week on 2 jobs. I just don't have the time for Ebay right now. Maybe next year.
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DisruptiveTech
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I think I've successfully mitigated any PLA issues with the V2. I like the alu, but comparing the 2 is like comparing apples and oranges. One's actively cooled and one's designed to be passively cooled. If I had known people would repurpose it to be actively cooled on a plastic carriage, I might have gone with a 5.6 ohm resistor. That's not it's intended use. I could design something made for a f
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DisruptiveTech
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Smart_Rap
This is why I stopped selling kits. I can't account for a hot end that I didn't assemble. As for "under powered," your average 40watt heater cartridge is made in a Chinese gulag. They're ridiculously over powered and unsafe. I make it a point to source my components responsibly. As for the fan, all you need to do is cycle down the speed, depending on your setup. I don't think shrouds are a good f
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DisruptiveTech
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Smart_Rap
I concur. The j-head lite is passively cooled, but that means it radiates a ton of heat upward. Not for use with a pla carriage, without a fan.
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DisruptiveTech
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Smart_Rap
I've been thinking about buying some printed circuit boards in small scale to build some custom controllers. I'm accustomed to Eagle Cad, but I've never bought blank PCB's before. I know Eagle Cad has a built in service to fabricate PCBs, but I'm wondering if this is necessarilly the best service.
Is there a concencus on the best production run level board producer out there?
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DisruptiveTech
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General
I've thought about this for a while. Confucious says, "Don't kill a mosquitoe with a cannon ball." I look at the fundamental thermodynamic problem and see a simple solution. It's easy to add exotic cooling systems to your build and fix the problem, because so many of the hot ends on the market are reliant on fans.
If you have a hot end that isn't reliant on a fan in the first place, you don't n
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DisruptiveTech
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General
This is an awesome 3D printa. This printa is very well conceived. These guys really know how to build a printa. I'd very much like to get one of these printas, but I'm afraid this printa is out of my price range. Printa.
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DisruptiveTech
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Crowdfunding Projects Announcements
Quotezerodamaeon
That saying does not really apply here unless you mean it in the sense that a artist buys a brush without any bristles and paints a horrible picture then tries to blame it on the brush.
Well, you can always scalp a horse and duct tape it's mane to your brush. Then again, I can fix anything...
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DisruptiveTech
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General
Irregardless of whether it's some dude with a lathe or the real McCoy, it's a poor artist that blames his paint brush. I'd suggest getting a hold on some ceramic (mineral wool) srtip material and placing it between the heater and the heat sink. A PTFE washer would work too.
PLA does suck on stainless steal "throats" (chinese for barrels I guess), but If you soak a cotton ball in vegtable oil an
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DisruptiveTech
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General
Oh I forgot. Get rid of the limit switches too. You can get rid of a lot of crap on these boards.
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DisruptiveTech
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General
Quick answer; They're all rubish. I'd like to see a board with 4 stepper drivers, 1 thermistor port, and an 8 bit processor. Something basic and minimalistic could serve a growing niche in the market. Plus, if you get rid of the HBP and bring your power limit down to 60 watts, it would be significantly more cost effective compared with the robust, but ultimately overpriced controllers on the mark
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DisruptiveTech
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General
Here's the article:
Apparently, they've already done test a batch and they're going to begin production in 2-3 years. I think it'll probrably be a much better process than what they're doing now. People think if it's made out of corn, it must be eco friendly. But how eco friendly is PLA really?
Corn needs fertilizers and insecticides which are made from petrochemicals. Then there's the diese
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DisruptiveTech
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General
I wouldn't worry about plastic being biodegradable. Eventually, through natural selection or genitic engineering, microbes will evolve to eat plastics. There's a smorgasbord of high energy hydrocarbons just floating around in the ocean and in landfills waiting to be exploited.
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DisruptiveTech
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General
If they can make it out of bio methane, they can make it out of regular methane (natural gas). But if they started making PLA out of fossil fuels, I'd imagine it would hurt PLA's image as eco friendly, even though it'd still be biodegradable.
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DisruptiveTech
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General
Nature Works just got $2.5 million in funding from the US department of energy to develop bio methane to lactic acid conversion technology; lactic acid being the main building block of PLA. Bio methane is derived from organic matter such as animal manure, sewage, and municipal solid waste. Poop is interesting:
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DisruptiveTech
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General
Nice. You almost pass for a native English speaker.
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DisruptiveTech
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General
Are you affiliated with this product?
How much are you getting paid?
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DisruptiveTech
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General
This is not a printer. This is a kit. Capitalism is a crude bitch. She rewards the lowest common denominator. Unfortunately. suckers like you... no offense... get roped into believing vendors with great pictures and crappy products.
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DisruptiveTech
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General
6mm acrylic frame prusa I3 knock off. Pure garbage. But it's got a hell of an Ebay page. "Up to 99.99% printing acuracy!!!"
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DisruptiveTech
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General
Not a good idea. Ferrous material will destroy hot brass. Don't take a wire brush to a brass nozzle.
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DisruptiveTech
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General
I've yet to see proof of contaminated filament rendering a quality hot end useless. $100 hot ends shouldn't be destroyed so easily. Unless you bought it from Joe P.
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DisruptiveTech
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General
I've bought $50 Makerbot filament, $19 Chinese filament, and extruded my own filament. Can't say there's much of a difference. Plastic is plastic. I chuckle when when people claim there hot ends are destroyed by bad filament. It's kind of a myth I think. Unless it had sand in it or something, it's highly unlikely. It's like the wolf-turkey or the samsquanch.
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DisruptiveTech
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General
Filament prices are going down because of the colapse in commodity prices and over supply in the market place.
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DisruptiveTech
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General
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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DisruptiveTech
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Sandbox
Mung is right. We are highly evolved primates capable of self determination, circling the Sun at 30 klicks a second. Do we really need babysitters? NO
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DisruptiveTech
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Administration, Announcements, Policy
Depending on which batch you have, there should either be a piece of red tape on the heater leads, or they should be marked with a T or H. If this isn't present, than check for the thicker / longer metal part of the leads. That's your heater. Likewise you can check one set of the leads for a resistance of 6.8 ohms with a multimeter.
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DisruptiveTech
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