ULTRA-FAST reprap, project development May 15, 2015 04:13PM |
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Re: ULTRA-FAST reprap, project development May 15, 2015 04:49PM |
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Re: ULTRA-FAST reprap, project development May 15, 2015 04:59PM |
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Re: ULTRA-FAST reprap, project development May 15, 2015 06:15PM |
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Re: ULTRA-FAST reprap, project development May 15, 2015 09:15PM |
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Re: ULTRA-FAST reprap, project development May 15, 2015 11:42PM |
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Re: ULTRA-FAST reprap, project development May 16, 2015 02:17AM |
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Re: ULTRA-FAST reprap, project development May 16, 2015 05:54AM |
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Re: ULTRA-FAST reprap, project development May 16, 2015 08:23AM |
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Re: ULTRA-FAST reprap, project development May 16, 2015 09:53AM |
Registered: 8 years ago Posts: 14 |
no need to be aggressive.Quote
cozmicray
"I'm an electric engineer, with proven mechanical experience"
Got any common sense experience --- even Nikolai Tesla used that?
Why?
Fedex printing --- when you absolutely need it in 12 nanoseconds?
I believe squirting out your medium from some type of extruder may be the limiting factor!
[...]
supersonic[...]
Thank you Olaf. i was already thinking about 3mm wire, and gearbox cable tubing. accelerator throttle tubing is heavier and resist only compression, while gearbox tubing is made for traction.Quote
o_lampe
You should at least go for 3mm Extruders. Your bikegear-tube won´t do it. Better look for classic motorbike tubes. They should be able to fit 3mm filament.
My concern is from a certain speed, your melted PLA will "fly away" in sharp bents and corners. And cooling down the material is another point.
Don´t expext high accuracy at high speed.
-Olaf
Re: ULTRA-FAST reprap, project development May 16, 2015 11:22AM |
Registered: 9 years ago Posts: 977 |
Quote
nasone32
@AndrewBCN
about kinetic energy: if it is high, just make a structure that can cope with that. a prusa i3 is not a good example, heavy plate and heavy print head moving around. the print head assembly weighs a kilogram, i'm talkin about a tenth of that.
...
Re: ULTRA-FAST reprap, project development May 16, 2015 06:10PM |
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Re: ULTRA-FAST reprap, project development May 16, 2015 07:53PM |
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Re: ULTRA-FAST reprap, project development May 16, 2015 11:17PM |
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Re: ULTRA-FAST reprap, project development May 17, 2015 02:46AM |
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Quote
nasone32
some ballpark figures.
in comparison a kossel mini can accelerate at 3000 mm/s^2 to 100mm/s and you can't go much faster, also because the arduino can not cope with the calculations. this is an issue of delta designs, the coordinate conversion is extremely heavy on the electronics. at that acceleration the ATmega is doing something like 600 square roots per second.
this is another reason .
Re: ULTRA-FAST reprap, project development May 17, 2015 03:45AM |
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Re: ULTRA-FAST reprap, project development May 17, 2015 08:37AM |
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Re: ULTRA-FAST reprap, project development May 18, 2015 09:53AM |
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Re: ULTRA-FAST reprap, project development May 21, 2015 03:56PM |
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Re: ULTRA-FAST reprap, project development May 21, 2015 04:54PM |
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Re: ULTRA-FAST reprap, project development May 21, 2015 05:06PM |
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I think you're going to be in for a big surprise. People have dedicated their (RepRap) lives to building a better extruder|hot end|printer|heat bed|whatever. Not saying that you can't make improvements. Just that your giant step ideas/goals are a lot harder to make rather than many baby step incremental improvements. Start making prototypes and I think you'll find out that dreaming of improvements is a lot easier than putting them into practice.Quote
nasone32
what do you people think?
Re: ULTRA-FAST reprap, project development May 21, 2015 08:09PM |
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Re: ULTRA-FAST reprap, project development May 21, 2015 11:19PM |
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Re: ULTRA-FAST reprap, project development May 22, 2015 07:20AM |
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Re: ULTRA-FAST reprap, project development May 22, 2015 08:30AM |
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Quote
JamesK
That gave me a good laugh, it has the undeniable ring of truth to it. Still, if we meet every new member with a wall of negativity we risk missing out on the enthusiasm, experience and new viewpoints that they might bring. In my case that would be mostly the 'enthusiasm' category, but nasone did indicate in his first post that he has relevant experience and access to facilities that most of us only dream of. I'd be giving him a chance to show us what he's capable of myself. In the meantime, I have some pieces of aluminum to assemble. Damn, why didn't I think of a cube before?
James
Re: ULTRA-FAST reprap, project development May 22, 2015 09:40AM |
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Re: ULTRA-FAST reprap, project development May 22, 2015 10:22AM |
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Re: ULTRA-FAST reprap, project development May 22, 2015 10:35AM |
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Quote
AndrewBCN
To get that more critical view and better judgment, imo it is essential to actually build a first 3D printer from an existing design, then if possible design your own and built it with some small theoretical improvements and prove that these theoretical improvements actually translate into real improvements in practice. This takes time, but it gives you a proper valuable background and experience in the subject, to venture further in 3D printer development.
Just posting in a forum and gathering comments from others doesn't get anyone very far, I am afraid. Specially in the "General" section...
Re: ULTRA-FAST reprap, project development May 22, 2015 12:38PM |
Registered: 9 years ago Posts: 977 |
Quote
JamesK
Quote
AndrewBCN
To get that more critical view and better judgment, imo it is essential to actually build a first 3D printer from an existing design, then if possible design your own and built it with some small theoretical improvements and prove that these theoretical improvements actually translate into real improvements in practice. This takes time, but it gives you a proper valuable background and experience in the subject, to venture further in 3D printer development.
Just posting in a forum and gathering comments from others doesn't get anyone very far, I am afraid. Specially in the "General" section...
At the risk of seeming pedantic, in his original post he says "but i built only prusas" from which it would seem that he has already walked the path that you suggest. We may be in danger of underestimating Nasone32s level of experience simply because he has a short history on this particular forum.
Re: ULTRA-FAST reprap, project development May 22, 2015 01:30PM |
Registered: 9 years ago Posts: 1,873 |