Best Delta nowdays November 10, 2014 03:56AM |
Registered: 9 years ago Posts: 34 |
Re: Best Delta nowdays November 12, 2014 10:11AM |
Registered: 10 years ago Posts: 469 |
Re: Best Delta nowdays November 12, 2014 05:38PM |
Registered: 10 years ago Posts: 240 |
Re: Best Delta nowdays November 12, 2014 07:23PM |
Registered: 10 years ago Posts: 140 |
Re: Best Delta nowdays November 13, 2014 07:05AM |
Registered: 10 years ago Posts: 1,603 |
Re: Best Delta nowdays November 13, 2014 07:55AM |
Registered: 10 years ago Posts: 157 |
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Kossel Mini - A bit flimsy to be honest, it's under built, expensive, and the upper frame assembly is a bit silly from an engineering standpoint.
Re: Best Delta nowdays November 13, 2014 08:32AM |
Registered: 10 years ago Posts: 1,603 |
Re: Best Delta nowdays November 13, 2014 11:18AM |
Registered: 10 years ago Posts: 469 |
Re: Best Delta nowdays November 13, 2014 02:04PM |
Registered: 10 years ago Posts: 515 |
Re: Best Delta nowdays November 13, 2014 05:02PM |
Registered: 10 years ago Posts: 240 |
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3DRapidClone
Note to the OP: Sheepdog created the Griffin and has a kickstarter for the Griffin Pro. There's obvious bias above.
Further more, there is far more communal support for the Kossel Mini than any other Delta Printer out there.
Re: Best Delta nowdays November 13, 2014 06:44PM |
Registered: 10 years ago Posts: 240 |
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3D-ES
Can you explain what you mean? I probably don't know what I am missing...?
It is rock solid, I don't have a bed probe and don't need one, I turn it on and it prints great.
The upper frame assembly works for me! Screws to lift the top to tighten the belts are easy...
Re: Best Delta nowdays November 13, 2014 07:47PM |
Registered: 9 years ago Posts: 1 |
Re: Best Delta nowdays November 14, 2014 12:13AM |
Registered: 10 years ago Posts: 140 |
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sheepdog43
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3DRapidClone
Note to the OP: Sheepdog created the Griffin and has a kickstarter for the Griffin Pro. There's obvious bias above.
Further more, there is far more communal support for the Kossel Mini than any other Delta Printer out there.
Op asked for opinions, opinions are always biased, that's why they are called opinions, not facts.
Our Kickstarter has ended.
I make nothing on open source.
Re: Best Delta nowdays November 14, 2014 05:45AM |
Registered: 10 years ago Posts: 157 |
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sheepdog43
Moving the top to tighten belts compromises the frames structural rigidity and effects alignment.
You have to make a choice, you can either twist the entire frame to tighten a belt, or you allow some slop to allow for the top to be twisted without effecting the rest of the frame. Not both, at least not with how the Kossel does it. Every time you alter that top frame, you alter the geometry of the frame, the more off your belts are, the more twist you introduce into the frame.
The upper frame is extremely important to the structural strength, it should be clamped solid, not used as a tensioning device and moved about. Besides that, it uses what, one m3 screw to hold each tower? We use three M5s, giving us seven times the clamping force (I once stood on the mini). Also the horizontal rails on the Kossel are held in place only by four m3 screws, the Griffin uses four M5, plus a tapered tongue to lock it in place, the bolts can be finger tight and the frame will still be rigid due to the tapered tongues. I once missed tightening one of them once and didn't know until the bolt fell out while carrying it.
I'm not saying the Kossel Mini is bad, it works, but there are better ways to do things.
Re: Best Delta nowdays November 14, 2014 06:42AM |
Registered: 10 years ago Posts: 240 |
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3DRapidClone
And that is perfectly fine. But OP should have full disclosure on what he is being presented. Not one con came from you speaking about the griffin.
The griffin delta is a great printer. No need to get defensive as I wasn't accusing you of hiding anything to promote your own design. But facts are facts and if it is going to be opinions that sways him he should have the full scope of it all.
Re: Best Delta nowdays November 14, 2014 08:02AM |
Registered: 10 years ago Posts: 240 |
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3D-ES
You are correct, if one of the tower screws unscrews itself, there is a problem, no backup there,
but I think that the screw that is used to lift the top keeps it from lowering if it comes loose..?
Since building it I only had to tighten the filament spur gear, which almost fell out while printing.
I don't move the printer around, that probably helps a bit to keep the printer fine-tuned as it is...
My Kossel uses Delrin V-rollers instead of rails, it is easy to setup and runs perfectly smooth.
That Griffin printer looks solid and that gorilla glass is nice! Shipping to Europe is probably expensive...?
Re: Best Delta nowdays November 14, 2014 10:48AM |
Registered: 10 years ago Posts: 140 |
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sheepdog43
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3DRapidClone
And that is perfectly fine. But OP should have full disclosure on what he is being presented. Not one con came from you speaking about the griffin.
The griffin delta is a great printer. No need to get defensive as I wasn't accusing you of hiding anything to promote your own design. But facts are facts and if it is going to be opinions that sways him he should have the full scope of it all.
Yes, because the one voice mentioning Griffin is totally going to sway him.
Actually I should have mentioned it, but I had just woken up and was on my way out. Also, I wasn't trying to get defensive, just trying to keep it from turning into a half page response like this keeps trying to be (and thanks!).
At any rate, cons for the Griffin OS... (I did say some cons for the Pro)
Yes, it has a smaller community, but you can attribute much of that to age and the fact that the Kossel Mini requires that community, it was released without much documentation and the community has had to rely on each other for almost everything when it came to building one. Other than that and personal preferences, I'm at a loss. I'm not saying the Griffin is perfect, I know where it can be improved, and people do have their preferences, but in terms of cons or problem areas, I can't really come up with anything significant. I spent the last year pretty much beating it up as much as I could and subjected it to criticisms of multiple engineers and it's come through with flying colors. If someone does have some criticism, I'd be happy to listen so long as it's reasonable (we've had some absolutely insane requests and criticism!).
Oh, and since it was mentioned, you can build a Griffin on a PrintRbot as well. It wouldn't be the first, or second for that matter. Just be prepared, it can take quite a while to print the lower frame connectors on one.
Re: Best Delta nowdays November 15, 2014 06:34AM |
Registered: 9 years ago Posts: 34 |
Re: Best Delta nowdays November 15, 2014 12:31PM |
Registered: 10 years ago Posts: 140 |
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AFK-er
I'm looking forward to build new delta printer because i'm not happy with my Rostock. It's very loud and not stable enough to print fast. I wanted to build extended version of 3DR printer but i'm kind of curious about that Griffin. The only big problem is [us.misumi-ec.com] They are overpriced in poland and cost A LOT. And is Griffin a reprap? Because i can"t find any site or anything about how to build it.
Re: Best Delta nowdays November 15, 2014 10:09PM |
Registered: 10 years ago Posts: 240 |
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3DRapidClone
Actually, I do have a question since I've been pondering whether or not to build the Griffin due to its high speed capabilities. How does v-rollers handle that kind of high speed, i.e. (300mm/s +) Because I am willing to pay that extra money for linear rails if it helps, though noisy?
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AFK-er
I'm looking forward to build new delta printer because i'm not happy with my Rostock. It's very loud and not stable enough to print fast. I wanted to build extended version of 3DR printer but i'm kind of curious about that Griffin. The only big problem is [us.misumi-ec.com] They are overpriced in poland and cost A LOT. And is Griffin a reprap? Because i can"t find any site or anything about how to build it.
Re: Best Delta nowdays November 15, 2014 11:20PM |
Registered: 10 years ago Posts: 240 |
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3DRapidClone
[griffinprinter.org]
Here you go, everything is neatly documented. It's a reprap, It's a Kossel Mini derivative that uses V-slot, and different ball joints, its similar to Ultibots, but ultibots uses a PG35L micro direct drive extruder. Griffin is designed for Geared Stepper motors.
Re: Best Delta nowdays November 16, 2014 01:41AM |
Registered: 10 years ago Posts: 140 |
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sheepdog43
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3DRapidClone
[griffinprinter.org]
Here you go, everything is neatly documented. It's a reprap, It's a Kossel Mini derivative that uses V-slot, and different ball joints, its similar to Ultibots, but ultibots uses a PG35L micro direct drive extruder. Griffin is designed for Geared Stepper motors.
The extruder is a dual system, it can use a standard Nema 17 or a geared Nema 16/17stepper. I don't recommend the normal Nema if you plan to run fast, I made it that way because I planned on going geared eventually, but also it allows people to build it a bit cheaper.
It's not a Kossel Mini derivative.
I started out trying to scale up the original Kossel and Cerberus as well as incorporate things I learned from the Rostock and it was a disaster. When I started designing it, the Kossel Mini and Cerberus Pup hadn't even been revealed to the public yet. When I gave up scaling those, I started designing my own from scratch. About this time, the Mini Kossel came out, but it mostly just reinforced that I was going the right direction, as I had a pretty good idea of where I was going with my own design. I'm not saying it had no influence, but if you were to look at the prototypes, it's obvious that it took it's influence more from the Kossel legacy and Cerberus.
Many things look similar because they were natural progressions of things done at the time, but because I spent months getting things dialed (mildly O.C.D.), by the time I released the Griffin, people thought everything was just taken straight from the Mini.
Re: Best Delta nowdays November 16, 2014 05:40AM |
Registered: 9 years ago Posts: 34 |
Thank you for your reply. Can you tell if it's possible to build it without using v-slots on top and bottom? Or maby can you tell me some desing without using any v-slots? I can't manage to buy too many of themQuote
3DRapidClone
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AFK-er
I'm looking forward to build new delta printer because i'm not happy with my Rostock. It's very loud and not stable enough to print fast. I wanted to build extended version of 3DR printer but i'm kind of curious about that Griffin. The only big problem is [us.misumi-ec.com] They are overpriced in poland and cost A LOT. And is Griffin a reprap? Because i can"t find any site or anything about how to build it.
[griffinprinter.org]
Here you go, everything is neatly documented. It's a reprap, It's a Kossel Mini derivative that uses V-slot, and different ball joints, its similar to Ultibots, but ultibots uses a PG35L micro direct drive extruder. Griffin is designed for Geared Stepper motors.
Re: Best Delta nowdays November 16, 2014 12:14PM |
Registered: 10 years ago Posts: 140 |
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AFK-er
Thank you for your reply. Can you tell if it's possible to build it without using v-slots on top and bottom? Or maby can you tell me some desing without using any v-slots? I can't manage to buy too many of themQuote
3DRapidClone
Quote
AFK-er
I'm looking forward to build new delta printer because i'm not happy with my Rostock. It's very loud and not stable enough to print fast. I wanted to build extended version of 3DR printer but i'm kind of curious about that Griffin. The only big problem is [us.misumi-ec.com] They are overpriced in poland and cost A LOT. And is Griffin a reprap? Because i can"t find any site or anything about how to build it.
[griffinprinter.org]
Here you go, everything is neatly documented. It's a reprap, It's a Kossel Mini derivative that uses V-slot, and different ball joints, its similar to Ultibots, but ultibots uses a PG35L micro direct drive extruder. Griffin is designed for Geared Stepper motors.
Re: Best Delta nowdays November 16, 2014 05:20PM |
Registered: 10 years ago Posts: 240 |
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3DRapidClone
Are the traxxas and losi joints equal in terms of handling that kind of speed? Im not sure if the cherry pi effector design can handle that speed either.
My apologies on the kossel mini derivative assumption. It just looks very similar (the motor vertex triangular design, dual extrusion on those bottom vertexs, bottom mount motors, exposed belts holding on the the carriages, single frame upper vertex like on the XL, geared stepper extruder, interchangeability with the kossel mini effector, exposed metal frame)
Re: Best Delta nowdays November 16, 2014 05:25PM |
Registered: 10 years ago Posts: 240 |
Standard 20x20 might fit, I will have to look. As mentioned though, it would eliminate some of the benefit of the Griffin design.Quote
3DRapidClone
The Griffin Printer printed parts have grooves in them to have better contact with the V-slots. So unless you modify all the files, which would be horribly inefficient. I would say go with something else.
Re: Best Delta nowdays November 20, 2014 06:21AM |
Registered: 9 years ago Posts: 44 |
Re: Best Delta nowdays November 20, 2014 06:40AM |
Registered: 14 years ago Posts: 3,742 |
Re: Best Delta nowdays November 20, 2014 11:34AM |
Registered: 10 years ago Posts: 140 |
Re: Best Delta nowdays November 20, 2014 08:53PM |
Registered: 10 years ago Posts: 240 |