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I need to try it by hand I guess, but I would imagine that a long bridge WOULD be affected by gravity, so if you made it vertically it would be much straighter... maybe my intuition is wrong. Anyone try it? But sagging is due to gravity, so if you remove it, it should not sag. And with FDM bridging is the big problem to getting better prints of ANY geometry...
Paucus
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paucus
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Developers
What about putting a small printer inside a roll cage type contraption, for rotating the whole printer, as a "simple" way of getting the extra axis?
I've seen 3d printers printing sideways and upside down, and in 0-gravity even, so it should work...
You should be able to print bridges vertically, at least a couple of layers, then return to "normal" and continue printing, with a smart slicer... ge
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paucus
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Developers
I did just that, color post-extrusion, using markers! I've posted it before:
It works pretty well, getting even photo-quality prints!
and
Since it's painted as the object is being made, you don't have any problems in reaching internal cavities and such. It's painted from above, just like the plastic being deposited.
Issues remaining to solve are getting a better instrument for painting than
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paucus
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Developers
On point 12, hotends, you have a choice of one nozzle, two nozzles, one nozzle and two filaments (ie Chimera or Diamond)... or even four nozzles, like the Kraken.
If you have two nozzles you need to be able to level one against the other one.
Filament size, 1.75 vs 3mm...
Bowden vs Direct drive...
On the Extruder, consider what it takes to be able to push soft rubber filaments succesfully (ie ha
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paucus
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Developers
is there any other info on these that you know of? or just the aliexpress link? I bought some to try, am waiting to get them in a few days... Also tried the other Smoothie clone with the unpronouceable name, the AZSMZ (http://www.aliexpress.com/snapshot/6625312665.html).... first try it worked, replacing a smoothieboard. Nice!
These should have digital pot control, so better than hand- tuning a P
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paucus
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Controllers
Very nice description, and you are correct on all counts...
It's a delicate balance between giving encourament and internally thinking "that's it, we'll never hear from him again..."
He should walk before he runs... but you never know. Hope we hear the results in the future.
To me the key for speed may be more on the extruder/hotend than on the mechanical part of the printer... for instance hea
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paucus
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General
cdru may be right, but ignore him :-)
Do it, experiment.
If we knew beforehand always how hard things will be we'd never start anything complex.
Paucus
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paucus
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General
Also define speed… if you want to print more copies faster of one or two small pieces, then two printers are faster than one fast printer, or you could have one printer printing with two heads to make two copies of the same item. FDM has inherent limitations on top speed, but it has very interesting features compared to other printing technologies, like the ability to combine multiple materials
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paucus
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General
I’m using the Bulldog Lite which is for 1.75mm only, and it works very well overall. It won’t print flexible filament as is, but it can be fixed to do so by changing one part (you’ll need to get it machined, though). I like RRD, but have not tried the Hexagon yet. In particular, anyone tried it with PLA? The other filaments should work fine, but all metals and PLA are the problem, usually.
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paucus
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General
I found a way to use flexible filaments with the Bulldog extruder, who also make the Hexagon hot end. It involves a replacement part. If there’s demand for it, it gives you a great new capability, so contact me.
What other experience does anyone have with the Hexagon? Do you recommend it? Is it ok for PLA, being all-metal?
Paucus
www.kikailabs.com.ar
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paucus
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General
I’ve used stainless steel nozzles and they work fine, no problem with the heating… maybe you need to up the temperature a few degrees, that’s all.
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paucus
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General
I think it looks very promising, congratulations!
How hard is the object? Does it need infiltration with a plastic afterwards for it to be stiff?
What have you been able to do with these pieces? Use them for molds?
Regards
Paucus
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paucus
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Casting and Moldmaking Working Group
The Duet was nice, as I remembered when I evaluated it... the main problem is I wanted a CoreXY system and it was not supported then... is it now?
Also it was inconvenient and expensive to have to use the expansion board in order to have a second extruder, but I believe that's been solved now.
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paucus
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General
I’m using the Smoothieboard for my products at Kikai Labs, and am very happy with it, even though it’s expensive compared to others if you ignore the extra features. The firmware is very nice. I’ve tied it in to a 4D Systems smart LCD (touch panel, color). I’ts used by the new Fabber M11 printer.
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paucus
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General
This is what the Kikai Labs objects look like:
How do you propose to use an inkjet? Let's discuss ideas!
Regards
Marcelo
Kikai Labs
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paucus
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General
Creo que es muy interesante y los feliicto por la iniciativa. Podrán publicar más datos pronto? En cierta forma si no es una mejora sobre las placas actuales al menos que tenga mejor precio, fabricación nacional o algo distintivo… Por ejemplo para hacer impresoras más grandes 12V va a quedar chico para la plataforma calefaccionada… podrá usar 24V?
Esperamos detalles, pero me alegro por lo que
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paucus
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RepRap Usergroup - Argentina
No sé el de HighQS… Kikai Labs tiene filamento flexible. Acá están nuestras sugerencias de cómo usarlo, así como el nylon tambien. Calculo que te servirá con esa marca también.
Como imprimir con flexible
Paucus
Kikai Labs
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paucus
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RepRap Usergroup - Argentina
El mayor problema es la lmitación para usar filamentos flexibles, si es que los usas… la Ultimaker está considerada una de las mejores impresoras y es Bowden…
Paucus
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paucus
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RepRap Usergroup - Argentina
Kikai Labs tiene filamentos de 1.75mm por lo general, pero tambien de 3mm, en ABS, Flexible y Nylon (común y “óptico”, brilla con luz negra). Son fabricados en Argentina, y muy buenos (lo digo por experiencia). Pronto esperamos ofrecer PLA tambien.
Saludos,
Paucus
Kikai Labs
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paucus
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RepRap Usergroup - Argentina
Why not do the opposite and make a map of schools that do NOT have a 3d printer, so that parents can put pressure on them and printer dealers can target them for selling? on the other hand, why not just not waste time on this and try to raise funds for your local school instead?
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paucus
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General
La impresora es Cartesiana o CoreXY? La plataforma es fija y se mueve el hotend en X e Y, no?
Muy bueno, bien grande, para hacer piezas interesantes!
Sugiero que contemples hacerla cerrada, sobre todo si vas a usar ABS.
Suerte!
Paucus
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paucus
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RepRap Usergroup - Argentina
No matter how many extruders you can manage, that is the max number of colors you will have.
If you have a mixing extruder then you may get more shades and colors, but without too much precision, unless you purge a lot of plastic, which means much slower printing. If time is not critical, it may be useful. Also is the only goal to print in colors? I think it's more interesting to mix different ma
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paucus
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Developers
Take a look at this software, it uses voxels instead of breps, and it may be ideal for color: Monolith
We developed our own add-on to Slic3r for slicing in color, for applying with the magic markers on the outside of the object. It runs as a post-generation script to merge our color gcode with the object gcode made by Slic3r. This is good because you are not modifying slicer itself, but it may
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paucus
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Developers
Why not paint the extruded plastic, instead of using colored plastic? You'll never get full color anyhow with colored plastics...
Kikai Labs - colored FDM objects
This is what we tried, and it works pretty well, even though it'd need much additional engineering before it could be a product... it does work, though.
It's white plastic with magic marker paints (which could be some other painting
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paucus
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Developers
Un sitio para hacer "litophanes", o sea una fotografía hecha en relieve negativo, para ver a trasluz.
http://3dp.rocks/lithophane/
Un sitio para obtener el STL de un pedazo de mapa, en relieve, para imprimir: http://jthatch.com/. Por ejemplo busqué Bariloche y bajé el terreno perfectamente!
Video tutorial de cómo hacer moldes en metales blandos: https://www.youtube.com/watch?v=M475FoWD0wg
Siti
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paucus
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RepRap Usergroup - Argentina
Puse una guía de recomendaciones para imprimir con flexible y con nylon en nuestro sitio, por si le es útil a alguien: Guía Impresión Nylon y Flexible
Saludos
Paucus
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paucus
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RepRap Usergroup - Argentina
Yo pensaría cual es el foco de una reunión Reprap... sólo mostrar impresoras caseras? Para mi habría que mostrar algun desarrollo original, que se de charlas / presentaciones sobre eso.. tambien que sea un lugar de compra/venta/trueque de partes. Pero si es sólo mostrar otra Prusa i3 más, un fin de semana largo de sol, entiendo que no vayan muchos. Nosotros expusimos el sábado, ya con eso fue bas
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paucus
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RepRap Usergroup - Argentina