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Computational Hydrographic Printing [video]

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Re: Computational Hydrographic Printing [video]

#21

I love how this is a complementary technology to 3D printing by the way of a traditional printer. Simple. Effective. The biggest obstacle for widespread adoption might be software, in other words a robust toolkit for designing "wraps" of these imprints for your own 3D models.

Well I may just be suffering from the curse of knowledge, but I found blenders texture paint system to be very good.

Once set, you can employ so many techniques with it to map images to a 3d model.

Re: Computational Hydrographic Printing [video]

#22

I was amazed until they got to the cat (about 3:00 in). At that point I was blown away. The inside surfaces of the "outside" legs were also accounted for in the mapping, and it was spot on. This is seriously cool.

This is incredible but I'm assuming that the print and the objects are painstakingly aligned as the immersion rod has no lateral movement.

Sure seems like something that could be easily remedied in future iterations. They've already figured out the hard part; alignment is a solved problem for all intents and purposes.

Re: Computational Hydrographic Printing [video]

#23

I was amazed until they got to the cat (about 3:00 in). At that point I was blown away. The inside surfaces of the "outside" legs were also accounted for in the mapping, and it was spot on. This is seriously cool.

Yeah, that was the thing that impressed me most, too.

Re: Computational Hydrographic Printing [video]

#24
post #17

Wow, this is very cool. They invented a new method for printing taking advantage of the fluid nature of liquid to get to every surface of a 3-D object.

FYI hydrographic printing isn't new... nor is the computational part to be honest. I assume both of these techniques have been used together before, but what we are seeing here is both: very well done, and: using off-the-shelf components.

Bonus the-future-is-now moment: "3D vision systems" are "off-the-shelf components".

Re: Computational Hydrographic Printing [video]

#25
Do you know what those cloverleaf shaped metal beams are called, and how you can learn more about building hardware prototypes with those kinds of products?

I know very little about mechanical engineering and hardware prototyping, but I saw those metal thingies about a year ago in a DYI tinkerer community (it was used in a DYI 3D printer), and I have been wondering about that topic ever since.

Re: Computational Hydrographic Printing [video]

#26

Do you know what those cloverleaf shaped metal beams are called, and how you can learn more about building hardware prototypes with those kinds of products? I know very little about mechanical engineering and hardware prototyping, but I saw those metal thingies about a year ago in a DYI tinkerer community (it was used in a DYI 3D printer), and I have been wondering about that topic ever since.

Those metal beams are called aluminum extrusions and are sometimes referred to by the brand name "80/20".

They're super fun and useful in prototyping - kind of like an erector set for adults.

Re: Computational Hydrographic Printing [video]

#27
post #17

Wow, this is very cool. They invented a new method for printing taking advantage of the fluid nature of liquid to get to every surface of a 3-D object.

FYI hydrographic printing isn't new... nor is the computational part to be honest. I assume both of these techniques have been used together before, but what we are seeing here is both: very well done, and: using off-the-shelf components. Bonus the-future-is-now moment: "3D vision systems" are "off-the-shelf components".

What do you mean the computational part isn't new, who has done it before?

I would guess the part that would be commonly done is the texture mapping and the print out of some kind of simple projection

It looks like they have added, crucially, the math to account for the topology of the dipping process.

Re: Computational Hydrographic Printing [video]

#28

Earlier quoted context omitted.

FYI hydrographic printing isn't new... nor is the computational part to be honest. I assume both of these techniques have been used together before, but what we are seeing here is both: very well done, and: using off-the-shelf components. Bonus the-future-is-now moment: "3D vision systems" are "off-the-shelf components".

What do you mean the computational part isn't new, who has done it before? I would guess the part that would be commonly done is the texture mapping and the print out of some kind of simple projection It looks like they have added, crucially, the math to account for the topology of the dipping process.

>>the math to account for the topology

Looks brute force to me as it is base only on the forward problem.

Re: Computational Hydrographic Printing [video]

#29

Do you know what those cloverleaf shaped metal beams are called, and how you can learn more about building hardware prototypes with those kinds of products? I know very little about mechanical engineering and hardware prototyping, but I saw those metal thingies about a year ago in a DYI tinkerer community (it was used in a DYI 3D printer), and I have been wondering about that topic ever since.

Those metal beams are called aluminum extrusions and are sometimes referred to by the brand name "80/20". They're super fun and useful in prototyping - kind of like an erector set for adults.

Thanks! What other items often go together with these aluminum extrusions? Is there a place or a book to learn about this topic, or is it something that people only learn through experimentation and mimicking?

Re: Computational Hydrographic Printing [video]

#30

Earlier quoted context omitted.

Those metal beams are called aluminum extrusions and are sometimes referred to by the brand name "80/20". They're super fun and useful in prototyping - kind of like an erector set for adults.

Thanks! What other items often go together with these aluminum extrusions? Is there a place or a book to learn about this topic, or is it something that people only learn through experimentation and mimicking?

In addition to the 8020 beams already mentioned, there are also MakerBeam (http://www.makerbeam.eu/) and OpenBeam (http://www.openbeamusa.com/).

Primarily they are used for building structures quickly and easily - a saw and a wrench are the only tools you need. The standardized brackets for each beam type allow you to make 90 and 45 degree angles.

But they are often used for more than just framing. The 3D printing community has embraced extrusions because you can also use them as bearing surfaces, mount motors and servos, limit switches, etc. Basically anything that has a hole big enough for a machine screw can be mounted to a beam either directly or through an easily made mount (usually to get the angle that you want - all it takes is some sheet metal).

The quickest way to learn is to look at examples. The OpenBeam website has lots of examples. The system is so simple that you can understand exactly what is going on just by seeing a picture.

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