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Nautilus 3d printer
Nautilus best STL files for 3D printing・Cults
All Heil Neo Atlantis - Secret of Bluewater-Skyship, Garfish I, Garfish II
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€3.76
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The Open Source Nautilus 3D Printer's Numerous Features « Fabbaloo
By Kerry Stevenson on October 10th, 2019 in printer
Tags: filament, hydra research, nautilus, thermoplastics
Hydra Research’s Nautilus 3D printer [Source: Hydra Research]
I’m looking at the Nautilus open source 3D printer from Hydra Research.
Portland-based Hydra Research has been working on the Nautilus for some time, but the company is now offering the machine to the public after a “successful pre-order campaign”.
The Nautilus enters a very competitive market for desktop 3D printers, and Hydra Research’s strategy is to include a number of practical ease-of-use features and high-quality components in the design.
Three of Hydra Research’s Nautilus 3D printers [Source: Hydra Research]
The Nautilus, which includes a reasonable build volume of 205 x 205 x 220 mm, includes a removable magnetic spring steel print plate that should make it very easy to remove every print. The company says they intend to offer different types of print plates to match the print materials, but as of now they have two coatings available: BuildTak PEI and BuildTak Original.
Unlike most open source 3D printer designs, the Nautilus includes an entirely enclosed build chamber. This feature should capture stray heat from the hot end and build plate to decrease thermal gradients and reduce the possibility of print warping.
One of the Nautilus’ key features is an easily swappable toolhead. They currently offer two toolheads, the X 400 Tool Cartridge, which is the default, and the B 250 Tool Cartridge, which is for higher levels of detail. I suspect the latter includes a 0.25mm nozzle, rather than the standard 0.4mm nozzle diameter. If the Nautilus proves successful, it’s likely that Hydra Research will produce additional cartridges for further material functionality.
A very small 3D print by Hydra Research’s Nautilus 3D printer [Source: Hydra Research]
I should note that the X 400 Tool Cartridge includes E3D’s “Nozzle X”, which is a very powerful steel nozzle that resists abrasion from materials such as carbon fiber, but also includes the useful feature that stray material will not stick to it!
Like most machines these days, the Nautilus includes a filament-out detector, so you won’t ruin overnight prints on a short spool. There’s also a power recovery mode that will restore your print when power is restored after a failure.
A 3D printed nylon carbon fiber part by Hydra Research’s Nautilus 3D printer [Source: Hydra Research]
But there’s one rather interesting feature I haven’t seen on other machines. They explain:
“Crash detection — eliminates layer shifts by monitoring motor load and correcting the position of the tool head if a motor loses its position.“
I’m not sure how this works, but it sounds good. Could they be using a closed loop approach here?
The Nautilus includes a fancy color touchscreen, and a WiFi connection to allow for remote submission and control of print jobs.
A 3D printed Pi case in vinyl material by Hydra Research’s Nautilus 3D printer [Source: Hydra Research]
One thing I am very impressed with is Hydra Research’s attention to operator success. For example, they’ve put a module in the Cura marketplace that includes print profiles for the machine.
They also provide a very extensive and easy-to-use section on their website that advises operators in detail in four areas:
-
3D Print Quality Troubleshooting: A detailed visual guide to typical print failures and what to do about them.
-
Design Rules for FFF 3D Printing: A set of sixteen design rules for various geometries, including threading, horizontal holes, pins and other commonly challenging design features.
-
Advanced Cura Slicing: Ten ways you can use Ultimaker Cura slicing software to handle unusual 3D printing scenarios.
-
Material Guide: A set of eight guides for specific types of materials, such as flexible, ABS, HIPS, etc.
The Nautilus is priced at US$2,500.
Via Hydra Research
TwitterKerry Stevenson, aka "General Fabb" has written over 8,000 stories on 3D printing at Fabbaloo since he launched the venture in 2007, with an intention to promote and grow the incredible technology of 3D printing across the world. So far, it seems to be working!
View all of Kerry Stevenson's posts.
Nautilus 3D detailed file・3D printer design download・Cults
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Thousands of meters underwater: 3D printing in ocean exploration
URI Deep Sea Robotics Lab Principal Investigator Brennan Phillips.
Despite the international craze for space travel, the true last frontier may be closer to home. Oceans cover more than 70% of our planet's surface, but the National Oceanic and Atmospheric Administration (NOAA) estimates that less than 20% of the oceans are fully explored. Compared to the scale of space exploration, the study of the oceans is underfunded and undervalued. However, some researchers are persevering despite the challenges and are turning to 3D printing as a way to go deeper.
At the Underwater Robotics and Imaging Lab, part of the University of Rhode Island's Bay Campus, Professor Brennan Phillips and his students are building instruments that can probe thousands of meters below the surface of the ocean.
Using the Formlabs Form 3+ and Form 3L SLA 3D printers, the lab prints waterproof camera cases and a variety of research tools for its work.
Pressurized Waterproof Parts
Ocean mapping requires tools that are not only waterproof, but remain so even under enormous pressure far below the surface of the ocean. Phillips and lab students began designing a printed camera case that could keep the device completely dry even under pressure while still being easily disassembled for data retrieval. After dozens of iterations, the team settled on a two-piece cylindrical design printed on Form 3+ in Clear Resin. The internal structure of the case holds the circuit board and is filled with epoxy resin that holds the camera lens in the air. Everything under the lens is epoxy, poured through holes built into the body structure.
"We have been given the task of what is the smallest and cheapest deep sea camera we can make? Now we have printed dozens of these cameras in different shapes, and since this is a printable thing, we can make any shape we want.
We can quickly design something - then, assemble the electronics, put it in there, optimize the size, and then pour the epoxy," says Phillips.
3D printing allowed the lab to iterate rigorously without worrying about going over budget, and also allowed for more design flexibility than machining.
The DEEPi camera design uses a hybrid printed mold and an O-ring, an epoxy-filled volume for PCB components, and an external clear glass viewing window.
The laboratory uses a pressure vessel to simulate deep water conditions. Once Phillips and his students settled on a two-piece epoxy design, they placed the pieces in a pressure chamber, increasing the pressure to simulate a true deep sea environment.
Why SLA 3 D - perfect for deep sea robotics
When evaluating various 3D printers for Phillips Lab, accuracy and material properties were top priorities. The isotropic nature of SLA parts means they are not porous or water-permeable, as FDM printed parts can be.
The smooth surface of the SLA parts also ensures that functional assemblies, such as two-piece cylindrical housings, can be connected to each other without a rough surface causing air gaps. Precision and high resolution also contribute to water resistance - incredibly tight tolerances and small part sizes allow screw threads to be printed directly into the material, and in Phillips Lab this is done for both the two-piece body and the screws that serve as additional protection for the mounting.
Fully printed housing that can protect electronics from sea water at depths of more than 1000 meters. The O-rings are printed directly on the parts and the body is sealed by a hand-screwed rim.
“You need 100% SLA detailing - with FDM you might be able to get an IP rating from them, but you won't be able to withstand more than a couple meters of pressure. Secondly, you need permission so that the o-ring between the two parts will ensure a complete seal. These parts come straight out of the printer and we sand them a little, but then orient them so that the critical surfaces are smooth and we get a perfect seal" , says Phillips.
"And the third reason is that the properties of SLA materials are much better - there is no comparison at all. They are much better in terms of yield strength. All moduli of elasticity are better than any other material."
The precision of Formlabs printers and the availability of Formlabs materials have allowed the lab's core work, watertight deep water hulls both on land and offshore, to thrive. In January 2020, Phillips and his students published their 3D printing process using a stabilization rig on the Form 2. They were able to print the same cases without perceptible differences from their land-based counterparts, which means these devices can be printed and deployed. locally, on ships around the world. Continuing the laboratory's mission to democratize deep sea science, this work provides evidence that these important tools can be made inexpensively and locally.
Working with Form 3L
When Formlabs announced the Form 3L large format 3D printer, Phillips and the lab were among the first to get to work right away.
"We were among the first to purchase Form 3 L " , says Phillips. The Form 3L's large format allowed them to experiment with larger underwater structures and improve other lab functions with innovative research tools.
To deploy these housings and other monitoring devices underwater, the laboratory must use and maintain thousands of feet of thin fiber optic cable. To avoid tangles or knots, they first used repurposed bicycle wheels to guide the fiber over the side of the boat. However, with a large-format SLA printer on hand, they were able to prototype the design to reduce the size and increase productivity of the process.
A 3D printed "slide" helps guide fiber optic cables smoothly along the side of the boat without tangling or breaking them.
“We didn't want to use a swivel pulley or wheel for line. We needed a slide. So we've printed about three or four iterations of this slide. It's big, nice, and smooth, and that smoothness helps with finer lines,” says Phillips.
The slide printed on Form 3L in Clear Resin reduces the time it takes to store line carefully for reuse and reduces the number of times they need to replace their equipment.
Innovations in fiber optics
Line, despite the complexity of rewinding, is not the thinnest material. However, fiber optic cables cannot be treated in the same way, as they are much more expensive in the event of a breakdown. Phillips Laboratories partnered with Nautilus Defense LL, based in Pawtucket, Rhode Island, to pioneer the invention of a new type of fiber optic line, or FOFL. “Fiber optics gives us Ethernet, live video and the like. This is very difficult to do with copper cables over long distances”, says Phillips.
But fiber optic line wasn't quite usable on its own - it needed a mechanical connection point to be able to pull on it without breaking the fiber optic strand. Since fiber optic cables cannot be knotted or manipulated in the same way as other, stronger fishing lines, the laboratory had to invent a device for the end of the cable.
Printed to the tight tolerances achievable with Formlabs high resolution SLA printers, the load-bearing outer braids of the line can be separated from the fragile strand of fiber. Using injected epoxy, the braided line is glued to a 3D printed fixture, and the fiber optic is routed into a metal branching tube that can connect to a computer to receive the information carried by the fiber optic cable.
SLA printed parts are used as mechanical terminations for "fiber line" or FOFL), separating the load-bearing outer braid from the fragile fiber optic core.
"This type of mount is very strong, holding at least 100 kilograms. We have applied for a patent and also made it publicly available. Without 3D printing, in a normal manufacturing process, they could cost $3,000 or $4,000" , - says Phillips . "It's the combination of rapid prototyping techniques like Formlabs printers and the new fiber optic line that allows new ideas like this to be realized" .
Lower Cost 3D Printed Boot Seals
Prior to 3D printing, these tools were expensive to develop, deterring researchers from making necessary design changes and preventing underfunded programs from developing them at all. The Underwater Robotics and Imaging Lab is part of the global "deep and cheap" movement, an effort to democratize science and open access to these technologies to better understand the oceans around us.
"I started 3D printing end caps that had O-rings built into them, and it worked. If you print on a machine, it costs hundreds or even thousands of dollars, and the drawings must be accurate. With these printers, I can print three or four and get a perfect fit for about $50 per material," says Phillips.
The lab team didn't just print the final parts; using Clear Resin, they have developed a successful workflow for printing forms. The end result is an optimized way to quickly splice submarine cables using printed forms.
Versatile applications
At Phillips, Formlabs printers are used for prototyping, end product creation, quick tooling, workpieces and fixtures, and even medical devices. Even in a small research lab, the innovative spirit of Phillips and his students is constantly expanding the possibilities of using printers.
During COVID-19, Phillips and his students realized they had an opportunity to make a real difference in the fight against the pandemic in Rhode Island. Through extensive testing and exhaustive research, the lab was able to publish the results of the chemical degassing of Formlabs Surgical Guide Resin for use in 3D printed ventilator parts. They accomplished the feat of not only scientific publication, but also applied for FDA approval and emergency use authorization.
“There was a huge effort during the pandemic and we wanted to really get involved and help where we could make the most difference. With the quality of the Formlabs printers and the availability of Surgical Guide Resin, we've been able to contribute at a higher level.
” says Phillips.
Y-piece ventilator parts, developed in collaboration with researchers at Brown University and Rhode Island Hospital, are 3D printed using Surgical Guide resin in the early stages of the COVID-19 pandemic.
Depth democratization
The lower manufacturing cost of these parts not only benefits the lab's budget, but also means that learning (and the inevitable stage of failure when trying new ideas) does not deprive students of access to these machines. Senior students designing parts for the first time can access the technology and learn how to 3D print without fear of making any mistakes that cost precious resources.
URI second year students have the opportunity to design and 3D print molding cases each year, contributing to research while gaining valuable new CAD and 3D printing skills. "Before the advent of 3D printers, students didn't design or make their own underwater housings until they were grad students or worked in industry and couldn't get trained because cost and access were just limited.
