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3D printer dispenser
AA/ AAA Battery Dispenser 3D Printed Battery Organizer
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5 out of 5 starsfrom €12.14
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Select a style AA Dispenser (€14.70) AAA Dispenser (€12.14) AA + AAA Dispensers (€25.55)
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Star Seller. This seller consistently earned 5-star reviews, shipped on time, and replied quickly to any messages they received.
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Listed on Jun 29, 2022
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Markforged 3D Printed Part: Spool Dispenser
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Here at Markforged, we’re constantly subjecting our printers to a barrage of diverse testing.
Our goal is torture our printers in house harder than our most demanding customers. One of the ways we find new and complicated geometries to test is by integrating industrial strength 3D printing extensively in our in-house operations. Whether it’s rapidly iterated test fixtures for our hardware R&D, or jigs for our in-house Production Operations team, Mark One and Mark Two printers are constantly relied upon to enable quick, continuous innovation and improvement for all of our company operations. Why do we place such a high value as a company on 3D printed parts? Beyond the immediate benefits of continually performing long-term usage testing on our printers, this company culture allows us to experience the perspective of our current customers. Just as importantly, it allows us to demonstrate the value of continuous improvement that a high strength 3D printed part can bring to a company making physical products.
A great example of how we’ve put these principles to work currently lives in our material production department.
Markforged’s highly engineered composite filaments are produced in-house on our custom manufacturing line on large format reservoir spools. The carbon fiber, Kevlar, or fiberglass filaments are then spooled in smaller volumes on our end-use spools that our customers use every day. With thousands of spools passing through manufacturing every month, any inefficiencies in processing time per spool quickly adds up to huge losses in potential productivity. Two of our operations techinicians, Jazmin and Faisal, were quick to note that the process of individually picking empty spools for composite fiber filling from the supply carton they arrive in was slow and wasteful, but the current workflow of stacking large piles of spools haphazardly on the workbench was disorganized and messy. Since all Markforged employees (not just our Engineering department) have access to our in-house 3D printer farm, they knew they had the tools to innovate on a solution.
Jazmin designed an efficient workflow and concept for ideal dispensing functionality in the form of a 3D printed spool dispenser mouth that used a length of polycarbonate tube as a spool magazine, and then collaborated with Faisal to leverage his 3D modeling skills to bring physical form to her solution.
Faisal’s design showcases his personal flair for adding features that end up providing indispensable functionality beyond the initial intended use case – here he added mounting points for zip-ties near the base of the dispenser that we later found useful when we repurposed some extra dispenser prints for use elsewhere in the company.
This phase of the design also highlighted another strength of 3D printing, fast iteration times. After the first prototype was produced, supplier tolerance variation in the outer diameter of the polycarbonate tube required a slight modification of the dispenser geometry. Unlike with most other manufacturing processes, by 3D printing the piece, Faisal was able to quickly modify the 3D model in Solidworks, import a new STL file into Eiger, and send the part to the printer. No personnel were needed to monitor the progress of the part manufacture, as is necessary with one-off CNC machining, and the new dispenser was ready to be installed on the production line the next day.
This type of continuous innovation and improvement has long been solely the domain of software engineers, as the realities of manufacturing physical parts have historically relegated engineers and designers to much slower, longer lead time design processes with a much higher barrier to actually testing out possible solution implementations. The advent of widespread 3D printing capabilities has begun to change this to some degree, but the lack of strength and function associated with most affordable 3D printers has still limited the ability of hardware teams to actually prototype parts comparable with the higher strength, longer lead time aluminum versions they often rely on for functional development purposes. Markforged printers change everything about this design paradigm – they completely revolutionize the way that you can think about prototyping, empowering your entire team to continuously contribute to the improved functioning of your company.
All of the blogs and the information contained within those blogs are copyright by Markforged, Inc. and may not be copied, modified, or adopted in any way without our written permission. Our blogs may contain our service marks or trademarks, as well as of those our affiliates. Your use of our blogs does not constitute any right or license for you to use our service marks or trademarks without our prior permission. Markforged Information provided in our blogs should not be considered professional advice. We are under no obligation to update or revise blogs based on new information, subsequent events, or otherwise.
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My 3D Printed Marble Machine / Sudo Null IT News
I'm trying to master 3D printing - I got a FLSUN-QQ printer, I installed 3D editors for myself: Fusion 360, Blender, I'm trying Compass 3D. Something works, something doesn't work. This Marble Machine on video is one of my first successful projects. The project, although visually not large, but its implementation required considerable effort from me. I also had to master 3D editors and invent mechanics and set up and debug this device.
Next, I will tell you what parts this machine consists of.
The most important part is, of course, the upward spiral. She had the most problems. I have designed many different types of coils and many versions have been rejected for either aesthetic or technical reasons. Yes, even due to the fact that the promised printing time was too long, I had to give up various ideas ... I wanted to get something airy, beautiful and so that I could print on my printer in a reasonable time.
The final model of the coil looks like this:
The coil installed on the machine:
There were several problems with the coil. First, it was necessary to decide what profile the spiral should have. Several options were considered. The simplest of them can be schematically presented in a section like this:
This is the case - in the first version, if the border near the shelf protrudes strongly, then the printer software, and I use Ultimaker Cura, will make me supports that will need to be removed manually, and then if it is poorly cleaned, then they will also prevent the ball from rolling.
If we take the second option with a thickening shelf, so that the ball seems to roll down to the plane of the spiral, then there will definitely not be any supports, but it is not known how well the ball will be held. I even printed a fragment of such a spiral to see how it would be in real life. But all the same, the third option won, an intermediate one, with a border / curb in the form of a corner. If it is not made very large, then the printer manages to print this without support.
Another problem with the spiral printing was purely manufacturing. I have never been able to print it in its entirety. I'm not sure what the reason is - it is possible that such a figure has too much cooling surface. By the time the extruder passes through the entire trajectory, part of the model has probably already cooled down significantly. But these are just my guesses. Moreover, which is strange, at the very table, which is heated, the printing is normal, but the printing rises higher and plastic delaminations appear.
At the same time, the printing of small test models occurred without problems. It’s not very pleasant when I started typing and everything seems to be going well for an hour. You leave to print for the whole day (another 13 hours of printing) until you leave for work. You come home, the printing is over, but it turned out to be a marriage - the model has stratified on the upper layers. I even thought about printing a spiral in sectors, and then gluing it together. However, later I managed to pick up the print modes, temperature and speed, when the print went completely from start to finish with an acceptable result. There were a few toffee hairs left, it would be necessary to clean them all, but then I was a little too lazy.
Another question was how to make the spiral rotate. As you can see, a gear goes along the edge of the spiral. To be honest, I didn't really expect it. I thought the main thing was to make teeth on the edge of the spiral, and then somehow give rotation from a toy collector engine with another gear.
This idea didn't work for me for several reasons. Firstly, the gears still need to be pre-calculated. Secondly, the idea was almost implemented like this:
But then it turned out that it was not easy to regulate the speed of the collector engine, then, the shaft of the toy engine backlashed quite a lot, and it made an unpleasant noise in operation. In general, this idea was abandoned. I took a 28BYj-48 stepper motor with a motor driver:
Step control made on Verilog in the FPGA board Mars rover:
If anyone is interested in how to program stepper motor control on Verilog, then this is the topic of a separate article. Now the speed can be easily programmed and runs almost silently. Only now it is a pity that when printing a spiral, a significant amount of printing time was spent on printing the gear. I think without it I would have saved 2 hours of printing.
So, the 28BYj-48 stepper motor is installed in a special rack. The rack model I designed looks like this:
In the car, the stand with the engine looks like this:
but at least save a little printing time.
Although, what a time saving there is, if you remember that the first version of the rack, which was supposed to be used in the version with a collector motor, was like this:
The problem with this rack is a large play of the spiral shaft. Well, again, as I already wrote, the option with a commutator motor and a gear did not work, so I had to make a new rack for a stepper motor.
It just so happens that I printed almost every detail at least twice. The first option, even if almost a worker had to be rejected often. Here, for example, is the “snake” detail:
It would seem that this might not be the case, but it turned out that when the ball descends in a straight line, it accelerates decently and flies out due to centrifugal force. I had the first turn to increase the height of the side. Well, at the same time, when re-printing, I reduced the height of the print layer. Let it print longer and better. Here is the "snake" installed in the car:
The project also required buns for attaching M4 studs:
These buns are attached to the board with double-sided tape - it turned out pretty strong.
It's funny that I printed the quadruple buns twice. At first I printed it with black plastic and with a little infill. The model stuck so tightly to the 3D printer table that while tearing it off, it bent a little. And that's all - it does not stand exactly on the table. But it’s good that I reprinted it, it seems to me that combining white and black was a good idea.
Gutters:
Single turn:
Well, a number of minor details. In general, I had to print and reprint a lot. However, I'm glad I completed this project. Perhaps after some time I will be able to expand this Marble Machine, add new lifts and slopes, because there is still room on the board on the right for the next machine.
I was thinking of posting the sources of my models, but then I decided that there was no point in doing so, because each Marble Machine is, first of all, a fantasy of its creator. It is unlikely that anyone will want to repeat everything exactly as it is here.
