lylecheatham

6 ms·

1.
by lylecheatham 4y ago
On the legalization front, Cato is definitely on the libertarian end of the spectrum of conservative think tanks, so that does line up
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by lylecheatham 4y ago
For context, this article is an opinion piece co-authored by: Jeffrey A. Singer - A senior fellow at the Cato institute, a republican think tank that receives much of its funding from large republican donors/foundations and corporate d
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by lylecheatham 4y ago
Except that the author of ruamel.yaml: refuses to use git [0] refuses to take community submissions (except through Stack Overflow? Seems like a misuse of SO) [1] and refuses to implement .dumps() [2]. He is difficult to work with, and any
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by lylecheatham 5y ago
Ethernet usually has magnetic isolation through tiny transformers (oftentimes included inside the ethernet PHY IC) to avoid any issues with different ground potentials and such.
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by lylecheatham 5y ago
I still think Tile lost out on a gigantic market by not making it easier for hardware manufacturers to integrate into their ecosystem. They should have been practically begging oems to embed it.
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by lylecheatham 6y ago
Aluminum Nitride actually has a favorable formation so they have to use much less friendly gasses like Sulfur Hexaflouride.
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by lylecheatham 6y ago
I mean most GIS software is pretty aware of precision models. Take GEOS for example, it's got a variety of ways to specify the precision in number of decimal places for a geometry. It still uses doubles underneath, but that's to a
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by lylecheatham 6y ago
I really think #EndPatents is a very software oriented view of tech. In the physical engineering space patents are the only thing that allows a small company to actually design, manufacture and sell a product before a larger company can jus
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by lylecheatham 6y ago
Yeah I think it's just how news media works I guess. Especially since 3D printing is a cool technology that hasn't quite hit it's stride yet, people are want to see how it's going to change things. IM has been the same o
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by lylecheatham 6y ago
I'd say the real hype cycle for FDM was in 2013-2015, as evidenced by the SSYS stock price [1] (many other 3D printing companies have similar curves). I think we're now on the tail end of the hype cycle graph and people are starti
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by lylecheatham 6y ago
They are pretty fundamentally slow because of the constraints from the melt pool. Because you are trying to locally melt the material (lots of energy) and then immediately solidify it, you pretty much have to use a melt pool under a certain
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by lylecheatham 6y ago
Minutes is a stretch. It will likely take multiple tools and setups to make a mold, and even more if you're starting from a billet that needs facing etc.
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by lylecheatham 6y ago
Apple actually gets a decent amount of coverage for their very impressive injection moldings. Most advancements in IM today are not in the ability to make complex parts, but more in the ability to make them pretty. Apple makes many parts wi
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by lylecheatham 6y ago
Plastic scrap value is near zero [1] when compared to Aluminum [1] https://webcache.googleusercontent.com/search?q=cache:fZ0f_O...
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by lylecheatham 6y ago
Yeah the plastic isn't recyclable, but e-waste is full of precious metals and structural metals like aluminum that can easily be recycled.
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by lylecheatham 6y ago
You'd be surprised actually! Prusa uses no gearing between the motor and the primary drive gear and it's a 200 step/rev NEMA 17. You can transmit high frequencies quite easily, and I've actually seen bad stepper motors w
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by lylecheatham 6y ago
I'm pretty sure it's actually just a continuous under extrusion. It becomes periodic in nature because material gathers under the nozzle and then it hits the blob from the previous layer and gets pulled off. It's a similar ef
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by lylecheatham 7y ago
You're talking about a $40 tool just to flash the storage vs a part (micro SD adapter) that they give you with the SD card for free because it's so cheap. Also doing a quick survey for the rated cycle counts on M.2 vs SD card slot
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by lylecheatham 7y ago
If they didn't use SD cards, the storage would be more reliable, but users would spend a lot more time fixing bricked boards. By allowing for removeable storage (in a format that can be plugged into any other computer natively) they so
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by lylecheatham 7y ago
> People limping might serve as example that a 'state of the art, well trained neural net' can't achieve good motion with less than perfect hardware. I think that people limping has more to do with avoiding pain than damag
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by lylecheatham 9y ago
Desktop Metal | Embedded Software Engineer | Boston | Full-Time https://www.desktopmetal.com Desktop Metal is revolutionizing 3D printing of metal parts. Our printer’s robust build processes create complex parts beautifully at
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by lylecheatham 9y ago
They're actually using servo motors! They refer to it as a "servo-driven parallel gantry system" in the abstract.
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by lylecheatham 9y ago
Checkout the second to last page for pictures: https://arxiv.org/abs/1709.05918 I think you bring up a good point about the lack of precision at high speed. I think the next big thing in this industry is going to be d
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by lylecheatham 9y ago
> Although, I disagree that a screw drive is needed. I use hobbed gearwheel drive on my extruders and rarely is the issue the hobb slipping. Typically, it is the motor stalling instead. Although that may be the problem on your printer, i
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by lylecheatham 9y ago
It's actually just a standard 4-40 thread cut into the filament. They use rollers to prevent rotation of the thread when cutting the threads into the filament, and then when they actually use the nut it's got enough thread engage
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by lylecheatham 9y ago
I wouldn't compare it to the screw drive they use on injection molding. Those are for pushing pellets and melted plastic, not for pushing a rod (or strand) of continuous plastic. This design uses threads on the outside of the filament