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Its also very helpful to use the revolve tool to create a chamfer at the end of the thread.

Fusion360 has one of the most comprehensive actually modeled threats capabilities (and you can get Fusion360 for free). Its not perfect, I still have threads I need now and then that are not in Fusion... But its darn easy when they are there. Some calipers and decent CAD will get you there.

Yeah, I don't know if they have pointed a student at it yet, but CF filled filaments get much closer to homogeneous material properties, due to their much higher surface area at the contact area. Like I said, know your process and how to use it. I see far too many people using FDM when they...

"poor interlayer bonding" is basically marketing from SLS manufacturers. Who are jelly about FDM printing in anything that melts and doing it in a fraction of the lead time for a fraction of the cost. Can FDM delaminate? Yes, if you are doing it wrong (like printing with ABS, which is a garbage...

SLS nylon is generally more brittle than FDM. Plus there are far fewer material options... stronger? maybe, depends what you mean by stronger. And SLS still has issues with 'micro bubbles' encapsulated within the part. (SLS and sintering processes in general cannot produce fully dense parts...

To echo Esprise, what is going to be your normal routine? I for one like to rent a wetsuit (even though I will clearly die from the creaping crud or whatever I catch from it), because I then don't have to deal with washing, drying or even transporting that wetsuit. I might reconsider if I ever...

Absolutely. I'm not an expert, or even qualified for deep diving, let alone very deep... But one advantage of Hydrogen that I can see is that it has a very low density, similar to that of Helium. And I have seen people mention that at significant depth that gas density is a significant factor...

Lets do the full numbers: 1kg of water (because I don't have solubility numbers for gases in beer) 0.0015g of dissolved He. He is 4g/mol. Volume of 1 mol of He at standard temp and pressure: 22 cm³ Or, 1kg of water could contain 0.00825 cm³ of He. 15g of dissolved CO₂ CO₂ is 44g/mol. Volume of...

Angelo understates the problem... Helium has the lowest water solubility of any single gas. CO2 at standard temp and pressure is roughly 1.5 grams per Kg of water. Helium is 1.5 milligrams per Kg. So lower by a factor of 1000. I suspect that 200 BAR isn't even close to enough! That said...

That's actually a fascinating link, as it sounds like the hydrogen was only a contributing factor, with carbon monoxide causing significant cracking when stored in steel at pressure. But it also is interesting that even though the cylinder contained a high ratio of hydrogen and violently...

Its far from unique to northern CA... I'm from the east coast of England, where we often get very similar drownings... And that's in the North Sea, a place with a reputation for being cold and rough and dangerous. Heck, the waterways were I grew up have almost annual drownings of drunk tourists...

Well, I've found some parts of this thread more helpful than others... :wink: Added those Aqua Lung bands to my Christmas list!

Interesting. It would give you the option to have the DC in either landscape or portrait. You could even hang it from a d-ring like a nurses watch. But I suspect that its not worth the trouble to do that. As you'll need to accommodate the UI in either orientation, that's a lot of extra work for...

Good question. They just came in a box marked UV... Not kidding, no idea what spec. Mostly we would use 'UV' florescent tubes, often with 'UV cannons'. And moving lights often have a colour filter that is a UV pass-through... Although I stopped that stuff about 10 years ago, just before...

Very interesting. I suspect because my background is stage lighting, where we generally are looking for fluorescence ONLY (blacklight scenes). If we used blue light you would be able to see the performers, not just the puppets. Plus the materials I'm used to getting to fluoresce are all man...

Slotted screws belong in the dustbin of history. The screen to device size ratio isn't great. The crown looks hideous, its going to jam into the back of your wrist at every opportunity, get seaweed collecting around it and if its supposed to be a control... well, its going to be hard to...

Errrrr... kinda yes, but also no. Colour LED's (red, green, blue etc) are the colour they are due to the material the emitter is made from and they emit moncromatic light (unlike a tungsten light source with a filter, LED's are only producing a pure narrow frequency of light). This is why RGB...

Ok... so its not a rebreather (according to the video captions) . Except it does what rebreathers do, being a closed circuit breathing device. Good to see youtubers being as informed as we expect. And you don't need a BC, because the helmet is a BC. Ok... I'm all for startups trying new...

I work in product development, and in startups, so I have a mixed view... On the one hand, there are often design requirements that we don't know about or don't agree with. Ones that the product fits really well, and even if we don't agree with the design intent, it may well meet the...

Given Musk's net worth I doubt the diver had any trouble getting a good lawyer to take it on contingency. Especially as there's no way that this doesn't cost Musk lots of money.