Відео

Nice

MEK and acetone are close chemical relatives. By blending the two the makers of solvent cements can control the drying rate. Acetone evaporates much faster than MEK does.

Great video! Adhesives have long fascinated me. Gluing is the study of a lifetime. Despite all the science one can bring to bear, gluing remains an art. Surface preparation and joint design are just as important as adhesive selection. Nylon, polyethylene, polypropylene, and PTFE (Teflon) are characterized as having low surface energy, which is why they are not easily glued.

just buy a new fiber cutter, that seems the problem

The more people depend on one product, like the 708, the more expensive that item gets... Supply a demand... Between the numerous action sports, whose equipment depends on the 708, and DIY tool/jig builders, this class of bearings has gotten increasingly cost prohibitive. An 8 pack of bearings that once cost $20 may not cost over well over $100, depending on grade.

Don’t buy the cheapest shit

Machinist by trade here, If you don't understand the video, You're not the demographic.

Where did you get that vice that fits in the 123 blocks?

Another thing that is possible is borrowing a clearance. This actually often makes precision fits work interestingly when 3d printing. I unintentionally made a gearbox that only worked when not completely screwed together. If screwed together it bound up. Turns out the play in the self-threading M2 socket head screws was allowing the gearbox to work.

What? We’ve had carbide tools in the UK and Australia for years. You lot are weird

This guy is a complete dumb shit. Carbide has been available to the consumer for years.

No

Cut some cast iron

What is that last cutter called? I want one. 😉

The block of wood when you drill it is to let you cut the metal instead of bending the metal. Also never hold something in your hand, or crotch, while you drill 😝

Wait till you hear about CBN

At about 33 minutes you mention non flexible tape. It looks like a dark blue painters tape. Is that what it was? I ask because I never realized it might be that resistant to stretching or deforming. I never thought standard masking tape was very dimensionally stable and assumed the two were pretty much the same. Great video!

Haha, mate, we had carbide-tipped drill bits and saw blades when I was growing up in super-impoverished Poland in the late 80's. So what gives? :D

That's exactly how it works. I used to spice fiber in Toronto

37:07 getting the backing off the tape: cut the needed bit almost off the rol, then tear it loose. The backing will separate because of the local stretching, facilitating peel off.

This channel is awesome. "Borrow a Tolerance" made it's way to my algorithm and I've been glued to the screen since

My god does the baby talk get old fast...

Never been hard to find😂

I didn't think about the binder clip din rails

If you use the proper blade on the proper material you wont hvae any issues.

HSS requires less cutting speed.

Carnide is no match for a coat of rust in bare steel though.

I borrowed my tolerance for bullshit from another short so that this one could make sense.

So how does ALL that information be carried in that single cable and make sense on my screen??

Looks like skateboard wheel bearings.

28:00 total internal reflection TIR is what we’re aiming for :)

just 3d print

Nice tutorial on how to make cyclotrimethylene-trinitramine explosives

just what i needed haha

nice! i have a few of these, but there are many new things here for me

Just go to Fastenal or Airgas

The innermost fiber core that transmits the data is 9μm, and the cladding is padding that to 125μm, so ⅛th of a mm.

Your 5Why will need to make sense going both forwards and backwards. I would suggest you do it over. I would not pass this as the rout cause was not foubd/articulated.

I follow as far as 2 points define an axis, and 3 points support a sphere. Where I get lost is how that enables you to get higher precision. My guess is that you're just averaging error over distance, but that doesn't eliminate the high spots which are what contact your sphere. And your distances are quite small, so you can't guarantee to have 3 points that are on the positive extreme of your error. I feel like you jumped a couple steps, but they were important for getting between point a, and point b.

I haven't seen anyone else (on UA-cam, and tbh I haven't looked very hard) cover this idea you call "borrowing a tolerance" before I'm sure you're not the first person to think of this, but it's a damn clever idea and makes sense to me. Though I also don't think you're doing a great job of explaining to someone who isn't already familiar with the concepts of 3d modelling, manufacture, precision vs accuracy vs repeatability, etc, it made enough sense for me. Perhaps think of a colourful everyday metaphor to help demonstrate the principle? Overall I rate this a 4/5, and my own personal "hooray"

5:15 kapton tape is just insane, I've used it very reliably in environments with peak temperatures around 300°C

"I don't expect people to watch this video all the way through" - challenge accepted.

Buen Camino

I'm actually surprised the glue didn't fail it's weld. I didn't go through proper sources, but according to google AI "PVC glue can't be used to join ABS and PVC pipes." but boy you sure showed it. Or maybe that's 3d gloop or something?

3M have some decent videos going through the failure modes (cohesive and adhesive failure) and surface prep, etc which would be useful. Also, one advantage of modified silanes of the "no more nails" type is that they do adhere to more surfaces than is possible with most others.

Would you happen to have the model of those ball bearings? They look amazing.

Oooh waaauw awesome !

Time-of-flight. Speed of light, multiplied by the time it takes to give a certain "echo" strength. The time-axis corresponds to the distance-axis (horizontal axis) of the 'graph". Remember, for a round trip, you need to go AND come, so in one nanosecond, the pulse will echo from a defect located 150mm downstream (not 300mm) --> 150 going + 150 coming is 300mm in total.

Needs better explanation. How are rivets threaded?

One suggestion: Once you hear an explanation from an expert like Peter, end-to-end, even after having recorded it, redo the whole interview from the start. With the layer-1 knowledge you just gleaned, you'll tend to ask a whole new set of questions, that shall likely be more insightful. For example, knowing that there are "motors" before the fibers get clamped into the fusion-welder will might trigger you to ask the question "Hey, is that how the apparent "gap" between the fiber-ends gets automagically "closed" before the arc zaps it? Cool vid. 800 bucks on ally-hexpres, if you are interested ;)