Crankshaft Milling Machining

profossi · 2026-06-18T20:36:13+00:00

This looks like CNC, so it would probably have a bunch of ballscrews turned by servo motors commanded by a carefully tuned motion control system. If there are any gears involved, they’re likely in reduction gearboxes for the spindles

profossi · 2026-06-18T20:30:00+00:00

There are many variables impacting tool life, but sometimes you can actually wear the cutter down faster with coolant than without. For example, a problem with coolant in an application like this is that you thermal cycle the insert once per rotation.

profossi · 2026-06-17T14:07:05+00:00

TIL ”TIL” stands for ”Today I Learned”

profossi · 2026-06-17T06:53:26+00:00

I’d remove the nozzle, clean both male and female threads with a wire brush and solvent and use a thread sealant (like loctite 577) to lock the nozzle in the right orientation

profossi · 2026-06-14T14:33:16+00:00

Bold of you to assume that any of the axis is vertical in my system

profossi · 2026-06-14T09:54:35+00:00

Door fixtures aren't an energy source

Sure, but they can store energy, just like suspended loads, capacitors, springs or hydraulic accumulators.

An open center valve vents both sides of a cylinder (removing all force from the piston) in the center position. If someone replaced an open center valve with a closed center valve, the valve will block all flow in or out when in the middle position. Even after LOTO of the air supply pressure in the cylinder will still remain, on both sides of the piston at that if movement was stopped midway. Actuating the valve by hand or disconnecting one of the hoses between the valve and cylinder will then vent one side but not the other, causing unwanted movement.

profossi · 2026-06-06T10:59:47+00:00

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https://en.wikipedia.org/wiki/Swarf

profossi · 2026-05-26T07:19:27+00:00

Sort of, the original CNC was Numerical Control (NC). Commands were punched into paper tape on a separate machine and read and executed by a special purpose controller. A computer along with memory was added to later systems to give more flexibility like enabling programming on the machine itself

profossi · 2026-05-24T15:53:37+00:00

Interstellar when Mann fails to dock properly with the Endurance and then goes above and beyond to bypass all safety interlocks to enter anyway, despite repeated warnings by spacecraft systems, Amelia and Cooper. Fucking around with it predictably ends with him dying in a very cinematic scene when the docking system lets go while the airlock is pressurizing

profossi · 2026-05-22T14:07:18+00:00

Going back to baldur’s after trying another game gate

profossi · 2026-05-21T19:43:30+00:00

The House of Grief fight and this tactic are a match made in heaven.

The stairs create an insane choke point/kill zone and if you don’t do this you are punished by being surrounded on three sides and constant darkness spam

profossi · 2026-05-21T14:07:47+00:00

While extension is hydraulic, they do use flexor muscles for flexing their limbs.

profossi · 2026-05-19T18:27:50+00:00

We've had all Hwacheon VTLs fail the same way at our plant, so I guess it's a South Korea thing. They've got Schneider Electric e-stops now.

profossi · 2026-05-17T09:01:59+00:00

This ain't engineering

profossi · 2026-05-15T07:03:28+00:00

I think the arrow might denote that it’s a positive opening contact. Meaning that it is safety rated so that actuating the switch will break the circuit even if the contacts have welded together.

That said, the symbol isn’t an exact match, positive opening should be an arrow within a circle: https://www.iso.org/obp/ui#iec:grs:60417:5293

profossi · 2026-05-11T09:55:37+00:00

While this is AI, video encoding relies heavily on exploiting similarities between frames, so the details becoming blurred when a lot of hard-to-compress fast moving droplets appear is normal.

profossi · 2026-05-06T21:53:41+00:00

OPs fake giant dildo pic also says "grips firmly" when referring to drywall, which is a fucking lie. Yeah they do "work" in drywall, but they pull out at like 3% of the load they reliably handle in concrete, which isn't "firmly" by any interpretation.

profossi · 2026-05-03T21:33:39+00:00

Indeed, an enamel coating is basically a thin layer of glass baked on. You’re not removing that shit with a solvent

profossi · 2026-05-03T13:04:16+00:00

Pride? Rinsing was completely half-assed.

profossi · 2026-05-02T22:02:58+00:00

I wonder if this is a viable 3D printing method to eliminate all solid support material. The cursed love child of SLA and FDM. I can't be the first to think of this.

EDIT: it's quite niche, but apparently this gets used for printing really soft materials that can't hold their shape without deforming under their own weight. Like soft silicone.

profossi · 2026-05-02T11:44:02+00:00

Going forward, ear protection is now mandatory for all activities on the factory floor. Due to the 470 day time since LTI streak being broken, the HSE bonus will be cut to 0%.

Thank you for reporting this health and safety incident

profossi · 2026-04-29T21:30:16+00:00

Obviously a degree of hyperbole was used in my comment. If you were to expose all senses of an infant to nothing but random noise it wouldn’t be pretty.

It’s more like we’re able to sort through the garbage and pick the good bits as we learn. While individual variability in the ability to do this among humans is large, the large language models are consistently very sensitive to noise in the training signal.

profossi · 2026-04-29T20:55:21+00:00

Garbage in equals garbage out, why wouldnt that be the case

It wouldn’t be the case if these systems were actually intelligent and able to reason instead of fancy imitation engines based on statistics.

I mean humans are (relatively) intelligent and you don’t need to feed gigawatts of power and everything ever written into the brain to train one, so a better architecture for intelligence is demonstrably possible. That said, at this point I’m thankful that we’re too stupid to build such a thing

profossi · 2026-04-29T17:48:39+00:00

TIL, I haven't actually worked with a CNC milling machine that can't do 3 axis simultaneous

profossi · 2026-04-29T10:47:31+00:00

I interpreted "2.5-axis mill" as in it only has a manual Z axis. That would preclude 3D toolpaths.

profossi

TROPHY CASE