Joey Kaisner

future cyborg (hopefully)

[Joey Kaisner @joseph_kaisner]

NOW BUILDING: Legion Machines @ https://t.co/rf3rFuIpZH

[Joey Kaisner @joseph_kaisner]

https://t.co/cVpvykDHF3

[em m0shouris @emm0sh]

it works. notes:

i prototyped two versions simultaneously: a 1.6 mm thick simplified design (shown in the photo), and a 3.2 mm version (originally shown in the CAD models)

1.6 feels like the best choice -- a balance of weight/cost vs. local strength. i don't think global strength changes much between the two thicknesses

i knew torsional rigidity would be a challenge with the flexure-snap design, and it does lack here. this is because the required clearance to ensure the flexure-snap fit works allows the system to rotate torsionally and parallelogram

additionally, on this torsional rigidity: this parallelogramming would happen anyways even if the tolerances were nailed perfectly. this is a byproduct of "portal frames", i.e. frames that do not have bracing to resolve torsional/moment loads into axial forces acting on chords

torsional rigidity solutions:
a. create more moment resistance at the snap fits (i don't wanna, complicated/expensive)
b. add "webs" -- i have some crazy ideas for this
c. trick the snap fits into acting in a way to do A (frictional fit). we can figure out in 15 minutes of FEA if this will work prior to getting parts released
d. something crazy like long additional flexures that act like webs when they're pulled into place in opposing chords (unlikely to work if they ever need to act in compression due to buckling)

the center holes should be slots, but i wanted to prove the concept before going deeper into detail design

cost: i think it's less than equivalent 8020. i need to do a better study to prove it. but things can only get better from here with refinement

fun note: the snap fits were the main axial loading failure mode (buckling failure), but by looping them back on themselves i'm able to put them into tension, removing this failure type

finally: i think i'm keeping the flexure-snap fit locating design. it was a pain for install because I had too many of them, but they can work if i reduce the count. i will try reducing by 1/3

[Joey Kaisner @joseph_kaisner]

Why do so many start-ups show videos of robots folding clothes? That’s like the lowest ROI task imaginable as a starting point.

Wouldn’t it make more sense to target high-end tasks?

That’s what we are doing @legionmachines

[Deepanshu Rohilla @Deepans36819800]

Just make it exist first, you can make it good later

Crazy how customers were already loving the May version

[Horace Bastard Spellman @HoraceSpellman9]

Put a penny in the Dawkins Was Right jar please

[Joey Kaisner @joseph_kaisner]

@Itsalexaster Where’s the top from

[bailey ☆ ★ @couldawentpro]

tore my ACL jacking off

[Joey Kaisner @joseph_kaisner]

@austinxwalker Before you go to sleep, come up with an action plan for how to solve your greatest challenge that’s keeping you up. You don’t have to complete the action, just have the plan.

[Joey Kaisner @joseph_kaisner]

“Hot take: (most consensus bullshit in the galaxy)”

Many such posts these days

[Joey Kaisner @joseph_kaisner]

Building @legionmachines all weekend 🦅

[simp 4 satoshi @iamgingertrash]

The average American feels poorer in health, wealth, free time, and more isolated as the economy “grew”

You think showing them growth statistics from Datacenter buildout is going break their priors?

No;

The child rejected by the village will burn it down to feel its warmth

[Joey Kaisner @joseph_kaisner]

Wut

[Joey Kaisner @joseph_kaisner]

@suren_at Looks dope!

[Joey Kaisner @joseph_kaisner]

@suren_at Who’s the customer?

[Joey Kaisner @joseph_kaisner]

Saturday productivity unlocked

[Joey Kaisner @joseph_kaisner]

@simoarcher this looks phenomenal dude

[𝓐⭑ @ayogiovanna]

Neurodivergent screening:

“Do you struggle with wearing socks?”

Me: “No. I have developed a highly optimized sock system.”

The test: “That is… literally what we meant.”

Me: “No, you don’t understand. I am WINNING at socks.” 😭

[Boardy @boardyai]

Every startup founder and VC should visit a factory.

There’s no room for “move fast and break things” when a mistake means 400 parts are now scrap metal.

[Joey Kaisner @joseph_kaisner]

@candrewclark @Trace_Cohen Wdym? Not a fan of SAFEs?

[Sulla @spqr_sulla]

Ancient man went to work for Skunkworks in a fitted suit and tie, used slide rule and punch card to design the fastest plane ever built. You sign onto “Teams” with your ill-fitting stained Polo and husky khakis and complete yet another “meeting” for a project 13 years behind schedule. You are GAY!!!