Recipe for speed - Fast 3D printer Motion system

In this one I give you all my tricks to be able to reach crazy motion system speed.

00:00 - Intro
02:15 - #1 Light weight moving parts
03:00 - #2 Power ! AWD with LDO super power motors
05:18 - #3 External TMC 5160 Pro drivers
07:54 - #5 Cooling motors (Watercooling)
#4 missing ? Yeah ..uh ?? sorry I don't know how to count anymore
09:22 - #6 48V powe supply
10:59 - #7 Tuning drivers
14:24 - #8 Processing power (MCU)
18:30 - #9 Smooth MGN rails (lubing and preload)
21:06 - #10 Balls ! :P
22:56 - conclusion

Eddie The Engineer : @eddietheengineer
(complete part list can be found on the BOM list on github link below)

[eddietheengineer]

Thanks for the shoutout! Passing 3000mm/s is such a fun milestone 😄 I am doing some more research on driver tuning and will have a video out in the future!

[GatlingNG]

Every technological hobbyist-specialist should have overviews like this. Great information in a super convenient format. Thanks !

[jeremyglover]

Back EMF is what you are talking about in the motor current.

'A motor has coils turning inside magnetic fields, and a coil turning inside a magnetic field induces an emf. This emf, known as the back emf, acts against the applied voltage that's causing the motor to spin in the first place, and reduces the current flowing through the coils of the motor.'

We go to great lengths to minimize/cancel this in the coils in speaker drivers.

[jeremyglover]

yes, to expand on the 12v vs 5v drive. your mosfet is a switch that is controlled/opened by the gate voltage (measured from Gate to source, or 'VGS Voltage from Gate to Source) to allow current to flow from drain to source (well, the electron holes will flow from source to drain) when you switch with 12V, the gate is biased on harder, so in effect the channel is opened wider so more current can flow. This means the drain to source channel presents a lower resistance, meaning it creates less losses (seen as heat) and a more linear transfer characteristic. with 5v operation, the channel is constricted, creating higher resistance and you can use ohms law to calculate how much extra heat (for the same load current) needs to be dissipated in the mosfet when it isnt completely open.

[SianaGearz]

Thanks for pushing the limits. It might be seen as a "useless" endeavour just like space exploration and F1 racing, but i do expect that insight that gets generated in the process is transferred into better faster more reliable prints for everybody eventually.

[christoskaragiannis]

My routine: I see Vez uploads, i like the video, then I watch it :D

[hereisanaccount]

Really glad to see you doing this longer format. I certainly learned a few things. You answered questions I didn't know I had. Looking forward to whatever comes next.

[rexxx]

I used super lube for 3-4 years now on printers its great I may have even shared this with you way back when, on heated chambers above 75C you will need krytox 200 series grease but skate board butter works good to for those without a chamber or it will run from the heat and just dry up cheers Great job explaining the deal on mach Chiken speeds and control keep it up!

[TheNamelessOne]

Last part was the most important.
I used to design and build fast robot gantry that grabs, moves and drops 100kg of load at 2 m/s with 5K acceleration. I used largest NEMA34 servo-stepper motors at 80V power supply, even had to make separate braking circut to burn deceleration energy into heat. When this beast accelerated it was really scary, although i managed not to crash it at all.

[ldomotors]

Haha, I love the idea to get some alcohol to calm down your heart beat from the high speed running. Let's GO VzBot!

[Ttenkampf]

you pronounced cohones in pure Tejano style man, great guide btw...I will be using this info on my VzRat hybrid

[eugened]

Thank you for walking through your process! Rum and PTFE!

[dad]

Should try a build with a duet3 6hc, the driver are TMC 5160 and he mono support 48v, and up to 6 amp for steppers motor, my board an older version so him stuck at 32v max

[umitbaba]

Insane! I have a quastion please. For safety, using closed loop circuit in addition to prevent lose step or crash would it work?

[tadhgd]

I've been running my 2804s on 2.382A for a couple hundred hours (specific current because of tmc tuning) inside a 90+C chamber and they're still working great. when I talked to Jason he said 2.8A even should work

[HardCoil]

Thanks for the part about the oil. I have been thinking WAY to much about this, since it's wrong on paper, but if it works in you application, it'll be fine for just about everybody else :)

[tsstn]

Hey VEZ thanks for showing us all this awesome work you have been doing.
Also, just to be helpful and not intended to be rude in any way. Oscilloscope is pronounced -- AH SILL OH SCOPE
You are not the first to wonder how to pronounce that correctly and won't be the last.

[kilianlindlbauer]

247 printing had the same issue with mcu processing speed. Albert was using a manta e3 ez with a stm32gb0 or gb1 (cant remember) like all the other manta boards. It has only 64 MHz. This mcu is also used in canbus boards and other low duty boards like the skr e3 series. Even though the processing speed doesn't matter for klipper as there are no calculations to do but you still need a fast mcu for the step pulses. The super 8 pro uses most likely a stm32h7xx series mcu like the skr3 (i have a skr3, thats why i know that) and has 550MHz.
About the grease, thats my experience: i first cleaned the disassembled rail (even the balls where in their own container), cleaned with brake cleaner, so it really gets rid of any dirt or leftover machining oils and reassembled with ptfe grease. I lather got skipped steps while doing the z tilt with 48mm moons at 1, 4 amps. Redid the same process but used regular bearing grease that i use for wheel bearing in a car (the translucent yellow stuff) and had 0 issues since then. Some have great success with ptfe lubricants, others like me don't, so it really a matter of luck i guess

[Dave-wvvc]

Vez I'd love to see how fast you can do a quality benchy run. Thanks for the video!

[Andre_M_D]

Nice. Learned a lot. Merci cheers from Canada 🇨🇦