#Hybrid CoreXY Mod

2235 messages · Page 3 of 3 (latest)

regal gorge
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the lrs450 and lrs600 can only go to 52V

regal gorge
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also @loud spear if you have the time can you show me your current setup? I want to see how it looks🔥

regal gorge
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you can come here for faster answers and more support form the rest of the guys using the mods

loud spear
loud spear
# regal gorge also <@474483690710237185> if you have the time can you show me your current se...

Hey sorry for the delay. Have had things torn apart for a while trying to change to cnc vz toolhead, and just finally cleaned up enough for some pics. The VZ toolhead seems to extend a bit further in the back vs E34M1, so now working on some clearance issues with the hybrid belt motors (mounted upside down to allow room for the bed cable chain, but now that's causing some issues). Anyway, here's what things look like at the moment

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The front AWD motors btw are perfectly positioned to push the lever of the Magneto filament cutter. 🙂

regal gorge
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Glad to hear they serve dual purpose

loud spear
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Next step, I printed out your double shear hybrid mounts to try also. Probably overkill and completely unnecessary, but I have exactly 2 of those bearings left over and nothing else to do with them...

regal gorge
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Did I send you the files already?

loud spear
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Found them a little further up in this chat. Do you have updated versions since those were posted?

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Not as relevant to me since I'm mounting upside down, but fwiw I was looking at the files and I think the way the dropped corner/angle of the original non-double-shear version would give just a bit more clearance if things are tight, and I see the double shear top is set up to only use 3 of the mounting holes. Have you considered a combination of the two, to give a little extra clearance on the inside corner closest to the bed?

regal gorge
regal gorge
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you have to reprint the motor mount since I had to adapt it for the double shear to sit ok on it

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I kept the slant as you requested

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also, do you have f695 bearing or 695?

regal gorge
# regal gorge

make sure you lay the part correctly, I did not make sure it was with the correct face down

loud spear
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Is F for flange? If so, then that's what I've got

regal gorge
sharp rover
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Hey everyone! I’ve been working with Stanciu and am working on stocking kits for the hybrid mod that has all the parts needed (pullies, idlers, bearings, motors, etc). Just wanting to gauge interest so if you’re interested if you could react to this message. It’d be based out of the US with shipping in the US for now but not opposed to shipping elsewhere. If there’s enough interest I’ll post a link to my discord with a channel for more info

karmic burrow
loud spear
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Fits perfectly, and now I can reach all the way to my X/Y limits for homing. After changing to the VZ print head I was having to back off after homing the X axis to avoid crashing into the motor in the back corner, and ran into a few problems where the print head would manage to get into this area still and smash my fan duct. Will try to see if there's a way to remove enough links from my cable chain to get clearance to mount the motor right side up on the other side too with these mounts

loud spear
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Just to be clear, my issues with clearance are not with accessing the full bed area, but with the additional movement range required to dock/undock my probe in that area behind the build plate.

regal gorge
# loud spear

you should do the rear motor mount as well, they are stronger and are anchored in 3 points

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for the awd I mean

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its just 8 more shoulder bolts

loud spear
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I have some modified rear mount already that I found in community mods somewhere I think... that mounts to an extra support. I'll check yours out though

regal gorge
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yes, the look very strong

loud spear
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Yeah, overtightening the belts and bending the original towers inwards was my very first mistake when I first built this. 🙂

loud spear
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Here's the 2000mm/s. Have discovered a few things the last couple days. MZV is rock solid, but EI can't handle anywhere near that speed.

regal gorge
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what accel is this test at?

loud spear
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50k, but discovered later accel_to_decel was at 15k

regal gorge
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also 57V? and how much current?

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insane results, I am glad you are getting so much out of it

loud spear
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After some more testing, basically I can hit 35k with accel_to_decel at the default 50%. Best I've gotten is 17.5k for accel_to_decel with the 50k accel

regal gorge
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crazy numbers for that speed

loud spear
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57.7V at the moment, 1.5A run_currenr

regal gorge
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I am testing some motors that might have what it takes to get 2000mm/s much easier in theory

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on paper these motors should have the speed of the ldo 2804 and the power of the ldo 2504

loud spear
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Around 58V+ I start getting occasional klipper errors about "motor short to ground" not sure if that has to do with my cheap psu or maybe my board can't actually handle true 60V...

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2804 are faster?

regal gorge
loud spear
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I could probably go a little higher amps still, but I think this is probably about the limit without adding extra cooling for the motors during actual printing

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My original 2504ac motors were running at 1.76 run_current just fine when it was just the two motors but had to put fans on their heatsinks to keep them from getting too hot

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Does your metal gantry stuff have thermal conductivity all the way through to the printer's frame or full printed parts in the middle of the plates?

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If could effectively use the frame as a heatsink for the motors that might be a big help at higher amps

regal gorge
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nvm, it also holds the double shear bearing

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I can make a version of the plates that holds the bearing instead of the printed part holding it

loud spear
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I don't know... I was just imagining something like aluminum standoffs to thermally connect the top plate the bottom plate or something... Or maybe aluminum bolts instead of steel would be enough to transfer some heat? I don't know...

regal gorge
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My front metal awd mounts, can conduct a lot of heat

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But they are still in testing

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I will make a design for the rear metal motor mounts also

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Less plastic more metal than the fmg

loud spear
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Well, definitely following to see what you come up with. 🙂

regal gorge
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@grizzled burrow

grizzled burrow
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sorry

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wrong room

regal gorge
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Not a problem

grizzled burrow
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printed the parts already but working on my tradrack stuff right now but mount the parts later tonight I will post a youtube

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I have been using limited coreXY as the Y just doesn't have enough to keep up with X

regal gorge
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Cant wait to see it, dont froget to read the mentioned I put in the repo

grizzled burrow
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prints are beautiful at 400mm/s and 15k accel

regal gorge
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That sound good, what hotend are you using?

grizzled burrow
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I am not a speed benchie person I want nice prints lol

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well Slice Mosquito heatbreak and cage and using the Volcano Crazy NF with a Ruby tip

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that picture I put in the other room

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forgive the wiring mess lol

regal gorge
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That is pretty nice

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How well is the frame braced?

grizzled burrow
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I don't use Can Bus all wired and using OnePlus red USB cable for EDDY and Accel

regal gorge
grizzled burrow
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real rubber USB handles the moment

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I took the cables that were messed up and spliced them together for the EDDY

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so that cable is about 18ft long lol

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use ferite signal blockers

regal gorge
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For most of my motors cables I had to do the same

grizzled burrow
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well I have a server running 22 printers

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Dell PE R730XD loaded

regal gorge
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I don think I saw 22 printers in total in my life

grizzled burrow
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um my buddy in texas has like 100

regal gorge
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Sounds like a dream

grizzled burrow
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Mercury mess

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lol

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he used to be on this server but he is kinda a bit much to handle lol, as most of us he's nuts

regal gorge
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Or is that some one else

grizzled burrow
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yes

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look though his videos

regal gorge
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I talked with him

grizzled burrow
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yeah shift6 I think his name here was

regal gorge
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He did 4 motor hybrid on one of his bigger printers

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I joined his facebook group

grizzled burrow
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he is not a bad guy turtle and precurssor did not like him at all

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to their defense he is a little off

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I am trying to talk him into a MMU right now

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the other day he printed ABS horse head that I have to admit was the best looking print I think I have ever seen him do!

regal gorge
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I dont open facebook that often, but I did see one of his bust prints a while back, and it came out nice

grizzled burrow
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I mean that is f'n nice

regal gorge
grizzled burrow
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that was ABS I mean I was almost jealous!

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Texas only in Texas! lol, I could not sell that here in Polo country lol, how does he do it?

regal gorge
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I don't know, I cant get mine to print this nice, I didn't get the time to tune it that nice

grizzled burrow
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@regal gorge question, the hybrid stepper mounts, I am using t-nuts? right as the holes that are there from the right angle plastic brackets, are not lining up

regal gorge
grizzled burrow
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kk just making sure

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I will have everything mounted in an hour but forgot I used the last of my belt lol, so ordered it will be in tommorow, also I was thinking of grabbing stepperonline steppers you ever used them? I normally use LDO , Moons , or Honeybadgers

regal gorge
grizzled burrow
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thats what I wanted to hear lol

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12 bucks each it makes me a little happier that 40 each

regal gorge
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Yes, there are also some other steppers that are spec match for the 2504s

regal gorge
grizzled burrow
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yes

regal gorge
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And why 40?

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Usualy the are 23

grizzled burrow
regal gorge
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2 for the price of one

grizzled burrow
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30 each sorry

regal gorge
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They is espensive

grizzled burrow
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yeah they went up

regal gorge
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I got mine from biqu, for 22, the ones with longer shaft were expensive

grizzled burrow
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I am not ordering them for a few more days but the Creality 42x40's will work for a test

regal gorge
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Yes

grizzled burrow
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I was going to use two SKR 3 EZ boards but I have a SKR mini that I wont use anywhere else plus I might use it to power my MMU too

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Klipper is so easy to add MCU's lol

regal gorge
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I have a btt kraken and a skr pico to get all the drivers I need

grizzled burrow
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that works

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Kraken is really a nice board

regal gorge
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For now

grizzled burrow
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you know whats cheap and a great price and board?

regal gorge
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Yes, the cheapest 8 driver 2160 bpard

grizzled burrow
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the ratrig SKRat board

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supper cheap

regal gorge
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For 2wd printers I use the fysetc pitb v2

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Even for the first awd test build, I did 2 pitb's

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On my trident I did a pitb and a cheap mellow board and some btt drivers

grizzled burrow
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I like mellow stuff to be honest I have yet to get a bad item

regal gorge
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Pitb cand do up to 4.7A on the motors, so I could use some spicey motors to get 1000@100k out of 2wd

regal gorge
grizzled burrow
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the volcano copper block I am using from them is insane to 100watt heater and that block I get some really great flow

regal gorge
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Pitb is 43$

grizzled burrow
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wow cheap

regal gorge
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2 5160 drivers on a slim board with a pi pico, 2 fan ports, endstop ports and rgb port

grizzled burrow
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also I found a better fan supplier than any of the china sites or name brand guys, an Ebay seller got it out right away I had a Delta fan that you normally have to get from china and normally takes 3 weeks to get I got in 2 days at 1/4 the price

regal gorge
grizzled burrow
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I need to really look into getting that board

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That fan supplier I found is for breathing machines so they have almost every fan we use and because they deal with medical people they ship out fast and its US based

regal gorge
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The problem is, if you do more than 2wd, once you factor all the boards and drivers you need, you cant get a better price than the btt kraken

grizzled burrow
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I just switched to this

image.png
regal gorge
grizzled burrow
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51x15 but really quiet and blows like 3 5015's

regal gorge
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Interesting

grizzled burrow
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yeah John turned me on to trying it out

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super quiet

regal gorge
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Magic fans

grizzled burrow
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42 db I think at 100%

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\nothing

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I think I breath louder lol

regal gorge
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Fast shipping, cheap, 3x performance and quiet

grizzled burrow
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yeah I was blown away on shipping speed, the fan I got what I was expecting but US based and cheap was also just blown away (no pun)

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hold on I will grab the seller link off ebay

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that Papst fan is like 60~80 everywhere else

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even the link on Jon's site for the E34M1 digikey I think is his link is 55.99 and 20 in shipping

regal gorge
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They might be quiet, but the flow is similar to a normal fan

grizzled burrow
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I think maybe because the preassure is better I did the water test an it moves a lot more air

regal gorge
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Probably

grizzled burrow
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I am not a fan expert lol, I just know what I see

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the 40x40x20 is 12.4 cfm

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vs the amazon best is 6.6

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I needed a little more pull on my heatbreak

regal gorge
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Speed vs preassure

grizzled burrow
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I changed to that 100 watt heater and the honeybadger fan failed me, so I put every fan I had on it switch from push to pull and nothing really kept up but this cooltron worked great

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was about ready to pull one of my server 40x28 fans out

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but that noise!!!

regal gorge
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Deafening

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The cpap system is in theory still medical grade equipment

grizzled burrow
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yeah I just dont want to go that route yet

regal gorge
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No needed yet

grizzled burrow
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not at the speeds I print at anyway

regal gorge
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I am using dual 4010 fans on 2 of my printers, the will do just fine

grizzled burrow
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everyone I know with Ratrig Vcore 4 talks about how much the hybrid helps the y that is why I am trying it

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4010's blow a lot of air truly

regal gorge
grizzled burrow
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Thatş what they are all saying

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One guy was like you only need it if using a heavy head or Idex and I was like no I think it works for any CoreXY with a long belt issue

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which AWD helps with that to, just I don't know if I need all that yet

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I think AWD would cut down on VFA's more than anything

regal gorge
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For a heavy y axis, hybrid is better than awd

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If the y axis isnt that heavy awd is better

grizzled burrow
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The 5 plus is heavy on its own lol

loud spear
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V1.0 kraken will do i think 8A on each of the big stepper drivers and runs 2x LDOs in parallel just fine

grizzled burrow
loud spear
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Btw, sensorless is hard to dial in on the y axis, especially with the way the tmc5160/2160 drivers handle sensitivity adjustments. X axis worked fine sensorless for a while but I switched to physical switch there too, just for the reliability. Don't want a false trigger messing up where the printer thinks its positioning is and then crashing the head into the frame at 2000mm/s. 🙂

grizzled burrow
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using 2209's

loud spear
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2209s might be a lot easier. For whatever reason the 5160/2160 drivers don't have enough granularity in sensitivity adjustments

grizzled burrow
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I am not looking for blistering speed just looking to basically keep beating the slicer est time and getting perfect prints lol,

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I use my printers to make money not just doing speed benchies lol

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answer anything you post but working on 3 printers at the same time so back to fixing problems and creating more problems lol

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duh forgot I put discord on my Screen in printer shop

loud spear
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The hybrid complicates resonance s and belt tensioning a little but end result is it does definitely bring y axis a lot closer to x axis

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With AWD corexy + 2 motors running the hybrid belts (& lots of weight reduction mods) I'm at about 9500 mm/s shaper recommendation for y axis. 2 more motors to make the full 8wd would probably bring X & Y about even I'm guessing

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Have plenty of speed at this point, but I think those last 2 motors might give a decent bump in print quality at higher speeds. At this point I'm more focused on getting filament cutting/purging working properly for my multicolor prints though. The extra boost to travel speed is absolutely nice for all the cutting/purging moves though

loud spear
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Print quality has definitely improved, but I have to say if I was relying on this printer to make money I would be going broke with as many times as it's torn apart for repairs or upgrades. I'm glad yours are making you money though! 🙂

grizzled burrow
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dam I wasn't paying attn and just burnt out a pwm fan port

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no biggie just use not used heater

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but first thing I have burnt up in over a year!

meager mulch
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I am running into an issue where klipper is asking me for a stepper_x with the extended_corexy kinematic. Has anyone else run into this?

image.png
sharp rover
meager mulch
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I have done that. I built a, b, c, and c1 in and Klipper is saying my non existent stepper_x is invalid.

sharp rover
dry crest
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just a question did you install extended corexy plugin?

meager mulch
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Yeah. Klipper recognizes the kinematics: extended_corexy and there is a directory for klipper-extended-corexy-kinematic.

meager mulch
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I'm an absolute Genius. The default MKS toolhead board has a stepper_x section for the endstop that I copied over.

regal gorge
meager mulch
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Yes I did!

I'm just waiting on the shoulder bolts to get AWD with double sheer going next.

regal gorge
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Nice, can the frame and hotend keep up with the speed and accel?

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Did you brace it? What hotend are you using?

meager mulch
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I braced it, have a plywood sheet with DIN rail for an electronics backpack (slid into the extrusions), and just threw a dragon UHF on it.

Tonight I got the 5160 pros configured in Klipper and mounted the 48V powersupply.