My custom CoreXY printer and it's electromagnetic tool-changer

A guided tour of the different function of the printer.
The printed spring effect makes the difference for an efficient electromagnetic coupling.
Post publication comments
I'm sorry, the industrial file isn't in a shareable state at this time and I don't think that it would be a good idea to start a new design on this basis.
I'll do my best to answer to your questions.
Nevertheless, as some of you requested it, here is a link to the GCode macro for the XYZ Probe with comments in french.
drive.google.com/file/d/1IoGn...
0:00 Intro
0:17 General overview
1:16 Main technical choices
2:03 Z axis & heat bed
2:38 Cinematic
3:29 Carriage
4:20 Coupling
5:03 Toolchanger spring effect
6:28 Print heads
9:00 Cables
9:15 XYZ Nozzle Probe
10:05 Extruders
10:18 Filament box
10:41 Electronics
11:13 Trash Can

[@SnekInTheGrass]

I am amazed at the shear number of elegant solutions implemented on this machine, everything from the cooling blocks on the steppers, the permanent magnet head holding workspot, and even little trash can in the frame. It seems like every issue I have ever had with my printer you've got an answer for. You are one hell of an engineer, thank you for posting this!

[@workshopfeedback]

Thanks for the dopamine shot !

[@thegamercave5160]

@@workshopfeedback lol

[@Schroefdoppie]

"When an engineer builds his own FDM printer" 😄😉. As a mechanic with an engineering background, I love the modular design and ease of maintenance build into everything. Definitely has an industrial / professional feel to it. Well done sir👍

[@kailuasurfing]

5:36 - that was a very satisfying CLICK! This whole build is amazing. I didn’t think this was possible! Can’t wait for more content on this!

[@workshopfeedback]

I don't get tired either

[@Thors10-Fix-It]

I'm speechless, you have to be a little genius to design, program and build something like this. I wish you a lot of fun and success for all further projects. In the hope 🤞😉 that you will continue to show us exciting things, I immediately subscribed to the channel. Best regards 👋😃

[@workshopfeedback]

ah ah, thanks ! just an old engineer using a fantastic shared knowledge and quality software pieces . I try to put my stone by sharing my work if I consider it innovative. Which isn't so often :)

[@stefa168]

Your tool-changer looks fantastic! I'd love to see it implemented in vorons or other printers! My jaw also dropped when I saw the piezo calibration 🤯

[@michelemarrazzo4167]

Very Very interesting design choices overall. I find super clever the offset nozzle piezo contraption you showed, super simple and effective!

[@Rein-hg9in]

Nice to see someone using an electromagnet, I've build a toolchanger with an electro-permanent magnet about 2.5 years ago. Many people don't like the electromagnets, but I do...

[@Breeegz]

I am deep in the process of setting up an Ender5+ with mods from ZeroG, and I have been thinking about all these types of upgrades and quality of life improvements. The easy maintenance on toolheads is one of my main goals and I really like your solutions. I'm going to subsscribe in hope to watch your content for future inspiration.

[@ZebbMassiv]

I am a 11 year industrial cnc (Maka) operator/occasional programmer. I make kitchen sinks for Blanc & Fischer in Toronto, Canada. I am extremely impressed with your progress. Please make more videos you're really doing good with the production of videos. Please make more. Every time you make a video makes me want to achieve greater and leave my dead end job. I'm worth a lot more. You inspire me.

[@remainsmemories626]

Wow, this is really impressive! Will be looking forward to your new upgrades!

[@gavinddd2070]

This is beautiful work. Well thought out and executed. I look forward to any and all updates and as in-depth videos you are able to provide. I am an immediate fan.

[@micultimy91]

Thank you for sharing this with the community! It's simply beautiful engineering! Have fun printing on this machine!

[@WoodmanFFM]

One word: AWESOME! This printer is a very nice piece of engineering, the piezo calibration is genius! I tip my hat to you, be proud of your machine!

[@grey1185]

This is truely amazing. Well done man. I cannot wait to see further developments for this. I feel like this is a project that can really evolve some aspects of printing. I would be interesting in making this someday.

[@dury10]

Congratulations well done still need to review it. It was a pleasure to see all the ideas well managed and a lot of features

[@user-www.al35]

Уважение за проделанную работу, всё сделано очень хорошо и скурпулёзно,даже представить не могу сколько времени ушло на настройку что бы всё работало как надо👍👍👍👍👍

[@TheHamster4430]

Omg! It's sooo well thought out! I even got answers to all my questions that arrived at the beginning of the video (i.e. flexible part with a washer which could eventually brake). I believe this channel will grow exponentially

[@ExcitingCreations]

Ingenious and really well thought out design! Keep up the phenomenal work!

[@Loneman_OG]

I love your ingenuity and the simplicity and elegance of your designs; what a fantastic job. It's people such as yourself who make this community so bl00dy awesome! 👍 I've subscribed; I'm looking forward to more updates. 😎

[@mihaiolaru7259]

astounding ideas and solutions! excited to see more

[@el3ctros]

Really amazing engineering. Love the peltier filament box and probe.

[@alston523]

This is one of my favorite quality KZbin video. You showed us what is possible with engineering design skill. You’re truly inspiring. This make me wanna design my own printer and KZbin really got a lot of good design engineering people. 🙇‍♂️

[@shodanxx]

Oh what a difficult choice I have to make. Tap changer, or this. This looks easier to deal with and more reliable. Especially wirh a laser, dremel,cutter and other tool types. I really like the easily removable bed. Plasma cutter bed would swap nicely !

[@liamventer]

Very nice work! So many clever ideas.

[@Accessgp]

A very brilliant design! Keep up the great work 🙏

[@jeremychassagne224]

juste impressionnant ... une qualité de construction et une faculté de résolution de problème juste comme il faut ... BRAVO

[@knutrichardvanderloock7914]

This I would like to follow. You attack interesting challenges with exemplary good solutions and I really hope your work will be noticed and appreciated.

[@mtstreaman1138]

Impressive. Can’t wait for your next project!

[@guillermocebrerossierra9041]

What an impressive job. It truly reflects a professional job by a professional worthy of admiration! It's really satisfying to find these types of videos and projects. Congratulations!!

[@workshopfeedback]

Thanks

[@snowshoyo]

wow! THIS IS AWESOME!!! Great job! Great crafting skills, I'm really impressed! I really loved the idea to change print heads with magnets, so you can make multicolor without wasting lots of filament !!👌

[@Sphyxx]

That's absolutely amazing! Also no one is perfect at making videos from the get go but you did awesome work on explaining the things, good angles and quality on the video, you have a really good start!

[@workshopfeedback]

Very kind of you Thanks

[@kailuasurfing]

I would be interested in seeing a video on the filament enclosure, specifically the electronic control for heating/drying

[@workshopfeedback]

Nice to read this. It's on the way ...

[@g0d77]

Amazing work. Very interesting design. Kudos

[@KellyBC]

Great job! Looking forward to seeing more of your work.

[@tadhgd350]

My dude doesn’t know how to make compromises. AMAZING job

[@workshopfeedback]

Thanks

[@TheJttv]

The build is great. But i am most impressed by your code.

[@doulos5322]

This is so good that you sir going to upgrade my printer with a similar solution.

[@microsoftword213]

This is incredible I cant imagine how many iterations it would take me to get there, and maybe not even then. My favorite feature is the position of the steppers, if only my printer could self level. I also love how light your printhead looks without those annoying doubled up steppers.

[@jaimevaldez3058]

very nice design! i just subscribed cant wait for your next update or project.

[@allanfullilove774]

Awesome one of the best home made printers I have seen. Amazing work

[@workshopfeedback]

Thanks Allan

[@MoralRichMedia]

Amazing work! Both on the printer and in making the video.

[@yoyo-sm5vv]

This channel is so underrated

[@DoTheDiy]

thanks for really taking time and explaining the details. It has really helping in designing my printer. Thanks

[@workshopfeedback]

Great ! Thanks

[@DoTheDiy]

@@workshopfeedback I came up with this design using a permanent electromagnet. There will be no heating of magnet and no dropping of head on power loss kzbin.info/www/bejne/bqK9iImjd8dqo5Isi=ROECuBAK_hz26QeN

[@Meloshski]

This is amazing. Your work here is truly impressive. I can see this being the voron design and should be named after you.

[@workshopfeedback]

Hi Greg, As Voron is a CoreXY Printer with three Z axis, there are similarities with Voron Trident. I inspired of all what I found of the web but as I started the design from scratch and didn’t use any of the files provided by Voron, I don’t think that you can say it’s a Voron. By the way, oldest Voron Trident files are dated August 2021 and I designed and built my printer between January and August of the same year.

[@TheRealClutch1010]

@@workshopfeedback I don't think he meant that the Voron team is claiming this work, he was suggesting that the Voron adopt your design into their CoreXY system. I would love to have a tool changer capable Voron and your system looks easy to implement. Nice work!

[@workshopfeedback]

​@@TheRealClutch1010You're right, I misunderstood the compliment @Greg Melosh Sorry

[@jung-taekim3993]

Good design and implementation. Your explanation was enough to understand your system. Thank you. ^^

[@workshopfeedback]

Thanks

[@LucasHohmann]

Incredible engineering, kudos!

[@Ninjashadoww]

Very cool design!

[@stefanguiton]

Incredible work!

[@SpeedySpy]

Super cool, loved the video!

[@LongPigg]

Very impressive, well done.

[@johnbelfiglio562]

This is an excellent design. I have been working on a custome corexy build for a few months now and really like your electronics and filament management. Great ideas! I’m making a 500 x 500 x 550mm size. My biggest issue is the bed warping being so big. Had to order a 6mm thick aluminum sheet and will have to make the bed myself. I plan to make it tool changing eventually and love your design. Great ideas. Good job!

[@workshopfeedback]

Thanks for your comment, have fun with your design.

[@BrianBoniMakes]

This is very helpful. I am building a core xy.

[@BloodyMobile]

This is a very amazing design, clearly showing that a lot of thought went all parts of it. Though I personally would have made the filament box wider, to allow the use of bigger spools than the 1 kg kind. But anyways, a very very impressive design you created there.

[@modeliste6011]

Superbe travail, bravo

[@initialb123]

amazing work, nice.

[@Future_Ancient]

This printer looks outstanding! I hope you continue to make videos on it! A more elegant connector system for the print head pcb might be in order, some printers have started using USB C for this purpose, as it can transfer any required data and up to 100W of power!

[@workshopfeedback]

I'm afraid that USB C connectors would be difficult to wire and implement on rustic PCB. For an industrial and commercial product it can make sense

[@user-tx3vl5gz6u]

Realy like your printer. I want to make basically the same type of printer by my self, but i was consuming is it even possible with home workshop supplies. Now when i saw your one, i totally gona make it!

[@workshopfeedback]

Great, let me know if you success

[@clwnwrld]

very interesting, thank you for this educational video. Inspiring

[@jbrownson]

Cool project!

[@whatsnextdiy]

Hi, very fun looking project to design and build. You may have inspired me to look at a tool changer for my custom machine. Look at the duet 3 with tool changer boards it could potentially make your wiring a lot cleaner and easier to manage. Thanks for this really cool video.

[@workshopfeedback]

Thanks, Yes Duet3 CAN boards are interesting but more expensive and there are still cables ...

[@theloneliness7128]

Kinda similar to the Hevort DIY printer. Probs for the toolchanger. Thats a smart way.

[@lezbriddon]

brilliant design

[@workshopfeedback]

Thanks

[@serialtesteurdu64]

beau boulot impressionnant

[@markstevensfpv3722]

Very impressive 👏

[@fredericsimon2905]

félicitation , cette imprimante me parait bien complète , beaucoup de chose très intéressante , changeur d'outil , la récupération du centre des buse ,... je suis moi même en pleine conversion d'une anet E12 en voron trident , un jours peut être aurais-je aussi un changeur d'outils.

[@workshopfeedback]

Merci Fréderic, Je te souhaite de réussir.

[@smorris12]

C'est magnifique!

[@epofimpressao3d506]

Parabéns!!! Excelente projeto muito bem explicado suas ideias e processo. Estou trabalhando em um projeto tool-changer, mas tinha duvidas qual mecanismo de trocar usar. Depois que vi esse seu vídeo não tenho mais duvida que usarei sua ideia!!! Simples e eficiente!!! Sucesso para você. Se um dia puder compartilha o projeto como um todo vai ajudar muitos que deseja ter uma tool-changer. Abraços.

[@workshopfeedback]

Great ! Keep me informed when you success.

[@user-xf4sx7io9t]

great job👍

[@danielkrah5129]

Well done.

[@RaphaelRema]

Nice work 👍

[@elisedurand6328]

Trop fort ! 🤩❤

[@workshopfeedback]

😘

[@wktodd]

Excellent, I like it

[@design8studio]

Thanks for sharing such interesting work!

[@workshopfeedback]

Thanks Doug. I had a look to your work which is also very interesting. It seems that we share a design addiction.

[@design8studio]

@@workshopfeedback 🙂Yes!

[@design8studio]

@@workshopfeedback Any chance you have shared, or would share, your printable files?

[@workshopfeedback]

I just sent you a download link.

[@design8studio]

@@workshopfeedback thank you! Also, by using your approach, I designed a magnetic kinematic tool changer for the LowRider v3 CNC. I’m almost ready to publish it.

[@ng12129]

very impressive

[@sonbrother6167]

Beautiful

[@M.SKhan123]

Excellent.

[@Sciman0231]

What a fantastic DIY build, you did an amazing job! Clearly a lot of thought went into the design of this thing. I'm curious - since the magnet requires power to hold the toolhead, some of which is getting released as heat, how much more power the machine consumes versus a motorized lock. Even still, this is really fantastic! Great job presenting, too

[@workshopfeedback]

Thanks for your comment, The power of the electromagnet is 6W I have not made a total assessment of the consumption of the printer but I don't think it significantly increases the power consumed during printing

[@somathebest]

It should be a good idea to place the electromagnets only on the resting point and use them to "release" the coupling somehow. Awesome, Like from Spain!

[@workshopfeedback]

It's an idea. I'm not sure that the permanent magnet used for the coupling wouldn't be unmagnetised by the release field over the time. Greetings to Spain from France

[@somathebest]

@@workshopfeedback Forget the permanent magnets, i mean a mechanichal coupling who dettaches when electromagnet is powered with one electromagnet on each holder. If you are on a discord or something i can colaborate on designs

[@workshopfeedback]

Hello Martin, I don't really see what you mean. A drawing would surely help

[@somathebest]

@@workshopfeedback let me prepair a 3d model of the concept i will send to you a model, are you using fusion360?

[@workshopfeedback]

Thanks for your file, Martin, It's certainly an option. It may be tricky to tune with small moving parts and springs.

[@hasanberamumcu8662]

love it.

[@DavidEgea13]

What a fantastic job!! Specially the auto calibration of the tool offset using the piezo, it would be very helpful if you could explain how you did it :)

[@workshopfeedback]

David, I presume you are interested by the algorithm. It's a GCode macro which solves this geometrical problem : - Place the nozzle above the probe (approximative position) - Go down until contact (position Z0) and up a bit to Z0 + e - Go left enough to be away from the cylinder - Go down twice a bit so the nozzle should toch the cylinder (to Z0 - e) - Go slowly right until contact and remind position X0 - Go to Z0 + e - Go right enough to be away from the cylinder - Go to Z0 - e - Go slowly left until contact. This is X1 and the center of the cylinder on the X axis is (X0 + (X1-X0)/2) Repeat the same operation on the Y axis. Hope this helped

[@DavidEgea13]

@@workshopfeedback Thank you for the explanation Actually my doubt is, how to configure the piezo, I cannot find anything in the RRF

[@workshopfeedback]

@@DavidEgea13 Had a look here ? www.precisionpiezo.co.uk/

[@DavidEgea13]

@@workshopfeedback Thank you so much! Now I can sleep jaja I saw that website but didn't though you were using it, I'll have to buy one. Can't wait to try it in my IDEX. Thank you for sharing with the OpenSource world, keep the great job

[@antronk]

Wonderful project! I’m very interested in the peltier dehumidifier solution

[@workshopfeedback]

Hi Antronk, I'm currently working on a video about it.

[@Andrew_070]

amazing

[@Altirix_]

this is such a neat project. i think there could be a solution to the number of stepper drivers & analog pin required for each hotend by rather running all common connections to the toolhead and use pogo pins to connect from the toolhead to the current print head, macros should work to switch between each tools config but not looked into it myself. then you only ever need to wire up once.

[@workshopfeedback]

Thanks, It's an option. But I imagine this only possible for the extruder motors which are never working together. During multi-extrusion, Its preferable to keep the hand on both printhead heating, temp control & heatsink cooling, so no swap possible there. I'm sure it can be controled trough GCode.

[@a1hamer]

Beautiful printer and well thought out. Thank you sir for sharing. This is a very inspirational video. Hope to see more videos. Are you planning to enclose your printer so it can print high temp filament?

[@workshopfeedback]

Hi, Alfred, I'm not because I dont print high temp filaments but it can certainly be done.

[@stevenbmw850]

Very impressive design! You should work for bambu labs 😉

[@darkwinter7395]

Nice!

[@Luigilocoloco]

Please make a set of plans avaliable for this printer, this is exactly what I have been looking for

[@workshopfeedback]

I'm sorry, the industrial file isn't in a shareable state at this time and I don't think that it would be a good idea to start a new design on this basis. I'll do my best to answer to your questions.

[@pavelsoloduhin3461]

Wow!!! 👍👍👍

[@juliocesarmikas7778]

Simply fantastic, your concepts are straightforward and very well resolved, I ask do you want to share your project?

[@workshopfeedback]

Thanks, it's not really in a shereable state at this time. Sorry,

[@rodryk5605]

Bravo. That must have taken a good part of a year to design, build, iterate, rebuild, lol. Really love that piezo xyz probe. I wonder if you could reverse its use to make a simple pressure advance, 1st layer consistency probe, like the bambo without lidar.

[@workshopfeedback]

I don't know this printer. For this, the best could be to have a constraint gauge (or a piezo) in the print head. It's the case for the Prusa XL

[@trevorsmale]

Your presentation was excellent and the various solutions you had were so elegant. This seems like an excellent foundational design that must have taken so much time and consideration. Is there a possibility that the project files are in a repository for others to fork/iterate?

[@workshopfeedback]

Hi Trevor, thanks for your comment. I'm sorry, the industrial file isn't in a shareable state at this time and I don't think that it would be a good idea to start a new design on this basis.

[@dmawzx]

Молодец!

[@Brocknoviatch]

How fast can it print? Do the magnets limit how fast it can print? Fantastic tool changing printer, love the use of the flexible filament in the tool changer!

[@workshopfeedback]

I didn't look for speed limit yet. It is certainly a limitation of this coupling compared to a mechanical one due to it's elasticity

[@TrucoStep]

Awesome build, all issues are thinked with premeditation and i love it, i whould like to build my own FDM printer in the future but i don't know about software of the printer you use or what motherboard use to keep track of all the extra sensors and extruders, and less how to make the GCode to do the comprovations on the position on the extrude too.

[@workshopfeedback]

Thanks for your comment, I used Duet2Wifi & Duex5 boards from Duet3D and the Reprap firmware thet goes with. I also shared the XYZ Probe GCode Macro in the description of the video

[@mathieuperruchoud4587]

this is amazing will you make a video or realise some more info on the build beacause i m trying to build my own printer and i love this design

[@workshopfeedback]

Hi Mathieu, It would be quite a work to to make my files shearable and there are lots of things undocumented. If you have questions about specific points, I'll try to answer.

[@Meister_Knobi]

Since the E3D Toolchanger i was intested in ths concept, but i think there may be some possible problems with your design, specialy the magnet. First in case of an power loss the printhead would fall off. A simmilar pin on the moving part as on the toolholders could prevent that. Than you mentioned the permanet magnet, you clould use a perma magnet instead of the aktiv one to hold the tool and only use an activ magnet in the moment of toolchange, so you can be safe at a power loss and get rid of the cooling fan for the activ magnet. The activ magnet for the release could be even positiond at the statonoary toolholder to safe weight.

[@workshopfeedback]

Hi Niklas and thanks for your comment. I agree, it's an option.

[@horstfriefemann1614]

Hey, I love your Design!!! Would it be possible that you publish your CAD model and the different Firmware settings or slicer settings that you use? I would love to build my own!

[@workshopfeedback]

Hi Horst, I'm sorry, the industrial file isn't in a shareable state at this time and I don't think that it would be a good idea to start a new design on this basis. I'll do my best to answer to your questions if any.

[@eddysshow]

I love this so much and I will try to use this for my own toolchanger for sure! I have just one question: have you tried different strengths of electromagnets until you decided for the 34/25mm one? I am just wondering if other versions are also viable

[@workshopfeedback]

No that was my first try !

[@TheJacklwilliams]

I’m humbled by your design and engineering skills. Thank you so much for sharing. I have to ask, what is your history professionally? Apologies, don’t mean to be invasive or nosy I’mjust curious how you buit your skillsets over the years. Whatever the case is,they are absolutely phenomenal sir. Subscribed!

[@workshopfeedback]

Thanks for your comment Jack, To answer to your question I am an electronics engineer. I have worked on the development of hard/soft/mechanical products for various companies and I continue as an independent consultant. I love the creative process from idea to object and the elegant solutions.

[@TheJacklwilliams]

@@workshopfeedback Thank YOU! That is fantastic.. IT Engineer here, getting into hardware/electronics/fabricating, etc…. Love it as well and your application of it is NICE!!! Elegant is what we should shoot for! Keep doing it and sharing!

[@adammilnesmith]

@@workshopfeedback another IT guy here - any suggestions on resources to start learning as a noob in mechanical things?

[@workshopfeedback]

@@adammilnesmith Hi Adam, You may start building something based on shared design like a drone, a RC car or a Voron 3d printer. Buy a simple 3D printer. Participate to a Fablab ...

[@adammilnesmith]

@Workshop Feedback thanks for the reply! I'm currently renovating my garage so that I have a place to put a 3d printer and start building things. I hadn't thought about joining a FabLab or similar - great idea. I'm also curious if there's any good sources to provide structured learning of foundational level theoretical knowledge for mechanical engineering for someone with a strong mathematical background already?

[@thomaskletzl6493]

it really looks great i dont know if you already know this or not but fusion 360 has a free 3d model library there are models like the linear reails (mgn12) its very usefull for me.

[@workshopfeedback]

You're right ! Thanks