Mihai, you have done some serious work towards getting PitStop 2 ready for release. Love the video!

Amazing work behind! 👏😌 It’s wonderful seeing all these details!

I would swap the pogo pins so the male is on the extruder. The female part should have more coupling cycles since it's non mechanical, and given that hotends are considered consumable parts that eventually have to be replaced it makes sense if it was there since it's likely that parts on it will have to be replaced anyway. Instead of RFID I recommend more pogo pins, embedded to an ATTINY or something of that size, with the pogo pins delivering GND, VCC, SDA, SDC, so you can do basic communication with it to ask it for it's information. I do embedded work so if you need any help with that hit me up!

The approach to chanhe only the hotend asswmbly while keepinh the stepper is just brilliant

Your videos really inspired me to return this long forgotten dream of design things and rethink many objects I use daily. Your passion and effort is helping not only to improve the printers, but the owners to be better versions of themselves. Thanks from Brazil.

I probably could never afford this, but I can still recognize that this is dope as hell

I think this project reaches a point, where it's not so much about a simple retrofit on a stock mk3 anymore. Instead think about it as a specialised solution that requires a custom made 3d printer (at least X and Z axis architecture). A stiff traverse with linear rails, the NEMA 17 on the back of the traverse... So many new opportunities. I guess you have to start your own 3d printer business. let me know when you are hiring.

I'm all about automatic switching and multimaterial, but honestly for me with my current ender 3 printers the biggest benefit I see is easier maintenance and general problem solving. If my wife has a problem while I'm traveling, much easier to just swap the whole hot end out and adjust z axis, then I can fix it when I get home

"KEEP THE BOAT AFLOAT" Your design is is evolving beautifully love what your doing and thanks for sharing your experiences with us!

Very nice design. I have been waiting for this for so long after you teased us all with your #shorts

That is a very nice engineered solution. Deep respect.

Very nice extruder design :) the amount of thought and work put into the design is apparent

Incredible design on this and I've loved watching the progress you've made on this on your instagram. Super impressive and I can't wait to see where this heads in the near future. Keep up the great work Mihai!

im really fascinated of your design, u thought about so many details. Great Inspiration and work. Have a nice day!

This is a really clever design! Thanks for sharing your valuable work!

Wow I’m so looking forward to the outcome of this amazing project!

I know it's going to increase the complexity of the whole printer, but if you want to miniaturize the swapping mechanism, you have to involve other kind of technologies such as pneumatics. By adding some small pneumatic pistons, you will have more force in a small package to fix the nozzle assembly in place. Thanks for sharing the development details with us! Baftă 👍🏻

Amazing work Mihai!! Looking great mate!!

I so enjoy watching/listening to your videos as your voice really calms me down and the content is always either super informative, very inspiring or incredibly funny XD

This can be good for those who often use different nozzle sizes. With the right mind set this can do a lot

Amazing Mihai! Great job! Thanks for sharing!

Wow Mihai! Well thought out and very transparent on your technical challenges left to solve.

Thanks for being awesome! Great to see your thought processes and the ideas you're trading against each other for future iterations.

Amazing mihai, i really waiting for my ender 3 v2

Awesome design and your work

This is really great, specially the design has a small amount of moving parts also less wearing and breaking

This... Is... brilliant

YESSS I WAS WAITING SO LONG

You my hero! I'm about to build a Frankenstein printer from old parts salvaged from my original anet printer. Can't wait

Beautiful design!

Brilliant, like always!

What a great design!

Seriously, this is super cool.

The amount of work involved in this is crazy. Well done Mihai :)

As always, nice video 👍👍

This is extremely impressive. I look forward to seeing this project evolve

Amazing works. You re inspiring!

Interesting approach to a tool changer Eager to see more

Dude, This is absolutely Awesome!! Feel like this could be a gamechanger. Please go on 🙏🏻

You‘re genius, keep up the great work!

This is amazing work!

This looks awesome.

I agree it needs some space optimization, but damn it does look good like this!

Amazing design and work. I have been following you for quite some time and will continue to do so. Thank you.

I really think that you don't get enough attention, this is really amazing

Amazing Design

Really looking forward to the full engine swap. This Looks really promising and I like the idea of getting rid of all the waste with traditional multicolor printer with something like the mmu from Prusa. Definitely more complicated but in my opinion a better product in the end

Brilliant, absolutely brilliant. Very impressive work.

Amazing work as always. Really appreciate the in depth look at the design so far!

Beautiful work, very inspiring! Can not wait to see the iteration where the center of mass is more directly over the linear rail. Also love the video.

This is all sorts of awesome, thanks so much for sharing the video, and for making your designs available.

Love the design, i am still a noob in 3d printing but might try this on my printer. Amazing design!!

Awesome design. I have been waiting for it and will certainly be trying it on my enders. Good work Mihai (y).

Awesome work.

Mihai, this is awsome! Keep rocking! Greetings from eastern Serbia!

Wonderful work. And well explained. Keep sharing knowledge.

Great work. Nice to see someone trying to push things forward :D

These are some of the best 3d printing hardware designs I have ever seen. And it is great! :) At this stage sitting with a clogged nozzle in my Prusa mk3; hence pitstop will be one of the first things when this is sorted, hopefully tomorrow.

Incredible work here! Awesome project 👏👏

Very clever locking mechanism! Making it free for personal use is generous. I think on the prusa frame you could put the motor behind the rods and use a planetary gear set to reduce the stepping, then could make the output shaft poke forward between the rods to drive the filament. It reduces the hotend Y offset and makes the head more balanced. On the Ender frame you could just make the motor sit above the crossbar for the same reason.

2:04 It might be a good idea to install the pogo connectors on the extruder itself to avoid short circuiting the main board 🙈 But fantastic work! It looks like a hell of a lot of brain work. 👍

Wow you've come so far! Revolutionary stuff. Seriously impressive dude, keep it up!

Thank you for your work!

Interesant! Mult succes și la cât mai multe invenții îți doresc!

Very interesting, I really like this project , I may work on it

Very nice! I'll be following this!

this looks like an awesome project, i will definitely follow along!!

Wow nice work 😊👍

Awesome work like always. You are awesome!

This is awesome!

I'm so existed to see the end result. It's whey cool Michai. Let me know if you like some explainer our anything for explaining the setup :D

Fantastic work!! You could try moving the extruder motor/transmission behind the carriage. If you used maybe a belt transmission you could have dual bearings on the driven pulley axel so it wouldn't need to be supported in the front. It would help balance the weight but would reduce the y travel.

Really a nice and smart design👍.

Very cool project. Would love to build it myself. Another very important downside is the higher weight for the travelling, what means reduced printing speeds overall.

This is sick af.

This is brilliant. It would be great if we could also redesign the hot end wiring. It always seems so messy.

Can't wait to try this out on my Anycubic I3 Mega S :) Love the video as always Mihai

I love this project, is so usefull!

Cant wait.

Very nice!

Bravo Mihai, foarte mișto

Fun and good project! I think your number one design challenge is the distance of the nozzle to the linear rails. Besides I think that that edge where that bearing touches in order to grip the filament might be too thin.

This is amazing!

Awesome, I've subscribed to your channel to follow up all your work 👍

In the current design your extruder motor is in front of the X axis. If the motor were to sit on top of the X axis would that balance the print head more? Or if you were to extend the back of the print head assembly to hang over the back side of the X axis that might give you more balance. This also might give you more space for the hot-swap components in the front, as well as space for the fan to mount lower down.

Once you get the RFID working, you could add a seek function to the engine swap picker to look for a specific nozzle so you don't have to tell it exactly where to pick from. I'm interested to see how you handle filament pathing so that tangles can be avoided.

YAAAY!!!!!!!

I love the idea, but it does look like it’s grown a bit big! Maybe a little refinement to make it smaller in the next version. I see the hot end will only be powered when it’s locked into the carriage, so if you are changing material you will need to wait to heat up before you can start printing, with lots of colours it could add a lot of time. Also the heat sink is only cooled when in the carriage so when you remove a hot extruder you will either risk heat creep blocking the heat sink, or parts melting around the heat sink, unless you plan to also let the hot end cool down in the carriage before removing it, which also would add a huge amount of time. Maybe you can design the extruded holder have a large fan that ducts air to all the heat sinks when sat waiting.

Really gives me the Makerbot Method X extruder vibes. Really nice design! ouob

Awesome idea

super idée et conception, attention peut être, a la différence d'hauteur entre chaque buse qui risque de décaler la hauteur du Z au changement de buse !

Nice!

wooow is very cool, you are really the best and very very ingenious

I love the idea and the concept, but there are so many modifications that perhaps you should start your own 3D printer company or 3D printer open-source design.

Could you mount the engine swap on top of the printer?? That would save a LOT of space and make the whole thing seem smaller bc you don’t have the engine just parked on the side. It might be tricky to get the swapper down to the extruder if it’s way up on top, but If you wrote into the gcode to go up to the top it might be more doable. Really really awesome project man love your work and will definitely be supporting

Great idea

Nice work. The filament swap looks like it would be a little scetchy for flexables. Maybe a notch that pulls the extruder open wider?

Yes! a full video and not that shitty #shorts! 👌

Add an enraged rabbit carrot feeder for ultimate swapability

this is great!