EDIT: A lot of you have brought up the controversy around Bambu Lab, and specifically their dispute with an open source developer.

Before this video, I knew there was some noise around Bambu, but I had written it off as the normal complaints about logins and clouds. I didn't know the whole story, and I should have dug deeper before taking a sponsor. This weekend I did the reading, and I'm not going to litigate it in a pinned comment — the facts are public and you can come to your own conclusions.

Where I actually stand: I like open source, but I'm no activist — I'm typing this on an iPhone. My bar for sponsors has always been simple. It has to be something I use, something I'd recommend to a friend, and never a bike company, so I stay impartial about the thing I care about most. The H2D passed that test honestly. I'd been printing on it almost every day for a year before there was ever a deal, and everything in this video is real. But "I use it and love it" clearly isn't a high enough bar on its own. Furthermore, this homework would have taken me about ten minutes, and being busy isn't an excuse when I'm actually making a deal with someone. I need to be rigorous, period. Thanks for keeping me honest — especially those of you who made your case with facts and respect.

I love how this channel went from "let me show you how to bunny hop" to "let me show you how I designed and 3d-printed my own airless tires to see if the technology puts my valve company at risk". Glow up!

Clik never saw it coming. 😂

Doing a whole series about repairability and closed systems and then accepting an sponsorship from bambu lab is wild

That "Okayyyyy" cracked me up.

Haha I wanna see more of the interaction with that man. he rides up, "okayyy"

Huge shout out to the people that ask if you need any help. It's a simple question, but everyone that asks it has committed to your wellbeing, which can be a hefty undertaking in some situations.

Great comedic timing on the "just fixing a section of my airless tire" lol

Being able to quickly fix a section of a tire without removing the wheel from the bike is a cool selling point for airless tires. I like where you’re going with this.

Tires are tuned with air to conform to terrain and ride preference

The airless tire would be a great thing for us casual riders who do not want to maintain a tubeless system, do not ride regularly, and do not want to ride with pumps, patch kits and gauges. The weight is not a thing when everything else is considered.
The idea of being able to pull the bike out and never dealing with pumps and gauges is dreamy.
Would they dry rot?
Could the tires be tuned to change the sound maybe?!
I love this concept and I think the benefits are underestimated and overlooked.
As always, Great video Seth.

Seth you could try using a material called TPU Air, Its a TPU filament thats really soft, it could be very good for the tread and then you could just put more mass of TPU air underneath the tread which could be a bit more similar to an actual tire, and you could use it to make some bigger cornering knobs.

It’s crazy to see how slowly tire technology is evolving. Thanks for your help throughout this process!

I've never been so tempted to pick up a modern 3d printer until now, but if I do it just won't be from bambu labs due to their recent practices. However, Incredible showcase of what you can do with 3d printing and how far it's come now.

perfect colour choice 😎

Hey Seth, I just want to say, through watching your videos, you made me want to try biking again, I've picked up a used hardtail recently and have been reminded of how much I like working on bikes, I used to have a shitty SMX  kids bike, then a vintage japanese bike before moving to another country about 7 years ago and had to stop biking.

When I was working on my bike, I didn't realize that it was actually you who I was watching before, I only got reminded of it when I need to redo the spokes on this used hardtail spoke I got recently.

All I want to say is, thank you very much for the content that you do and I you forever have my gratitude for the guides you made back when I was a teenager and the endless entertainment you put out through these videos.

- Steve, UK

We are all used to pneumatics tyres nowadays, so take them for granted. However pneumatics tyres are insanely efficient in so many ways. Rolling resistance, vibration dampening, cost, etc. It's because they are just so good that it's hard to make a comparable airless product.

please make v2, this is really cool

Feels good to be back . Sup seth ! Good to see you bro

Love that those hikers checked in on you at 10:21 - never met but happy to help. ❤