aarn_wrks_dsn

tomii/aarn: available now: tomii + 44rn 1x 130#44 road chainring [bicycle]

Tue, 19 Mar 2013 09:21:39 -0400

The idea for this chainring started so long ago that I can’t even remember when it was. Nao Tomii was having a hard time getting his machine shop, for the now retired 3RRR product line, to make some necessary changes to the tooth profile that he had been using for his track chainrings. He came to me with a sketch of this chainring that made hearts with the spider pattern of the crank arms. Originally it was a track ring (144BCD), then it was a track-style ring that fit onto a road crankset (130BCD), then finally it ended up as a one-by-n road ring (3/32”) in 130mm BCD and 44 teeth. This happened over a period of three or four years, we even made some prototypes in each style over the years.

There are a few elements of the design of this ring that I think are interesting…After Nao passed the rough sketch to me, I wanted to add some features that were consistent with the overall idea of the ring, so I incorporated the heart cut-out around one of the chainring bolts, and a variable radius blend on the inside of the heart shape to soften that feature. I also thought that it would look sharp if the teeth of the ring blended into the nameplate. I wanted to avoid having gunk build up at the seat where the teeth meet the ring body, so instead of putting a sharp corner there, the detail is milled out with a ball endmill.

Another unique aspect of this chainring is the application. A lot of people (myself included) have bicycles that run a single ring up front with a multi speed cassette in the back. The idea of making a tooth profile that is not designed for shifting, but is designed for tighter engagement with the chain when used with up to a ten speed cassette in the rear, was intriguing to me. I took some liberties with the design, and the prototype got good reviews during the field test. The ring will work with a chain catcher/keeper like the Paul Components version, and fits snugly on all of the cranks tested.

These chainrings are a little more expensive to make than the track ring that I have previously released, just because of how much machining is required to make each, so the price reflects that increase. Manufactured in Peabody, Massachusetts, USA, from certified 6061-T6 aluminum plate stock. These chainrings are fully CNC machined. All edges (front and rear) are machine broken with a 45-degree 0.010-in deep chamfer. Product is packaged in brown paper with a QC certification label and number, and shipped USPS Priority Mail.

The price is $88 + S&H, there are 50 rings total available (26 Black and 24 Clear/Silver). Get it here.

[Photos: Nao Tomii]

available now: limited edition cuppow in color! [product]

Tue, 13 Nov 2012 14:11:59 -0500

Full press release is located here. Available at Cuppow.com. Click “Buy Now” for details about our product line.

available now: 44rn 144#47 chainrings [bicycle]

Thu, 08 Nov 2012 14:57:00 -0500

In black and silver exclusively on Prolly Is Not Probably. Limited quantity available.

geekhouse/aarn: road/cx dropouts for geekhouse bikes [bicycles]

Thu, 01 Nov 2012 16:09:00 -0400

The 2012 batch of Geekhouse Bikes CX frames feature a new custom dropout design that I have been working on for Marty since the spring. My goal with this design was to create a modern-looking dropout with very clean lines, to compliment the TIG welding process, and be consistent with the family of previous design work that I have contributed to Geekhouse.

I spent a lot of time trying to figure out how to tastefully use layering of material thicknesses in a single part to create a visually more complex structure, without making the dropout look too techy. Overall, I am happy with how these turned out. At first glance, the dropouts look very plain, but there are a lot of subtle details in them. I think that the blends and surfaces in the final machined parts look nice and simple, and Richard Defrancisco, at Cantabrigian Mechanics, did a great job machining them.

Marty and I are going to do some updates to the design after we get some feedback from the first batch, before these go onto regular production frames.

[Photo #1: John Watson, Photo #3: Geekhouse Bikes]

aarn: e2 47.18 sunglasses [eyewear]

Mon, 15 Oct 2012 15:31:00 -0400

Numbering systems are way more timeless than names, but if I had to name this frame, it would be called “The Worrier” or “Elton John John John.” Now that that’s out of the way, let’s talk about the numbers, “e2” because this is the second pair of eyeglass frames that I have designed and fabricated, and “47.18” because that is the size of these frames.

With eyewear, scale is a particularly difficult thing to judge, especially because the glasses need to fit some pretty complex and diverse facial geometry. The completion of these frames has brought me technically much closer to where I want to be with the process of designing and fabricating eyewear, but the fit part is going to take me a while.

This pair took me about 20-hrs to make, spread out over three days. It started with a sheet of NOS Mazzucchelli Tectonic tortoise shell cellulose acetate (probably from the 70s), laminated in the nose pad region and CNC milled for the rough form. The frame was then hand filed for appropriate contours, grooved for lenses, fit and drilled for hinges, riveted, filed again, glazed, heat formed, de-glazed, wet sanded, polished, assembled, polished, re-glazed, temples formed, and then washed.

I compiled some of my initial sketches and notes since the last frame into a nice collage, which shows part of what had to happen on the back end before anything was modeled or any cutting occurred. Stay tuned for another pair in a month or so.

Photos (Big thanks to Andrew for being my fashion model)

luxe/aarn: luxe wheelworks custom skewer replacement lever [bicycle]

Tue, 09 Oct 2012 13:52:55 -0400

Sometimes when working on a project you have to give up on an idea with which you fell in love. Partly as a jab, and partly because it was perfect, I pitched the idea to Justin Spinelli, of Luxe Wheelworks, for a design that incorporated the setting of a Swarovski crystal into the skewer lever for his custom built wheels. How Luxe would that have been?

Anyway, after a few changes we came up with the current version, which just came back from the shop. This lever is swiss milled out of 6061 aluminum, then anodized black, and then laser etched with the Luxe logo on both sides.

The lever replaces the stock plastic lever on the Joy Tech skewer system. Rims for your rims. Available on Luxe Wheelworks stock in-house builds soon.

Photos.

aarn: frame builder: teaser [eyewear]

Tue, 31 Jul 2012 14:59:49 -0400

This post details not a specific project, but one of the most important decisions that I have made recently concerning direction, work, and process. About two years ago I started working with a local eyewear company to help them develop a new production frame. I tried hard to learn everything that I could about the process, but at the end of the project I had a lot of questions. For the last year or so since that project ended, I have found myself more and more interested in this industry, perhaps because there is so little information about process and because manufacturing techniques are so guarded. A few months ago, I decided to take the plunge and start to assemble a better working knowledge of the process of designing and fabricating glasses frames, more specifically cellulose acetate plastic frames.

I’m not trying to specialize into this industry, but by acquiring a “strip-built canoe” or “ship in a bottle” type project, I will attempt to be more connected to the process of refining an art/skill instead of working on projects solely towards the goal of completion. I am not going to stop designing other devices and products, but this project will hopefully be in the background, slowly maturing. This is the first pair of sunglasses that I have designed and made from scratch. The frame is made from vintage Mazzuchelli tortoise shell acetate, and the lenses are custom cut plano 6-base CR-39 plastic.

I have read that there are something like forty-two steps in manufacturing a hand-made pair of acetate glasses frames, I think that I have figured about two of these steps out so far. I have a long way to go on this one, but each new detail is exciting. Stay tuned for updates on this project, I should have time to knock another pair out in 2015 or so.

aarn: cuppow regular with straw-tek advertisement campaign [product]

Tue, 31 Jul 2012 12:33:00 -0400

I directed, shot, and edited these three spreads as a part of the online ad campaign for the new Cuppow Regular with Straw-Tek product release. Illustrator Natalya Zahn did some additional edits and sketched some of the graphic elements of the product packaging over the photos.

aarn: available now: cuppow regular with straw-tek [product]

Tue, 31 Jul 2012 12:28:27 -0400

Joshua and I introduced the second member of the Cuppow family earlier this month, with the birth of Cuppow Regular with Straw-Tek. Cuppow Regular fits on regular mouth canning jars while Cuppow Wide (what we are calling the original Cuppow now) fits only wide mouth canning jars. In an attempt to keep this product different from the Cuppow Wide, we approached the product with a different form in mind. Also, we added a diamond shaped spout opening—which we were jokingly calling “Straw-Tek” during development—to allow for a variety of flexible straw sizes to be retained (from small to the garden hose that McDonalds offers) if you should choose to use a straw instead of just sipping from the spout.

I guess that the whole Straw-Tek naming thing was kind of funny until we trademarked it and put it on the packaging. It was the perfect name and allowed us to highlight a significant feature of the product which would have otherwise gone unnoticed. A major reason for adding straw compatibility was to appeal to the smoothie and cocktail user base, since regular mouth sized canning jars will thread directly onto the blade base of most household blenders, and also to further separate our two products. Visual separation of the two products was very important to us because, for the most part, the only people who can tell the two sizes of canning jars apart (wide vs regular mouth) are the two of us, and avid canners, however; our market is much less specialized than that and we needed each product to have its own identity.

Right around the time of this product release I wrote a case study in collaboration with Raymond Hu for Core77 about the process of wrapping up a six month development cycle of the two Cuppow products and about our focus on a local supply chain. There will be a follow up post on the process of designing new packaging for both Cuppow products in the next month or so.

aarn: "prolly purple" 144#47 raidô contest [bicycle]

Tue, 24 Jan 2012 13:34:43 -0500

Prolly Is Not Probably is doing a contest to promote a new category of content on his site devoted to photography (and maybe stories?) depicting cycling as a more spiritual/emotional journey. It’s a mature direction for John’s blog and we can definitely expect to see a new angle of well-developed content from him.

I sent John down three of these “Prolly Purple” anodized 144#47 chain rings a few weeks ago, and the winner of the contest will get one. Only three were made, only one is getting released to the public. Depending on the rest of your build these could just scream 1990-something, or be super classy.

[photos: Prolly]

aarn: available now: cuppow [product]

Tue, 10 Jan 2012 09:00:00 -0500

It was probably right around the beginning of spring last year when my friend Joshua Resnikoff said that he wanted to talk to me about an idea that he and his wife Christine had been bouncing around. Resnikoff, who was/is finishing his masters of science in biomedical engineering at Tufts, wanted to make a to-go cup lid for a mason jar. At first I thought that it was a dumb idea, but the more I thought about it, the less dumb it sounded (and now I don’t think that it is dumb at all!). I did a little research and came up with a potentially novel retention and closure technique. I designed a version that was made from stainless steel and hydroformed from a disc of sheet stock.

We then realized that due to the temperature issue with the stainless and potentially hot liquids inside of the jar, that plastic would be better. I did a rough plastic design, and a few months later we had an SLA prototype made. I kept tweaking the design, but nothing too ambitious happened again on the project until we stumbled upon an amazing intellectual property lawyer named Noah Sachs. Once a lawyer was on-board things really started to move…that was about a month ago.

We put together an awesome team of designers and creatives, all of whom work with/near me at Fringe. After the plastic design was finalized and material was selected, Natalya Zahn (who works about 20 feet behind me and 2 feet to the right) designed some amazing packaging graphics based on the geometry of a custom die that I had brainstormed together with Mike Dacey (of Repeat Press, 10 feet to the right of my desk). Once the packaging graphics were done, those were passed 100 feet down the hall to Mike Kivikoski (from Atedrake) who designed a website around the aesthetics and color palette of the packaging.

Once the custom die for cutting the packaging and the printing plates arrived, Mike Dacey printed and cut the packaging in his letterpress shop (15 feet to the right of his desk). Then Stebs Shinnerer (of Paper Fortress Films) got involved and shot and edited a promo video in one day (10 feet behind my desk), and we finished up with a photo shoot in New Black Studio (10 feet behind Stebs’ desk). These people are amazing. I could not be happier with the completed product. Check out the website and buy a Cuppow for only $7.99!

[edit] Here’s the promo video!

fringe: now open: process by fringe [retail]

Mon, 02 Jan 2012 15:54:03 -0500

We over at Fringe in Somerville, Massachusetts, have a pop-up shop/retail experiment going on over at Grand at 374 Somerville Avenue. Jon and Wendy from Grand were kind enough to rent us half of their space for the entire month of January…so we set up shop.

The space is arranged with a little spot for everyone from Fringe who wanted to be involved. It’s kind of a hybrid gallery-store.

I have a little table with a bunch of stuff on it, including the tab desk lamp, the turntable bounce light, t0001, and some chainrings, along with some sketches and process pieces or prototypes of each.

Check it out if you are in the area. Also, Fringe has a tumblr now, so make sure to follow fringeunion.tumblr.com.

aarn: tab desk lamp [furn]

Fri, 16 Dec 2011 08:37:00 -0500

For over two years I have been making sketches and designing a series of furnishings. As my interests and experiences expand, the designs have been becoming more complicated and their manufacturing has come to involve a greater number of processes.

Limiting myself more-or-less to the processes/capabilities available in my slowly growing office shop has allowed me to pick a few materials and processes and/or techniques that I am really into, and refocus my designs around them. The drawback of this approach is that it is possible to easily design beyond your capabilities (when you are planning to do all of the manufacturing/fabrication yourself).

The Tab Desk Lamp is a project that I created for myself almost exactly two weeks ago as an opportunity to try out a few new techniques without the risk of wasting money on materials, or encountering failure on some of the more complicated projects that I have been planning. Also, in acting as my own shop, I created manufacturing drawings for each part, and directly followed them during fabrication.

I have wanted to cut glass with a waterjet machine ever since I learned that it was possible. Originally, I had a sheet of 0.150-in thick tempered glass laying around that I wanted to use…ends up that tempered glass explodes as soon as the pressurized beam of water touches it. I found a place that sold me “used” 0.375-in thick plate glass as a replacement. (Thanks to my friend Steve for the waterjet parts)

The formed aluminum bulb frame tabs through the glass, and a raw porcelain panel-mount light socket is attached through a hole in the sheet metal. When the bulb is installed, it locks the glass in place. This fixture was designed around the exact geometry of this 25-watt globe light bulb. The glass plane is centered around the origin of the bulb sphere, which I thought would allow for the most light to be piped through the plate glass - and look cool.

The upright of the lamp is ⅝-in OD stainless steel tubing, bent to 110-degrees - which creates a vertical upright when mounted to the adjacent leg of the right-triangle sheet metal formation base. At the top of the upright, where the bulb frame attaches, a stainless steel fixturing washer was TIG welded onto the tubing. The bulb frame is sandwiched between the stationary welded washer, and a loose washer, and clamped in place with a shaft collar. The bulb frame can rotate around the upright about 20-degrees in either direction before the balance of the light is compromised. I made parts for two of these lamps, but I have no plans for offering them to the public at this point. Big thanks to Stebs for editing my sloppy process footage together into something awesome, and letting me use the gear at New Black Studio for the photos. Media for this project is here.

MWM graphics/aarn: 3d numerically controlled drawings [misc]

Mon, 28 Nov 2011 11:01:21 -0500

After I had completed the black and white Sharpie drawings for the Numerically Controlled Poster Series with artist Matt W. Moore, released over the summer [see MWM graphics/aarn: numerically controlled drawing series [misc]], I decided to do some experiments with some colors. I had one fresh red Sharpie and one blue on hand. I did one pass with a red marker at 100%, and then a second pass where I scaled down the blue layer to 98% and centered the transformation around the center vertex in the artwork.

When Matt came to pick up the other drawings, I gave him TWO of these 3d drawings. He released them on Black Friday, and they are for sale in his online store along with the remaining black and white drawings from the original release. Scoop them up.

[photos: mwmgraphics]

aarn: pre-order now: 144#47 track chainring reissue [bicycle]

Sat, 12 Nov 2011 15:24:00 -0500

I’m doing a reissue of the track bicycle chainring that I released back in September (see aarn: available now: 144#47 track chainring [bicycle]). The response was really great, and I sold out of the fifty that I had made in just over a week! This time, I have teamed up with Prolly Is Not Probably for an exclusive pre-order through his website. I will only make as many of these as people order, so if you want one get to the PiNP store during this pre-order period. The pre-order will only last through next Wednesday or so (November 16, 2011). It is likely that I will not do another run of these. Specifics of this ring are identical to the first release: 144BCD, 47-Tooth, for 1/8” Chain, Black/Silver Anodized 6061-T6. I have optimized a few of the dimensions, but it’s nothing that most people will notice. If you are curious how the chainring looks on your make/model of crankset, check out this flickr set that I put together with some photos from people riding them.

Thanks again to John for putting this reissue together (and taking the sweet photo: top).

[EDIT] I had to order more pieces than the pre-orders that I got, so I moved the pre-orders over to my sales page. Rings will ship the week of 12/12, the order is currently in production (noted 11/30).

geekhouse/aarn: raw oregon manifest custom dropouts [bicycle]

Thu, 27 Oct 2011 15:51:00 -0400

Since there were so many custom parts and designed elements on with the Oregon Manifest design competition entry that I worked on with Geekhouse Bikes (see geekhouse/aarn: oregon manifest utility/cargo bike [bicycle]), I decided to put together a post with a few shots of the raw dropouts. I went by the machine shop the other day and the machinist had made an extra set of these for me.

On the final build, these dropouts were slotted from the back - much like a normal track dropout - but originally these were a modification to a 5mm allen head dropout that I designed for Marty prior to 2011 NAHBS. I designed simple front and rear dropouts that both used a stainless steel carrier which allowed for a flat head cap screw to be used with hubs featuring internally threaded axles. These didn’t make it to the show for a few reasons (the customer didn’t like them) ~~- so I’m going to ghost-of-done these onto my blog.~~

[edit: drawings removed - I guess they are going to go on a Geekhouse soon - Stay tuned for that]

So, anyway, the OR Manifest dropouts were standard 20mm track nut versions of these dropouts that never got made. Plus, the tabs were designed so that they could be slotted right into the exact diameter and bend radius tubing that was used for the “stays” on the manifest bike.

The rear end of the manifest bike was a little more rigid than Marty had expected, so it just made sense to slot them from the rear when the bike was being built - especially considering that they were not designed for full-width axles. ~~Just some ghost-of-done stories before Halloween for everyone. I’m just going to keep referencing this until everyone is on the same page.~~

new black studio/aarn: studio sign [misc]

Fri, 14 Oct 2011 16:47:10 -0400

I cut a sign for Stebs (Paper Fortress Films) and Alicia at New Black Studio. New Black Studio is the photo studio here at Fringe that they have been revamping and outfitting for rental use, as well as for internal projects. They have a lot of gear that is available for rental (strobes, rigging, etc.) and the studio is looking pretty good. I am not a sign-maker, this was just a favor for some pals.

They dropped off a print of what they wanted on my desk with some rough dimensions. I cut the sign out of 0.050” aluminum sheet with my CNC router, then attached it to spacers and taped that to the wall. One day later the whole sign had fallen down. So I used some tapcons and attached some plexi to the wall and then glued the spacers to that. I wasn’t happy with how the plexi looked against the wall, so I came back with a hammer and roughed it up a bit to give it that hot shattered glass look. And…I’m just realizing as I write this that I hung the “A” backwards…another reason why I should not make signs.

I took some pictures of the sign when I got it up the second time. Hopefully it will stay put.

Stebs gives me the thumbs up while he holds the flash for my photo.

royal h cycles/aarn: seat stay caps [bicycle]

Fri, 07 Oct 2011 16:27:00 -0400

Took me forever to get around to documenting this little bike bit. Months and months ago, Bryan of Royal H Cycles walked out of his shop, and over to my office (about 10ft). He placed the following items on my desk: a rusty old seat stay plug, a sticky note with some specs, and a drawing in pencil.

A month or so later, we had some of these dudes made in stainless and 4130. Turning a sketch into a 2d/3d model and eventually a tangible part is a process that I have become more adept at over the years (both from my own sketches and others’), but there was something crazy about the pencil drawing that Bryan handed me. It took me a few tries, but I finally got it where I liked it. Bryan has put these on a few bikes at this point, and they look pretty sharp.

First photograph is by Jonathan Henig, it appeared in a post on Bryan’s Blog.

The stainless caps first appeared on a bike for the people over at Lovely Bicycle.

geekhouse/aarn: oregon manifest utility/cargo bike [bicycle]

Tue, 27 Sep 2011 12:19:00 -0400

Back in March, I was walking around MoMA in NYC and I got a call from Marty from Geekhouse Bikes, wanting to know if I would be interested in submitting an entry to the Oregon Manifest competition with him. I guess that I said “yes.”

Marty, Greg, Brad, Robot, and myself sat down in April and started to hash out ideas for different functional details for the bike. Greg had put together a bunch of blank bike templates to draw over, and they had selected their favorite. In the next month or so, Marty and I developed the geometry for the bent tubing in software, and worked out ideas for the custom dropouts and features.

Really nothing happened again on the bike, except brainstorming and sketches, until mid-summer, when we had some dropouts made and I started playing around with some ideas for integrated frame elements using the CAD drawing that we made.

I thought that it would be really cool to use sheet metal to make some non-traditional custom fenders for the bike. I wanted the rear fender to be a single assembly with mounting features for the chain guard - to add some continuity to the overall look of the bike. After the rear fender was designed and styled, I designed a front fender, and eventually a chain guard for the bike. The flat pattern sheet metal parts were tricky to design, due to the geometry of the bike, and my desire to keep the part count low. I used locating holes on the rear fender to indicate where the bends needed to be, since there were no square edges to snap a line off of, once the part was cut. The back end of the bike frame tapers out, so the rear fender, as a flat pattern needed to splay out accordingly.

The chain guard is probably the part with which I am the most satisfied. It is a single sheet metal part that is bent and then the front is rolled onto itself and riveted to a tab. In order to make the gap distance less critical (and avoid having to weld anything) in the region that is concentric with the chain ring on the front side of the chain guard, I turned the gap into an aesthetic feature…which worked out well. All of the sheet metal parts were cut on my CNC router and fabricated in-house. With the exception of one very minor tweak that needed to take place, all of the parts worked out on the first shot at fabrication, which I am very happy about.

Robot sent us some specs for the LEDs and circuitry, and I was at Geekhouse wiring up the bike until 4am on the day that Marty and Brad were leaving for Oregon.

On the Manifest: I really wish that there was more media coverage during the event. Being all the way on the other coast, I was hoping for a little more information on the internet. The competition itself brought out some of the best custom bikes that I have seen. I was/am proud to have been able to show work in the field with the other entries. We didn’t go into the competition thinking that we would win, but it made not winning that much easier seeing the number of really awesome bikes that were in attendance.

Studio shots are from Oregon Manifest and Chris King Cycle Group. We didn’t even get a chance to take a decent picture of this whip before it got packed up.

Marty has a lot of process shots up here.

My media is here - Will update with new shots.

~~I will post some better shots of the chain guard and some of the details once the boys get back from the wild west.~~ Thanks again to Geekhouse for involving me in this process. Marty and Brad are both super talented and a pleasure to work with.

aarn: available now: 144#47 track chainring [bicycle]

Mon, 12 Sep 2011 08:25:00 -0400

This is my first self-branded product. Before I get into the details, these are available in black and clear anodized finish for $67 in my online store. Store is located here, here, and here. Quantities are extremely limited. I had 50 total made; 30 in black and 20 in clear. Other than the anodizing treatment, all of these bicycle chainrings are identical. The bolt circle diameter is 144-mm, and each has 47 teeth. Chainrings are designed for ⅛-in track/bmx chain.

Let’s get into the details - I had been searching for the right machine shop to make these chainrings for about eight months. Finally I decided on a two-man shop in Peabody, Massachusetts, USA. I am very glad that I waited, because I have not seen CNC machining of this caliber in a long time.

The attention to detail that the machinists paid when crafting these can be seen in the quality of the end product. The rings were fully CNC machined from certified 6061-T6 aircraft grade aluminum plate stock, then lightly buffed and delivered to another local shop for black and clear hardcoat anodizing.

At no point in the process of making these chainrings did a file or manual deburring instrument touch the parts, every single edge on the chainring (front and back) has a precision machine-broken 45-degree 0.010-in deep chamfer. A custom 20-degree chamfer tool was used to precisely bevel each tooth during the machining process. In addition to the quality of the machining and finishing, each part was labeled and inspected before it left the shop. The black anodize is as black as it gets, and the clear anodize is crisp and clean.

Prior to selecting a machine shop, I machined prototype blanks (chainrings with no aesthetic features) with the new tooth profile that I had been developing. I gave these hand-numbered blanks to friends and had them roadtest the fit, noise-level, and wear of the tooth profile. Noise-level might seem like a strange parameter on which to conduct performance tests, but I was trying to get the widest quiet-running tooth possible. Wide BMX-style teeth grind and grate until they are broken in and I wanted these chainrings to be smooth and quiet from day one. I also went through a dozen or so designs before settling on the the cut-out design and labeling scheme.

After I had selected a machine shop, I cleared out my Roth IRA…I mean Apple stock…I mean piggy bank to finance these chainrings out of my own pocket. To keep costs low I have marked up these chainrings $17 each, and am offering them to the public directly. MSRP on these chainrings would be more than $100 if I tried to distribute them to retailers because of how much I paid to have them manufactured. Most chainrings coming from China cost about $10 to make (I know, I sent out some requests to shops in China to see what was up), mark-ups from distributors and retail shops comprise the rest of the sticker price. I am trying to provide a limited-edition, high-quality, locally-made product at an affordable price point. Each part is packaged in brown paper with a “QC Pass” inspection stamp, and numbered (x/20 or x/30 depending on finish color).

Get ‘em while they last here.

Media can be found here.

I’ll be putting some shot up of these on a bike very shortly, I just got them in on Friday and wanted to get them live.

Prior art: aarn: boring 42th chainring v2 [bicycle], aarn: 42th prototype track chainring [bicycle]

[edit]

Rings on some whips:

(Party chainring photo by E. Baumann)