Turku: Presentation & summery

For the first time since I got back from Finland, I strapped on my tights, beanie and running shoes, and ventured into an absurdly warm november evening to frighten people by doing wheezing and shuffling noises. It went well. And to rekindle another positive habit I entertained in Turku, I’m posting another video from my residency; I finally have an edited version of the presentation I gave at the end of the project.

It’s just short of forty minutes, and it includes a short backstory of me and projects which seemed relevant to fabbing, a brief timeline and explanation of 3D printing in general and the RepRap specifically, and then an overview of how the project changed during in the process of realisation.

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Turku: Spatial presentation

As my residency is coming to a close, I’m getting to the things I’d initially thought I’d get done the first week. Like for example putting up a presentation of Gallery Titanik where the residency is housed. With the co-operation of Kimmo Modig, the director of the gallery, I finally got around to it.

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Doing the RepRap #13 — Printer finished

It’s been a long road, but my Reprap Mendel Prusa 3D printer is finished and I’m printing stuff. There have been so many problems and fuckups along the way, that when I finally started printing stuff a week ago I didn’t think much of it, but with hindsight it was a Grand Moment™. I’ve joined the ranks of 3D printers. You may now commence the “oohing” and “aahing” I understand are my dues.

So far, with the exception of a frog and a replacement LM8UU Y axis holder, I’ve mostly been printing calibration cubes. These are shapes intended to troubleshoot your printer and give you an opportunity to get your Skeinforge/Sfact setting correct. As you can hear in the video there’s some rattling going on on the Z-axis, and I have some trouble with Y-alignment on some prints, but with lowered acceleration on Z and Y, and perhaps tightening of the belt on the latter, I think I’ll be able to print halfway decent parts.

Sara came over for a few days, and as any good boyfriend I set about making her feel comfortable helping out with the build. It was much appreciated as it often seems I have three hands too few to get something assembled. Making the print bed was slow going, and as I’m using plexiglass for print surface we broke off a couple of pieces before getting a more-or-less square one. The plexi is actually good for printing on cold, at least once the PLA starts sticking to it, but if your hotend gets too close the PLA fuses with the surface, and you’ll inadvertently run the head through the board which will create pockmarks in the surface, and possibly plug your nozzle with plexi — which is the reason I’m printing with the 0.5mm nozzle instead of the 0.35 I started with.

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We were leveling the print table for a good two hours, and found that the design with springs between the lower and print bed wasn’t optimal, since the springs were unevenly springy. I had bought a whole kit with the suckers but none seem to fit well enough and give enough force to work. It’s a good design on paper, but we found that it was just easier to use two sets of nuts per fastener bolt. Protip: Get spanners which fit instead of fiddling with adjustable ones or pliers; it’ll save you so much time and temperament it’s worth the expense.

At this moment thanks might be in order. A great amount of those go out to Traumflug for design and massive help with the electronics, and Kliment, Triffid_Hunter, Action68 and everybody else who’s been quick to lend support in #RepRap on IRC or on the reprap.org forums. When you’re as ignorant of a subject as I was about the RepRap, you rely on the help and input of friends and strangers, and without the support of everyone from awesome girlfriend Sara to KKV electro to that guy who barely spoke English but cut me some metal rods, this project might have fallen over and not gotten up after any of innumerable stumbles.

Of course, thanks to the people here in Turku for providing an incentive to start this, as well as the means and time to finish it. Ultimately, bigup to Adrian Bowyer for getting the RepRap project started, as well as all those who keep improving upon it. I have a public presentation of the project on Thursday 6th October at 1800 in Gallery Titanik in Turku, and if you’re nearby I’d love to see you there.

Doing the RepRap #11 – Frame & motors

I got the frame of the Prusa more or less assembled, even though I still need to make sure that it’s straight and so forth. The motors are mounted and connected to the correct rods or belts, and they are stepping at 1/16 nicely, although the LM8UU bearings don’t seem as smooth as I’d like them to be; I will probably re-assemble the Y-carriage whenever I add the hotbed, seeing as that might be cause for some misalignment and grinding.

Robin from the forums popped by the studio and we compared builds and I got some advice which is always welcome; where to source materials, in what order to assemble specific parts, why patience usually pays off better than a flamethrower, etc.

The long M3×60 screws for the adjustable extruder have proved elusive, so I’ve gone for an M3 rod I’ll put wingnuts on. Once you get warmed up and understand how things are supposed to fit together and what functions they perform, you relax enough to improvise. It’s a good feeling. The Makergear hotend shipped with a mounting plate which doesn’t fit my Accessible Wade’s Extruder so I schlepped the studio bike around looking for 4mm plywood to drill a replacement. Once that’s done and the hotend built, I’m pretty close to testing to print.

Perhaps I’ll be able to melt som plastic into a horrible blob in time for tomorrows opening of the new show here at Titanik and impress Sara who’s coming over for a few days. That would be most excellent.

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Turku: Walking and crossing

Perhaps I ought to learn at least some phrases in Finnish. I feel as close to an imperialist as I’ve ever have, asking people “svenska, talar du svenska?” all the time. Case in point: I forgot to bring a carry-around bag so went hunting for one in second hand stores. In one cramped store I find a cloth bag but try to ask the older lady if she possibly has something similar but with longer handles, appropriate for fashionable slinging up on ones shoulder. I go through English and Swedish and pantomime and am bringing out my notebook for some Pictionary, when both she and her co-worker just wave me out of the store, with a “thank you” (unless “kippis” has a second meaning, such as “shove off”) and gesturing that I can take the bag and leave. At least I hope that’s what they meant, but for all I know they thought I was telling them to “put all your money in this bag, make it large money,” and they were thanking me for not hurting them. I don’t know.

I had ambitions when I first got here that I’d use the time to whip my pasty butt into some sort of shape resembling an actual butt, and started out strong with jogging every second day and even going so far as to checking out the dorm gym. A week later I’m feeling a slight cold coming on and I’m drinking beer and eating crisps for dinner. I’m sure there is a middle-ground somewhere, but I’d be fucked if I can find it. I do hope that I’ll keep up the running though, if for no other reason than to balance out the hours sitting in the studio poking at the RepRap.

Speaking of which, I’m having some progress in the building department, and have half of it put together already. It’s probably the most straightforward part of this whole endeavor, and mostly entails following instructions and spinning a lot of bolts onto rods and such, but at least there’s a physical thing I can point to and say: Behold! Yesterday twas but a heap of rods, today it stands on it’s extruded feet. Verily, progress! etc. etc.

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Two more observations regarding the traffic in Turku: First off, the bikers here drive poorly, often on sidewalks or against the flow of other bikes, while at the same time not signaling. This is in large part because the bike lanes are merged with sidewalks more often than motor traffic, and it’s just too crowded with pedestrians to allow smooth going.

Secondly, drivers are much less likely to stop for you at a zebra crossing, even if you’re already halfway in the road. Anecdotal data, and so on, but it’s happened enough times for me to notice. Also, people are very hesitant to walk on red on a crossing, even when it’s safe; It’s possible they know something I don’t. My lack of inhibition in this area makes me feel very low level badass, as pedestrian badassery goes.

Maybe related: back home people get the hell out of the way when there’s an emergency vehicle flashing lights, while on three occasions I’ve seen an ambulance or cop car stuck behind traffic which didn’t budge. Granted, once it was an older driver obviously lost and looking for the right exit, but you’d imagine that the honking, blinking, waving and shouting police behind her was a clear enough signal. So perhaps it’s an indication of an individualistic yet wary mindset? Should one do generalizations of a whole city — nay people —  on the basis of walking back and forth along four streets for a week? Of course one should, what kind of question is that?

Turku: upsetting

Besides walking around Turku and trying out vegan cupcakes (yay cupcakes!) I’ve started work on building the RepRap at the gallery. I have all the metal bits cut to proper length, and the threads fit the screws and the printed parts I got from Greg Frost in Australia. Last night I was polishing the threaded rods, after which I realised that I could actually start assembly of the rig. I was too tired to do it yesterday, and I still haven’t decided on how to do with the bottom plate (I’ll forego the heated plate at the moment, it’s easy to drop in once I have it) but after the weekend I’ll have somehthing which actually looks like a RepRap. It will feel good to have a frame on which I could pin my ambitions literally instead of all figuratively, in my head.

Of course, the hot-end from Makergear still needs assembly — and it’s a total PITA to put together, let me tell you — and the electronics are still home to a stubborn ghost, but it’s getting there. Once I’ll relax a bit more perhaps I could actually scout opportunities to do something with the printer which doesn’t revolve around the printer itself…

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Performance bus: Turku

With my arrival date set, I was invited to go along as audience on a Performance Bus™ with a bunch of spectators and performance artists. It seemed an excellent opportunity to see the surroundings of the city as well as meet people, so of course I signed up. Ever since my ask over at Metafilter I’ve been trying to come up with coping strategies for performances, and immersion therapy might be just the thing to push me over the edge into something resembling professional behaviour.

Most of the time, I’m not comfortable enough with the form to have an opinion one way or another, but insofar as I have a taste, it skews toward those performances which don’t take themselves too seriously. A group performing in the bus did so in Finnish, allowing me to fill in the blanks of their text, or rather just focus on the rhythm and rhymes — as a result their performance was one of the more interesting ones. This goes to the heart of what David Sedaris learned from his career as a performance artist:

It was the artist’s duty to find the appropriate objects, and the audience’s job to decipher meaning. If the piece failed to work, it was their fault, not yours.

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Kimmo Modig, the director of Gallery Titanik was along for the ride to do a performance, and we spent the trip chatting about art and related topics, as well as chickpea pancakes. We seem to agree on many things, so he’s obviously a clever and sharp fellow. For his performance, people could help themselves to a bucket with all the money he’d received to do the performance; in the end he tossed the remainder into the river. Value-destroying performances have been done before of course, but I imagine that actually tossing fifty Euro into the drink feels different from thinking about it.

All in all, driving people around from one event to another is a good way to ensure a captivated audience, and it was a day well spend, especially with an excellent picnic at the end of it. You can read a short article in Finnish about it on uudenkaupunginsanomat.fi and in English on Facebook, and I’ll post some reviews as well once I find them. Leena Kela, who is the regional performance artist of Finland Proper (and who organised this Performance Bus, see video) does some other projects of her own which might be interesting to check out. For example, I’m going to read up on the outcome of Alter ego — being someone else for a month, and then having to refer to oneself in third person. “Yes, she was much ruder and ate a lot of cheese.”

First impressions: Turku

I still require parts for the RepRap, so I walked south on the recommendation that K-Rauta might stock the metal rods I need. The surroundings quickly changed into an industrial park, and shortly thereafter I find out that K-Rauta does not have what I need, unless I what I need are two burly men behind a counter. They did point me to an adjacent store which looked promising albeit closed, so I’m going back there Monday.

I’m staying in a student dorm named Domus, and have found a jogging route. The shared kitchen is a dump but there’s Al Jazeera English on the TV and a balcony I’d appreciated were I still smoking. The room is nice enough, fridge kettle shelves, and the smell of soap will be renewed once a week when someone cleans the room. Oh, and there’s a sewing machine in a cupboard, which will come in handy since my last pair of Cheap Monday jeans once again have experienced crotch failure.

The esthetics of the city is odd — it’s a mixture of fifties functionalism and drab Soviet buildings — and wherever there might have been an uncertainty about what to build, they just poured more asphalt; The roads are wide and everywhere. If there’s a city planner, that guy sure likes cars. Given a chance, I’ll ask.

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