I write science fiction, draw, paint, photobash, do woodworking, and dabble in 2d videogames design. Big fan of reducing waste, and of building community

https://jacobcoffinwrites.wordpress.com

@jacobcoffin@writing.exchange

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Joined 1Y ago
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Cake day: Jun 05, 2023

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Good points! I suspect the ‘even thickness’ thing came from broken up concrete pads/sidewalks/patios, where the result would be irregulary shaped on X and Y but somewhat consistent for Z depending on how well they prepped the site for the slab. In that case it might end up pretty similar to landscaping rock. In some of the photos you can see they have a much flatter top and much more irregular edges and undersides.

100% agreed on demolition practices. There’s a lot of potential in deconstruction for reclaiming building materials rather than consigning them to the waste stream. The tradeoff is in time, person hours (my grandfather once claimed a truckload of bricks from a demolished mill to build the family fireplace - my mother and her siblings weren’t allowed to come inside that summer unless they chipped cement off some bricks and brought them with them). And in materials/energy - blades for a concrete saw and power to run it, perhaps. I’m sure there are other ways to get more-or-less regular building blocks but they’ll have some cost to balance against the good of saving the materials and reducing the need for new manufacturing. Either way, there’s some cool potential. Treating rubble or urbanite like quarried stone I think fits the solarpunk ethos.

Thank you for the details on bonding concrete! I’ve used cement to patch some holes in custom-shaped, 45° concrete blocks I made once (didn’t shake all the air pockets out of the first couple) so I knew you couldn’t just stick concrete to concrete, but not how to actually go about it when you had to. I’ll refer back here if I need to fix it someday, or if it comes up in any of my stories.

Thanks!


There’s conversion to EV, conversion to run on woodgas or possibly conversion to an alcohol engine - I think it depends on what’s readily available locally in parts and energy sources. If you have a sawmill or work construction or deconstruction and can be burning wood scraps for fuel that already exist, gasification might make sense. If you live in a place with lots of sugarcane or another source of alcohol, that might work. Ideally your energy source is a waste product of something that’s already there, and your use doesn’t incentivize more deforestation etc (that’s the hard part).

I also started a list of car parts that can be used/repurposed for other tasks, mostly based on stuff I’d seen on permaculture and tool forums: https://jacobcoffinwrites.wordpress.com/2024/09/04/using-every-part-of-the-car-a-resource-for-solarpunk-writers-and-artists/ it’s intended more for writers/artists, but some of the links might be interesting.


The art of recycling/repurposing broken-up concrete (sometimes apparently called ‘urbanite’)
I stumbled onto this article while working on a photobash of a solarpunk scene. I think it does a good job of explaining the concept but there seems to be something wrong with its certificates, which might throw an error in your web browser. https://nwedible.com/urbanite-broken-concrete-retaining-wall-as-a-garden-feature/ Just in case you don't want to check the link I'm also going to plagiarize a few quotes and images from the article: ![](https://slrpnk.net/pictrs/image/3cb22499-133e-4851-b41c-36a56b0a9134.jpeg) "The marketing term for “old chunks of broken up concrete” is urbanite. Urbanite has a lot going for it: it’s durable and heavy like natural stone, reusing this product in garden and landscape design takes it out of the waste stream, it’s often a uniform thickness which makes it easy to stack or lay as a permeable patio surface, it’s often available in most urban locations, and it’s frequently free for the hauling. Free is good. Drawbacks to urbanite can include potential contamination – this is more of an concern if your urbanite comes from a torn out commercial parking lot where all manner of auto fluids may have seeped into it than from the neighbor’s pool deck tear-out. Concrete itself can contain additives that might pose a health or contamination risk, although my feeling is that old, weathered concrete has probably already leached the worst of itself out somewhere else. I probably wouldn’t use urbanite to build edible garden beds, but I can see great potential for turning this waste product in retaining walls, steps, and patio areas." ![](https://slrpnk.net/pictrs/image/03d949aa-259f-45a8-b29f-a6f0a39170b2.jpeg) ![](https://slrpnk.net/pictrs/image/95b77301-52eb-4aa4-ba21-8db8177cfb5b.jpeg) And a few examples of recycled concrete patios: ![](https://slrpnk.net/pictrs/image/862b0922-0f4e-4100-91e3-7741235bfcd4.jpeg) ![](https://slrpnk.net/pictrs/image/1691c956-6b65-404b-8486-64067d07e814.jpeg) ![](https://slrpnk.net/pictrs/image/8f593656-6cfd-4c1c-8fb5-3a45e74c2a04.jpeg) This last one came from https://www.terranovalandscaping.com/90/, which has a few other examples, including raised beds, so perhaps they knew their source of concrete was clean, or weren't worried about the potential for contanimation? ![](https://slrpnk.net/pictrs/image/fb7cb137-417d-4c98-a157-c5e72b235a9a.jpeg)
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Picture frame made from salvaged wood
This is my first step-by-step post using our local movim microblog rather than imgur. I'll upload it to [imgur](https://imgur.com/gallery/FQO6MJU) later as a backup but I'm seriously impressed with movim, very glad to have a noncorporate place for my projects. Let me know if there's any issue with [the link.](https://movim.slrpnk.net/blog/jacobcoffinwrites%40slrpnk.net/picture-frame-made-from-salvaged-wood-ftNKhh) This is another quick one but at least I remembered to take pictures for most of it. I don’t enjoy oil painting as much as I do [photobashes](https://jacobcoffinwrites.wordpress.com/postcards-from-a-solarpunk-future/) and other digital art, but it’s still a lot of fun in the right moment. I needed a picture frame for a recent one, to complete a gift to a relative. It was on a stretched canvas, rather than canvasboard, so the frame had to be deeper than normal. So decided to just make it from scrap lumber I had squirreled away. I started with this stuff. These 1 ½” by 1 ¾” boards were part of a kind of disappointing haul I got from my local Everything is Free page. I don’t remember what it was I thought I’d find there, but by the time I got to it, all that was left was this tangle of busted-up boards from inside some kind of homemade builtin cabinet. They were cracked from their demolition, and full of wood screws, but I took them because there was still plenty of good material and I think I wanted to justify the trip. I pulled all the screws and used them in another project, and when I went looking for material for the picture frame, they were pretty much perfect. Plenty of material, and I didn’t have to worry I’d use it for something better. The painting was of a rustic cabin, so the frame was going to be a bit rustic anyways, so a little battle damage was no big deal. I measured and marked them based on a picture frame my grandfather had made (I would have used it instead but it wasn’t deep enough for the stretched canvas). I cut them to length, then down to 45 degrees on my miter saw (it makes squaring up lumber and doing corners absurdly easy, I used to do them all by hand and getting them to fit was much more art than science back then.) Once I was looking at it, I realized the frame was a bit too thick, and decided to remove about half an inch in depth from the four pieces. This would be quick work on a table saw, but I don’t have one, so I marked a line and used the band saw. Then I sanded up all the sides on a belt sander until they looked good. There was a bit of stain left in deep spots from the original project, and I tried to keep some of it – I like a little character and history from the life of the piece. This wood was a part of someone’s home, they knocked it out with a sledge hammer, a weird goblin man came by on trash day and took it, now it’s a picture frame hanging on a wall. Then I had to use the router to notch the back of all the pieces to hold the actual canvas. My router was a recent junk store find, it’s the old craftsman kind that’s a hand router bolted to the underside of a little fiberglass table. I screwed it to the workbench over the lathe, down on the far end, since its out of the way and that’s my heaviest workbench. I have plans to rewire the router, so you can turn it on and off with a proper tool switch, like I did for the drill press, but I haven’t done that yet, so turning it on meant reaching underneath, feeling for one of the handles, finding the trigger and the locking button, and setting them, at which point it begins to spin. It’s awkward and I wouldn’t want to have to do that in an emergency. This was my first time really using a router on my own projects, so it wasn’t quite as pretty as I’d like, but overall it looks fine. I definitely want to replace the small, two-part fence with a taller one that runs end-to-end and gets closer to the blade. That would reduce the piece’s ability to wobble when its only braced against one of them. Once the notch was cut I found the 45 clamp didn’t work that well so I stuck each joint together with a big dab of wood glue and a couple small dabs of super glue. The super glue gives you just enough time to get the pieces where you want them, and sort of acts as the clamping force for the wood glue, which takes much longer to dry. Once it was dry, I stained the frame with Sedonia Red, it came out a sort of pink color but I think it’ll be a good fit for the white cabin with red trim in the painting, and the recipient can always hit it with a second coat of a darker stain if they choose. The last step was to add a cable to the back. They make little metal picture frame hanger things, and I thought about just cutting and bending one from a soda can, but to be honest, I kinda hate those hangers. I don’t think they work well and they feel unreliable to me. Usually I just use a strand pulled from some damaged CAT 5 wire, but this time I happened to have this metal cable left over from… somewhere? I honestly can’t remember what it came from. But it’s the sort of thing I keep because it doesn’t take up much space and it’ll be useful eventually, and sure enough it was! The loops had already been cut, so I just drilled a hole through the little aluminum clamps at either end, used the vice to squeeze them down on the wire a little extra, and used them to attach the cable to the painting. I measured both holes from the top, and predrilled them with a thin bit to make driving in the nail easier (since I didn’t want to break the picture frame. As a very last touch, I cut a tiny sliver of wood and glued it into a notch where the miter saw ripped out a bit of wood at the top left corner. A little stain blended that back in nicely. Overall, not bad for my first picture frame. It’s a little rough, but it’s supposed to look that way.
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We turned 5 1/2 gallons of expired milk into Farmer’s Cheese (Tvorog)
My SO's company handles food. Sometimes that food goes bad. In this case, they got a whole shipment of milk days away from its expiration date (at which point they can't serve it, and local food pantries very sensibly won't accept it). Luckily, they're not committed to dumping it down the drain, and they'll let us take it. Sometimes it's still okay to drink, but usually we take it so we can make farmer's cheese. This is a soft, mild cheese which makes an awesome dip/spread, or which is useful as an ingredient in other foods. It's super easy, and requires no aging, just heat and vinegar. This was our biggest batch yet. We normally use this recipe: https://www.olgainthekitchen.com/homemade-farmers-cheese/ though we add additional seasonings depending on how we plan to use the cheese. Step one is to bring the milk up to temp. The recipe will have more details, but the important thing is to stir it to keep the milk from burning and not to bring it all the way to a boil. We wait until there's a sort of bubble froth along the edge of the pot. Once it's hot, its time to mix in the vinegar. You want 1/2 cup of vinegar per gallon of milk. Stir it and you'll immediately see the milk separate into clumpy white curds, and the thin yellow whey. If it doesn't separate, hey just add more vinegar. Strain it through a siev or cheesecloth. You can speed things up by squeezing it a bit, but be careful since it'll be hot. Let it drain a bit and you've got farmer's cheese. You have tons of options from here. You can keep draining it in the fridge if you want it kinda crumbly, or you can run it through the food processor with a bunch of seasonings to make a nice smooth, spreadable dip. We have a cheap jalapeno cilantro mix we really like for making a dip for crackers. You can also use it as a filling for stuffed shells, or mix it into a white sauce for pasta. Alternatively, leave it unseasoned and use it to make syrniki, a kind of traditional Russian cheese pancake which is really good. (I've posted about this previously here: https://imgur.com/a/vqk4r4B and the recipe is here: https://www.alyonascooking.com/syrniki-recipe-cheese-pancakes/ ) Like I said, this is our biggest batch yet. Five and a half gallons of milk condensed down to one large bag of cheese. Our plan is to portion off enough for any meals that'll use it this week, and then to freeze the rest.
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