DIY

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hi all! I am tetraplegic and drive my wheelchair with my chin. the medical grade facemasks I've tried over the last few years make it impossible to do this while wearing them properly. I have 2 cloth masks that can be worn while driving, but I know they don't offer much protection, so I'm here to ask

  1. if detachable air filters even exist?
  2. whether they can be installed in a cloth mask
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Hello Lemmy,

Youve been so helpful over the last few months. Maybe someone can help me with this.

I have this butchers block countertop with an undermount sink. I had it installed 18 months ago. I sealed it, and then this part was being warped and forced apart. I put in wood block, I resealed it. But as you can see, its coming apart again.

I followed all the advice of the handy men I know, including the one that installed it. The only thing I can think of is, aside from reblocking and sealing it, maybe a line of silicon around where the faucet comes up, and around the lip where the sink is flush with hole its mounted in, both things they assured me wouldn't be necessary. Should I be concerned about a leak on the underside? Am I just hosed?

(More pics of the whole set up on request)

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Hey all!

I'm at the process of building an enclosure for my 3D printer. Its purpose is to keep the heat inside, while dampening the sound from the printer.

I already have the base to absorb any vibrations, but I need side panels too for said heat and noise insulation.

For that purpose, there are only two options, but both acoustic panels or insulation foam are either not flame retardant, expensive or both.

I thought about that problem a while, and came to the idea, that I could go the DIY route and make either mycelium based plates, or plant fiber (like hemp) turned into concrete, aka. hempcrete.

Luckily, I'm both a mushroom and weed enthusiast with quite a lot of solarpunk spirit, and have everything I need for both. But I just don't know where to start.

Here's how I would do it:

Mushroom bricks

  • I'd probably take Reishi as culture, because from my experience, it was the most robust mycelium. Oysters weren't as firm, but grew way faster and with less contamination.
  • Make grain spawn as starter culture
  • Mix it with plant materials, like hemp fiber, straw, or saw dust
  • Fill egg cartons or something similar (uneven surface for better sound crushing properties) with the inocculated substrate
  • And let them incubate for two weeks
  • When finished, take out of the mould and put it into the oven for drying
  • Finished

Hempcrete

  • I would probably start with animal litter substrate, basically small chopped hemp fibers
  • Mix it with calcium hydroxide (hydrated lime)
  • Add some cement
  • Pour into mould
  • Cure for a week
  • Finish?

How feasible is all of that? While I'm all into that for research purposes, I also want something that just works.

How experimental is it? Are there already any well documented procedures for both?

How's the long term stability, e.g. degradation, mold risk, smell, dimensional stability, etc.? Especially regarding the mushrooms, how can I prevent them from turning either moldy or brown when drying?

What alternative materials are also well suited for that purpose?

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cross-posted from: https://slrpnk.net/post/17687690

where could someone find a pair of sturdy, comfortable goggles that an optometrist can put a prescription into?

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cross-posted from: https://slrpnk.net/post/16912428

Up until a few days ago, I've had a Google Pixel 5.

I used it for about 3-4 years, but I had to replace it due to its' hardware failing and it hitting EOL software support wise. Especially the USB-C port is damaged, and the battery is drained in just one blink of an eye.

Said device is now lying around in the drawer, and I want to find a good use out of it. It's still a fine phone. Like all those phones other people have in their drawer. It's probably faster than my homeserver, has cameras, sensors, wireless connections, and much more.

It has GrapheneOS installed, and is still more or less secure, probably even more than 80% of other android phones right now I guess?

**Do you have any ideas for what I can repurpose it? **


I know that there's Octo4a, which can turn it into an Octoprint server for my 3D-printer, but I already have a Raspberry Pi for that, and as said, the phone has an unstable USB connection.

Maybe I could use it for my photography equipment, e.g. as remote shutter?

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Homebrew battery (www.hanssummers.com)
submitted 1 month ago by [email protected] to c/[email protected]
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cross-posted from: https://slrpnk.net/post/16376900

The W and R keys don't work on my ASUS vivobook flip 14 and I would like to fix them so I can give the laptop to a friend. The reason they stopped working is because I spilled water on them a long time ago. Other than that, the laptop works perfectly fine.

I saw some teardown videos for an entire keyboard replacement for it, but it looks wayyyyyy too complicated and easy to mess up. I have expierence replacing stuff like batteries and SSDs in computers.

Is there a way to replace/fix those two keys without taking out the entire motherboard?

8
 
 

Direct link to the PDF guide on how to build the heater here: https://drive.google.com/file/d/1N-q3Zu6jngpSJdXUoSkWl4YKb26RCvAV/view

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A super cool collection of projects ranging from how to make an effective fluoride varnish for dental protection, abortion medication, and more!

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hell yeah

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I've got an appx 12' x 24' space between my single story house and tall metal barn garage. The roof of the house slopes toward the space.

I want to convert it into a greenhouse so I can grow veggies without having to chase off critters. Ideally I should be able to install gutters that drain to a rain barrel.

I'm hoping some of you fine folks have resources and recommendations for this kind of project.

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submitted 2 months ago* (last edited 2 months ago) by [email protected] to c/[email protected]
 
 

This is really good!

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Direct Link to the website and book download.

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A few years ago I came across ultra-insulated high efficiency fridges, like this now discontinued SunFrost design.

Extra thick insulated walls are only part of the reason those are so efficient, but I figured, is it possible to at least get kinda close by adding extra insulation to the outside of a normal fridge? For many fridges, the answer is yes!

This old post from a 2012 eco-modding forum claims that, using just regular old styrofoam, they were able to cut down the energy use of their old energy-hog fridge from 274kWh per year down to 128kWh per year! (And they wrote a little guide on how they did it too).

Those sorta numbers kinda blew my mind. Not only is it possible to save more than half in yearly electricity costs, it also keeps an old fridge out of the landfill instead of being replaced with a modern, more efficient one. And bear in mind, that's just with styrofoam, which according to this handy little chart, has an R-Value of 4 per inch (High density EPS, i.e, Expanded Polystyrene, is what is usually referred to when we say styrofoam). Imagine what sort've numbers they could've got with proper insulating foam with an R-value of 10 or 13 per inch!

I was able to find another post on this topic over on reddit, which brings up the biggest downside of doing this modification: It's ugly.

I think that could be negated somewhat if you're creative and painted the foam (it'd probably look cool if you painted it white or black and sprayed a solarpunk logo with a stencil on it), but I suspect for most, this will be a dealbreaker for a main kitchen fridge (not to mention, you may not have enough clearance for the extra foam in your... Fridge slot?)

Still though, those power saving numbers are difficult to ignore, and I could see people going for this on secondary a garage fridge, like the dude in the second link did. It would have a dramatic effect in energy consumption if the ambient temperature around your fridge is usually pretty hot, as hotter outside temps dramatically increase energy useage.

Now you can't do this to any 'ol fridge or freezer. Some designs dissipate their heat through the metal skin of the fridge itself, and covering it with foam would quickly destroy it. But if your fridge has a visible condenser coil somewhere, either on the back of the fridge, or underneath, you're probably good to go as long as those coils remain uncovered and can get adequate airflow per their design specs.

I think this modification is probably best suited for older, less efficient fridges, where it'll give the most noticeable benefit in energy and cost savings. But if you did apply it to a modern high efficiency fridge, you could probably get near the efficiency of a factory-made ultra-insulated fridge (which currently go for a whopping $2,150!) for a fraction of the price.

EDIT: Found some more numbers in this video. Using 3/4" foam (less R-value), the guy in the vid achieved a 20% reduction in energy use. In comments, another person reported a 45% reduction in energy use after applying 1" foam.

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submitted 4 months ago* (last edited 3 months ago) by [email protected] to c/[email protected]
 
 

So I'm going to an evening event which requires clear concert bags if you wanted to bring one. The max size is 12"x12"x6".

If I was going clear I at least wanted RGB, so I looked it up and it was $75CAD... Ouch, bags are like $20CAD.

So I thought about it and I wondered if I could make one.

So I got this bag and a 16.5ft string of fairy lights. I busted out the misses sewing needles and stitched in the wires to the fabric seme and this was the result.

I am extremely pleased with it. Next time I think I'd move the battery pack to the edge where the zipper starts or ends. Otherwise would recommend.

Bag was $19CAD and the LED's were $13CAD

After Event Edit:

So we came, we saw, we kicked it's ass... OK I did no such thing but adding LEDs certainly was a benefit. I made 2 of these bags, and honestly having big glowing somethings on your friends makes them insanely easy to find in a crowd. Especially for a night event which I went too.

The LEDs were even helpful when I was looking for a specific color of candy in the bag, or illuminating people for pictures.

My stitching was good and the wiring didn't get loose, but the same cannot be said for them bags themselves. As one of the straps on the bottom which holds a loop deteriorated and almost came off. I expected this, but it does sting non the less.

Going forward I am making these bags for everyone I'm going with. They are just so helpful.

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I'm a mechanical engineering student with a fairly open brief for a short project. Have to draw a 3D cad model of a mechanism and do some motion analysis. So i thought i'd ask the fine folk of slrpnk if they had any projects that need a bit of ironing out.

Probably best suited if you have an idea and want see how the parts might move in 3 dimensions. I'd be able to tell you stuff like how much force/torque is in a particular part, letting you know how strong bits need to be.

Has to be a mechanism of some sort that i draw from scratch - let me know what dimensions i need to accomodate. And i have to present it to the class.

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Experimenting with making cat litter out of biodegradable newspaper. It was pretty easy. Found a large strainer out on trash day.

  1. Cut or shred recycled newspaper into ribbons.(above)

  1. Soak in water with a little biodegradable soap

  1. Strain and soak in plain water.

  1. Sprinkle with baking soda and squeeze out water.

Let air dry for several days. I'll report back on how it worked. :-D

Eventually, I'd like to compost with mycoremediation for non-crop plants.

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hello Lemmy,

Every little while I update you on my basement build as I encounter problems. I am pleased to tell you the city is out of our hair. We have gotten everything up to code.

So here is where things get weird. My roommate and I live down here in the basement. Our rooms don't have drywall or tile ceilings. Currently, our funds are exhausted, and I am not looking to pick a fight with the city over permitting with the ceilings. That's a someday kind of thing.

We would like a small modicum of noise privacy from each other though. Right now the walls go up to the top plate, and end at the joists. The joists are open, as illustrated.

I am thinking I put something in the joists. My thought was just to grab some faced fiber glass insulation, staple it in there, and cover up the other side with a piece cut out from a blanket. I was also thinking maybe some XPS, which would be easier to cut to size and shape around infrastructure. I'm worried about foam board's flammability. I was also checking around my options with various blanket types, finding wool to be a good option, and a welding blanket to be an option as well.

Am I insane? Are the words coming out of my mouth still making sense? Does anyone have any idea what I'm talking about? or any suggestions? Help would be appreciated.

24
 
 

This is basically my most traditional bookbinding project. I used regular fabric cloth for the cover, and followed the traditional steps. The interesting (to me) change is the use of a CO2 laser cutter to mark the fabric. Here's the steps to making it:

I think it's fair to say that this book is extremely rare. The author has told me that the one physical copy I've made is the only one in the world, aside from an 'ugly stapled proof [he has] in a drawer somewhere.' The book was released on patreon as serialized fiction, with each of the six sections being made available as early drafts to a certain tier. The plan was that he'd put them up briefly, take them down again, then compile the drafts and eventually release a full published version. For life-happened reasons, the last step never got done (though the author was kind enough to repost the six sections on a discord channel when I asked).

Just the same, it was one of my all-time favorite stories, so if it wasn't likely to end up somewhere I could buy it, I was at least going to make a copy of my own.

So I took the six pdfs and started editing them using whichever online tools seemed like they'd do the best job. I started by cropping the files so they'd fit the correct aspect ratio for 8.5x11" letter paper folded in half, but started getting fancier as I went. I removed pages of bonus content from the back of each one so it'd flow better as a book. I merged them all together into one file (to reduce the number of mid-book blank pages from turning it into folio signatures). I even added a second set of page numbers to the bottom because the ones in the top right restarted in every section. I manually added some blank pages front and back.

By the time I was done, I had something to feed into https://momijizukamori.github.io/bookbinder-js/

I used that to create letter page folio signatures (with sets of 4 and 3 pages per signature). Now I had something I could actually print. We did so on a regular office photocoppier, and I can't recommend printing each signature separately and organizing them with paperclips enough. I would have lost my mind trying to sort them otherwise).

We start off the actual bookbinding in a pretty familiar way, taking each signature, folding each page of it in half with the bone folder, nesting them, and adding that signature to the stack.

Then I used my template from the previous bookbinding project to punch holes through each signature. One really nice thing about not having to trim whitespace from my pages is that the overall page size (and thus most dimensions of the cover except the spine) will remain the same no matter what is printed on the page or which printer I use. So I can reuse things like this template.

Here's my template with its measurements in case you want to reference it:

Eventually this left a nice stack of signatures ready to sew together:

As before, I sewed it together using waxed thread, following the Penrose Press Pretty Perfect Paperback Guide. I know there are a bunch of ways to do this, but I quite like this technique.

The next step is to clamp and glue the bookblock together. My clamp is pretty crude, it's just a 2x4' screwed to a piece of particleboard, with a couple ragged sheets of wax paper keeping the book from gluing to the clamp.

The goal is to get it as tightly pressed as possible while keeping the book block nice and square.

I didn't take a picture of this step for this project, so here's one from the last book. Note how the signatures are jumbled along the edge. I've gotten much better about lining them up recently.

I usually use my finger to work the glue into the gaps these days, it's faster and makes less mess than the brush. I think it gets into the gaps better too. I do three coats of glue on the spine. For hardcovers like this one, I then glue on a strip of mull or cheesecloth which is a couple inches wider than the spine on either side (front to back), and like an inch or so shorter than the top of the spine (heightwise).

Then I glue on a strip of watercolor paper (it's supposed to be manila paper but I don't have that).

Now it's time to start on the actual cover. I size the bookboard so it'll overlap the book block by 3mm on the top, bottom, and open edge. You're supposed to make it 3mm wider for that overhang, but then remove 6mm for the hinge by the spine (so that's actually -3mm) but I haven't had good luck with that, the open edge always seemed too close to the book block, so I just leave it the same width as the book block and slide it out 6mm. Somehow that works.

To get the spine width, you're supposed to measure the spine of the book plus one thickness of bookboard, but my spines often come out a bit thicker than the rest of the book so I'm sure about that guidance either.

That's the basic layout but I wanted the color to be darker. I was reusing fabric I bought for a halloween costume, but I was picturing more of a maroon color. I didn't want to buy new cloth when I had a bunch on hand I wasn't using, so I decided to dye this piece.

I started off trying to use some very old, expired, dark roast, decaf coffee, but the cloth just wouldn't take the stain, likely due to not being natural fibers. So instead I switched to using some old rit dye I had. I took lots of pictures for the coffee and almost none for the rit dye, so just pretend it's slightly blacker and in a different pot. And that I'm using a stick instead of a wooden spoon.

The nice thing is the rit dye isn't really going to go bad, so I just poured it from the old pot I used (we stopped cooking with it because the nonstick lining had started to flake) into an old jug. I've actually reused it since and it worked fine!

After a lot of hassle, the rit dye finally made the difference.

I ironed the cloth to smooth it out:

And glued the bookboard down onto it. Make sure the gaps between the spine and the front and back is 6mm and that they're square/in line with one another.

The next step is to trim 45s off the corners (leave one bookboard's thickness between the corner of the bookboard and the cut edge) and to clean up the edges.

Then I applied glue to the bookcloth and bookboard and wrapped each edge over:

My attempts at this look kinda crude, but you don't really see this once the endpapers are glued on, so it doesn't bother me yet. Someday I'll probably look back on it and wonder why I thought this was good enough, but for now, it works just fine.

(You might notice that I glued the cut-off triangles to a scrap of bookboard, that'll come into play later)

When you apply glue to the endpapers they'll kind of liquify a little and stretch, so trim a couple mm off the leading/open edge. It'll look better.

Okay, final assembly. This is where it all comes together or goes horribly wrong.

To do this you place the bookblock inside the cover and get it positioned how you want it. Open up the cover again, slide a piece of wax paper and a piece of scrap paper in between the topmost endpaper and whatever's underneath it. Make sure the scrap paper is on top.

Get your brush soaked with glue and then dab it on some scrap until its not really soaking where it hits. Use little vertical jabbing motions (Psycho style) to stipple the top paper so its completely glued. Apply glue under the mull/cheesecloth, then put the cloth in place, then apply glue on top of that.

When there's a good layer of glue everywhere take a deep breath and close the cover onto the page. Open it just a crack, look for wrinkles and smooth them out as best you can. If you open it too far the paper will pull away from the cover.

When you think you've got it as good as it's going to get, remove the scrap paper but leave the wax paper. Close the book, put something heavy on it, and hope for the best.

When its dry, flip it over and repeat the whole process.

We've now hit all the usual steps (except the end ribbon thing but I don't see the point of that). I was honestly very pleased with the results.

But lets get fancy with it. I had some time on the CO2 laser cutter at my local makerspace, and I'd seen online that people had managed to etch bookcloth, so I wanted to try finishing things that way.

We started with some tests, on very low power and working our way up. We weren't sure how well the poly-blend fabric would handle the laser, or what kind of damage it would cause.

We started with the settings for printer paper (95 speed, 10% power) and worked up by 5% increments, finding that the quality improved each time.

Once that was done, I banged out a quick cover layout by measuring the book, drawing a vector rectangle in those dimensions, and positioning the raster title in the middle.

We ran it with the lid open (runs as a test with just a visible dot) and made sure the rectangle followed the edges of the book.

I had to prop the cover open a little so it'd be more level (I used one of the little connector things we use to pin warped things to the work surface). Then it was just a matter of hoping for the best and rerunning the file with the lid closed.

It was kinda high stakes but I'm very pleased with how it tuned out.

#diy #bookbinding #lasercutter #etching

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Hi,

I have an old xiaomi 20 000mAh battery bank with two non working USB ports.

I've bought another one to replace it, but I'm wondering if there is a way to fix the ports.

The problem is that the case seems mostly sealed, and I see no way of opening it.

If you have some tips on how to approach this I would appreciate it ❤️

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