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/diy/ board - Do-It-Yourself - November 2014

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Most viewed threads in this category

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Hey /diy/, About 10 years ago my then weaboo self bought this wakizashi, it's still really fucking sharp, but as you can see in the pictures I didn't exactly take care of my stuff back then. What is the recommended procedure to get this back as clean as possible? I have basic polishing experience and tools. Thanks in advance!


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> Lay on the bed > See this wat do?
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What makes tags disintegrate like this? Is it too hot during washing? Left in the dryer too long? I must be fucking something up dying laundry
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When dealing with lithium ion batteries, what is the acronym "lt". I understand it's the characteristic current that discharges the battery in 1 hour, ie 1.0 lt mA discharges in 1.0 lt mAh. When I search google it says lt stands for lithium ion technology, not helpful. pic related, 2950 mA gives a discharge capacity of 2950 mA = 1.0lt
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Anybody have experience using this or other brands of latex foam? I want to seal some ~1 inch gaps, but I don't want to use caulk or Great Stuff foam to permanently seal them. I've heard cured latex foam described as having the consistency of a cupcake, which would be perfect for my needs.

heart warming /diy/ stories

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So I just fixed my neighbors fence. >the dog kept escaping over the past few days >kept returning it >some woman came over to bitch about the dog barking telling us all about her goodie two shoes complaint to the council and trying to get us on her side to lodge a complaint as well >dog escapes again >bring dog back >while I'm there I offer to check the fence >elderly woman >explains her husband has been in hospital for the past few days so noone to fix it >picket hanging off fence >remove brad nail >straighten out >hammer picket back in >fix'd why do people need to be such shitty people? when did calling the cops become the first knee jerk reaction instead of building community?
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I want to do reverse-electrolysis. I know the steps already, what I dont know is where to get Sulfuric Acid.

unusual fixings making a metal through hole in wood.

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I am looking for something like a rivnut but unthreaded. or a hollow rivet or an eyelet for wood. I am building a battery box that needs to fit around my bike out of fibreglass and plywood. I need to assemble it in three pieces so that it will snugly clamp onto the frame and not be easily stolen but still removal for maintenence. I want to install eyelets in plywood for passing bolts through where they will meet up with rivnuts or t-nuts. the reason is to distribute the force of sudden jolts across the ring rather than on a focal point like an unshielded bolt hole in wood would do.
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anyone have plans to make a backyard nuclear reactor?
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So, a few months ago, I mentioned how I was going to redo my basement flooring in foam play tile. I used it because my area seems to be having a flooding streak (2yrs in a row, may continue), there is a suspicious crack in my basement wall AND/OR my weeping tile might be old and defective now. Basement is finally done, here is the lessons learned: 1) Was able to trim it with scissors, which was infinitely more convenient than the vinyl click floor I just put in my upstairs. 2) Insulates pretty good. The concrete floor is cold as balls, the foam is warmer (and softer) than, again, the click tile upstairs. 3) The foam does indent from pretty much anything, but the indents don't seem to last longer than 24hours. Unsure about extended pressure (like what the tile underneath the bookcases will have for recovery time, or if they'll be flat forever) 4) I should have coordinated the colour better. I asked the wife if we should do a pattern or coloured sections, but we decided the only rule was the same colour tile cannot be side by side. 5) Fits together mostly well, there are a few areas where they don't click together perfectly and there is a bit of a gap. 6) You can feel the slightest bumps through the tiles. If it floods again in spring, I can comment on how well it cleans and replaces. Also, I don't know if I didn't put under flooring between the concrete and the foam, I am not sure if I should have.
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Does anyone here have any experience with drones? I want to get into aerial pornography

How to hook up 9mm headphone jack to a speaker

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Hey /diy/, I want to know how to hook a 9mm headphone jack to a regular positive/negative 5 watt speaker. I had an old double ended headphone jack just laying around, so i just cut it in half and split the wires. Anyhow, i plane on making a portable speaker. Webcam took a blurry picture so I just made one quickly on paint. Thanks in advanced.
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How the fuck do you remove this bastard without breaking it???
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Show me your best Altoids can survival kit
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I live in a house that is essentially a giant heatsink. It was built in the 1920s, has absolutely no insulation whatsoever, there's no foundation (it's just sitting on hundreds of wooden posts), wood floors everywhere, and nothing is properly sealed. Oh, and there's no fireplace or anything, of course. Oh, and it's in the middle of a huge flat plain with almost no shielding from cold winds. So whenever it's below freezing, the central heat runs virtually nonstop just to keep it in the mid 60s, resulting in electric bills that are around or above ~$800 from November to March. Now, because I would also like to be able to eat this winter, is there any possible way to reduce heat loss from this retarded house, aside from just not running it and hoping I don't freeze to death?

Beginner woodcarving general

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This might get posted a lot, if so, I apologize. Nevertheless, I want to get into wood carving, particularly small-ish things. Whats the best way to get into this? Where do I get wood to carve? whats the best kind of wood to carve? Whats the best tools for small detail and shaping carving? Thanks in advance
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Is it possible to make a soho router based on a programmable microcontroller? I need a final project for my EE bsc and i work in the area of networks. Would like to create/write as much as i could for it
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Painting help Ive repained several guitars before; each one was a total experiment. The spray painting went fine; thin layers that are well cured.. but its the clear coat that trips me up. Now i got 2 more just waiting to be clear coated and i need to do this right. What ive used before >Spray clear Wipes right off. Not a durable shell at all... its like dust. >Brush on waterbased polycrylic 3 guitars were done this way years ago. One feels hard-ish.. Finger nail cant scratch it but on a corner that presses up against me, it wore away and exposed the paint which also rubbed off another done this way feels hard at first but if you press your fingernail into it, you can tell its gummy a bit.. It also stuck to some of the hardware and once when i took that off, it began to peel like latex. So, whats the best thing to use? It needs to be hard shell and really durable for constant rubbing on clothing; just like the factory clears that they come with. Im too afraid of something like Pour-On cuz its too viscous and i heard some are dark yellow in tint.

Help me to design a high current PSU.

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I found this huge transformer inside a big audio amplifier and I wanted to make a high current PSU with it, it has a 2 amp fuse at the primary, so I guess the max power is 460 watts, what translates into 15 amps at 30 volts or 7.5 at 60, I don't know it this transformer should be able to handle more power. The main outputs are those three cables at the top, from red to black and from orange to black I can get 30 volts, and from red to orange I can get 60. Can I just wire the rectifier circuit to the red and orange cables without using the black one to have a rectified signal of ~60 volts? I'm thinking about adding a switch to be able to change from 60 to 30 volts at the input to get some more amps if I'm using voltages below 30 volts. Another problem I have is the capacitor value, I guess It needs to be huge, but I don't really know many capacitors I need to have a steady voltage signal with high currents. The last thing I need to solve is the regulator, I've seen many schematics using an LM317 and a bunch of transistors and I wonder which would work best. Also I wanted to know if the IN/OUT voltage difference, which is 40v in normal cases for the LM317, still applies when using transistors, if yes, I guess I'll have to use 30 volts as the input.
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allright DIY... my cat is an asshole. He likes to knock his water dish over... he's got toys.. we keep it clean.. it's not near the litter box... so I've finally given up on trying to find the cause for his behavior and have decided to cat proof the water dish... I want to use the water dish I have because it works great. and I want it to still be easy to pick up and fill/clean... below is my idea and efforts... would appreciate any input or ideas on how to improve it. also getting rid of the cat isn't an option, other than this he's a pretty great cat.
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