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Archived threads in /diy/ - Do It yourself - 73. page
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What is the best way to cut a hole into the BOTTOM of a bottle? Needs to be about 2-1/2 inches in diameter, just big enough to fit a light bulb

Do diamond hole drills that large exist? I can't seem to find one anywhere. And those compass glass cutters never seem to be small enough for the diameter I need.
14 replies and 2 images submitted. Click here to view.
You can get 2 1/2" diameter diamond bits on Amazon.
drill a hole in the very center, stick a toothpick in it, tie a string around it and attach the other end to a glass knife, score the glass in a circle. I don't know if this will knock out easily, but you can always get a very small diamond drill bit and cut small holes all the way around the circle, then try to pop it out. Then you can sand the edge smooth. Sounds like a lot of work though.
This is a great idea, thank you. And it took forever to find that 2-1/2 inch drill bit on amazon, but I did find it. I think I'll take the expensive and easy route instead of the cheap-but-hard route and buy the bit, lol

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Where can I buy a big bag of used padlocks to practice picking? Don't care about keys, just quantity, variety and low cost.
22 replies and 4 images submitted. Click here to view.
Thrift stores, Craigslist, garage sales.
Bike racks
Go find a nearby bridge, people love to lock bridges.

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Hey diy!

I would like to make myself a small lift to lift my computer tower from underneath the window to in a direct line out the window.

My plan is to just have the actuator mounted on top of a box that's on wheels that is just small enough to hold the tower underneath the desk when not in use. The actuator will be fixed to the top of the box and a plate on the other end for the tower to sit on.

Do I need something to stabilize the platform seeing as the only thing holding it will be the single actuator shaft?

Looking at designs for bigger...
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8 replies and 1 images submitted. Click here to view.
>Do I need something to stabilize the platform seeing as the only thing holding it will be the single actuator shaft?
From the ones I've handled, yes. You would need some kind of rack arrangement that would move up and down, and then the actuator just does the lifting.
>I am also having trouble finding how loud these things run, is the motor constantly running while under load or just while lifting?
loudness depends. The motors only run when they...
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These things are just a geared down DC motor that drives a worm drive that extends and retracts a rack unit.
They also have a limit or reed switch at each end of it's stroke to disconnect the supply to the motor.
Also bear in mind that you reverse the direction by the polarity of the DC voltage applied to the motor.

Hope this helps.
You're building a mechanism to eject your computer out of the window? Why? In case the fbi knock on your door while you're fapping?

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Hey guys I have a sickness and the only cure is more anvils ringing. Post pics of current projects you may be working on, favorite tools, techniques you just learned, inspire others to make something great. That being said, I'm currently a newbie and I'm thinking way ahead, I'm really not sure what anvil to get. Refflinghaus, peddinghaus-ridgid, Turkish/Czech anvils, cast steel Nimba, or the relatively new cast steel Blu anvils.
168 replies and 33 images submitted. Click here to view.
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Milling this old track tomorrow for a anvil. Will post pics if thread is still around. Also got some spikes to tinker with. Should I mill a hardy hole? What size are they?
I was thinking of buying this set. What would I still need to get in addition to this besides a hairdryer or something.
I don't know where you live but here on the old continent old Soviet states have good blacksmithing shit. There is still lots of stuff available as it wasn't that long ago they were used. Aren't as expensive. I bought an eastern block anvil for my friend who is a blacksmith. Was cheaper and as good as a lokomo....

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Hey have 66 lead acid batteries to play with, I'm thinking of making a shitty electric car. What would you do wit too many 12 volt battery.
24 replies and 6 images submitted. Click here to view.
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They were used as a backup power supply for a casino, maintained well enough. I
don't really know what I would do with so many
Bomb proof home backup system?
You probably use 5kw/day at most and assuming I lowball the batteries (50 usable batteries * 70 Ah * 12 V * .80 % efficency) you'd have around 35 kw of energy to use and I'm really lowballing this. You could use the rest to make a kickass car or a really strong welding setup. I'd talk to someone who does home backup/solar stuff.
I'd use it as part of an off the grid electrical system for my house (48v 1283.7aH in series-parallel ), until they died in around the 5 year old mark.

How old are they? They might be worth more just as scrap. If so you can make a DC stick welder out of them or a furnace. Make an electrical car or a few electrical gokarts. They'd be great for one of those solar-powered Elf vehicles/bicycle hybrid things. There's lots of plans online for similar vehicles.


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Everyone wants to go off the grid with solar panels and such. But how viable would it be to make your own little coal powered electrical plant in your back yard? Its a simple process, and I live in the middle of nowhere and have access to coal. Thoughts?
14 replies and 2 images submitted. Click here to view.
Boiler and turbine maintenance is not very DIY. There's too much knowledge and tooling to half ass it, and shit explodes big.

Maybe make a coal slurry and feed it to a diesel engine tuned for it.

How are you gonna source coal? Solar and wind are good for OTG because it's always shining down or blowing through.
High-pressure boilers of a size practical for your application are not Amateur Night projects; they're dangerous as fuck and could explode with the force a a thousand suns if not maintained and managed very carefully. Might also involve a permit/license.
Like another anon said it might not be cost effective or easy to source coal. Might be better with a sterling engine that will run off any kind of fuel. Bio, wood, coal, charcoal etc. Probably not very efficient though.

Could always pull out a diesel engine from a car or truck and repurpose it as a diesel generator.

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How would I go about making markings similar to the markings on this wooden ruler? Would I use a stencil and some spray paint? Maybe burn them in with a metal cast?

First time doing something like this. Any suggestions are appreciated.
2 replies and 1 images submitted. Click here to view.
soldering iron with a fine, worn out tip.

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Is there a better way to do this using multiple monitors and/or multiple consoles (N64) so we can play together on separate tvs?
18 replies and 2 images submitted. Click here to view.
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not without significant modifications, custom adaptor or a special tv
i bet there is some way to build a sort of periscope out of ply wood and mirrors

wouldnt be very comfortablethough
Can you explain? Is it possible to somehow link two displays together like a dual display monitor setup for PC, and offset the main signal enough to one side so that half is displayed on each? Then just lengthen the controller cables?

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hey /diy/ ive go some EPS foam (kinda like the stuff in the image) and have to make 4 miniture sculpture like peices/models that represent hierachy, chess pieces ar out of he quesion, I was temted to do differnt stormtrooper helmets,but they would be hard to carve with only a file and sme sandpaper, pls help guys??
3 replies and 1 images submitted. Click here to view.
pick up a hot wire foam cutter to get a rough shape of what you want to make and then go from there. You can get one for about $12 USD that takes 2 D batteries, but it is limited on how deep you can cut and how big of the piece of foam you can cut. I use one for when I cut stuff out of 1" to 3" pink insulation foam for molds when i cast stuff out of aluminum.
Make hearts, diamonds, spades, and clubs. It's up to you to come up with some convincing hierarchial rationale.

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How can I get my computer to play though the speakers of my tv?

I have it hooked up with a VGA right now, or can I only use computer speakers? Is there a way to hook it up to a surround sound system?
16 replies and 3 images submitted. Click here to view.
The tv
The aux cord on the vga didn't work
you could use an aux cord

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so I've decided my next project is going to be building a basic 4 piece drum set (2 tom toms, a snare and bass drum)

I'm hoping to use pre made shells, as i havent got the tools or space for those tools to make them myself. Im struggling to find a place to source the materials i need. does anybody know where I can source drum shells, lugs and hardware of custom size in the UK?

also anybody who has built their own instrument would be great to hear about it, any advice on my project would be appreciated
5 replies and 2 images submitted. Click here to view.
Why does the hardware need to be custom? Why not use "replacement" hardware? It seems asinine to get a 14 inch rim custom made for a pre made 14 inch shell. Same thing with the lugs and tuning screws. It's just going to be a lot of extra money to get this stuff machined when parts that do the same thing will do the same thing.

You're probably not going to find this stuff locally, an if you do it'll cost more than what you can find online.
music shop
Since you are buying the shells, you can... oh, you are buying the lugs.... oh, you are buying the hardware. I guess you will diy the skins? If you are buying the skins too, you may as well just buy a used drum set on ebay that has the kind of shells you want, and do some finessing/finishing to make them sound and look great to you..

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afternoon folks! I've been doing a lot of projects that require the use of a respirator and have decided to invest in a reusable one (where you replace the filters) as opposed to the inexpensive one time use masks. I've been trying to do some research but I'm still not sure I'm making a good decision. Rather than try to talk to the folks at the home goods stores, I figured I'd come here first for recommendations on both what kind of respirator would be good for me as well as a good market to purchase it from.

From what I've read, all manufacturers...
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56 replies and 8 images submitted. Click here to view.
every box of filters i ever bought had a table on the back showing the protection levels required for pretty much any activity
the finer the filter the more it will protect you, but if you buy a really fine particulate filter and then use it for something that doesn't produce really fine particles it will just clog up really quickly and you will have wasted money on a filter you didn't need.
so sometimes its better to buy a couple to cover the different jobs you need to do.

closest store to me only does one kind of filter anyway and its cheap so i just use whatever, as long as i can't smell anything and my boogers are green instead if black at the end of the day i'm happy.
Prolly you have somekind of specs in your country. Just read the labels and you'll find the correct level of filtration. And if you buy a cheap one it might not be that comfy. We have a chain called biltema and though it has the same specs as my M3 the M3 kicks ass as it is so much nicer to use for longer periods. Costs 5 times more though.
one of my peers whom I was speaking with on the subject said that his beard factored into the effectiveness of the mask too. Is there a way around that, short of shaving? In the type in the OP pic, it seems that any longer facial hair would allow particles into the mask.

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166 replies and 13 images submitted. Click here to view.
Americans are afraid of change.
It's not even the fear of change, it's the radical independence.

"We're not going to change just because every other country on the planet uses the metric system."

Kind of similar in England with their holding on to Imperial units despite not being their official measurement system.
Most Americans dont care about metric because imperial works for us. The if it aint broke approach.

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Has anyone ever had to do something like this?

I'm moving to a new apartment, and in my new building, each apartment has its own corresponding "basement" which is basically a single room w/ door found in the underground hallway, accessible by the stairwell. Most people use these for storage but I've noticed mine is fully equipped with electrical outlets and heaters. It's big enough to set up some sort of office or vidya center (inb4 cuckshed) but I'm not sure how I'll get my wifi down there.

I've seen these wifi repeaters...
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What are you casul?
Just like property management won't let me set up a repeater in the common areas, they certainly won't let me run cable from my front door, down the stairwell, through the basement hallway and into my basement unit.
dude, just run a cable down there through some shaft, along water pipes or something like that.

even if somebody found out, and it would have been against the houserules, its not like theyd kick you out...

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I have a side by side fridge in garage that's acting up. The refrigerator side isn't working right... it's drifted up to 60F in the compartment. The freezer side is fine.

I've dialed up the cooling setting on the fridge side and gotten that side down to 40F (was set at 4/7, now 7/7).

Something's obviously wrong with it, but I don't know enough about how these units work. The cooling / compressor's functional, or it wouldn't cool at all. Thoughts on what I should look at appreciated.
28 replies and 4 images submitted. Click here to view.
Thermostat's busted on the refrigerator side
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Beat me to it. Pic unrelated
Keeping house refrigerators in the garage will ruin them if you live somewhere where it gets cold because it messes with the thermostat

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