Archived threads in /diy/ - Do It yourself - 108. page

These don't work. The video is a fake. It's not really got anything to do with Nic Tesla. People shouldn't be able to spend three years at university without knowing this.

>>1196423
i understand your point of view, i'd say for my defense that i was into litterature,
that was basically an idea, i wanted to have your opinions before investing myself

They let anyone into college nowadays don't they?

>Feel free to point out my autism and cause me to have a panic attack because of something someone said online

without that sperg attack the backlash would be nowhere near as bad as you assume it will be kek

>>1196385
You cannot do anything with heat energy (or any type of energy for that matter) unless its "useful energy" I.E. energy with a nearby area of lower energy density. Energy cannot be created of destroyed but the flow of energy can be harvested to do work. If you had a very cold box you could use something like a sterling engine to extract energy from the abient temperature. However, this causes the box to warm up over time and gradually decreases the efficiency of your sterling engine until the internal and external temperatures are in equilibrium. Then the sterling engine stops. The problem is: due to efficiency, and entropy, it will always require more energy to cool the box than you could ever hope to extract from it.

>>1196392
tl;dr:
No, its not possible OP.

Running 12v lines to solar panels isn't much of a problem.

In the back of the car, behind the bumper there are vents so you don't blow the windows out when you shut your car door. Similarly, at the firewall there are grommets you can remove with enough access.

However, you shouldn't run a peltier plate in your car; it'll drain your battery, and run the risk of starting a car fire.

Thank you that was helpful. I'm running it strictly off solar. The hotter the day the harder it cools

>>1196149

Please, send help

>>1196149
What's this for? Can you not just make it in real life without dicking around in software?

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>>1196151

Actually the project is for a mechanism to take the temperature from a crucible, the thing is I have to show the dynamic or movement of this stupid project before the assembly and then start with the production in real life, but some pieces are not fitting like this kind of screw

>>1196106
She should try nopoo

You need to sand it.

Clean well with alcohol first, then sand with 600 or 800 grit depending on how worried you are about sanding through the paint. Clean with wax and grease remover, follow with a tac rag. Use about 5-6 applications of paint, aim for about 80% coverage on your first coat, allow about 10 minutes flash off time between coats.

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>>1195485
I recommend you don't use biscuits. That is one step above pocket screws. It is the kind of joint you find on shit furniture that uses cheap wood and veneers.

Use real joints to join your wood. Or at the very least learn how to make dowel joints. They can be done with a standard drill and, if you are clumsy and need it, a simple jig you can make yourself.

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>>1195494
Spline joints are also acceptable.

>>1195485
>What does /diy/ recommend?
I, for one, recommend not using biscuit joints

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>>1194922

I don't have a true before picture, but I have one from just after ripping up the ugly 80's brown carpet, demolishing 80's cabinets and scraping off the horrible popcorn ceiling... I also removed a wall that was put up to divide the kitchen and living room. In the last few weeks, everything on the first floor has been gutted to subfloor and drywall, new paint, new doors, painted all of the ugly brown wood trim white, and installed new cabinets, working on counter tops, and got flooring installed. Trying to do this on a budget, and so far I'm under $2500 for everything. Only lack crown molding, finishing baseboards, and tiling the kitchen and installing new toilet and sink, and finishing shower tile. Coming together.

Almost a before picture...

>>1194922
Oh, also putting a nice counter height bar between the center column and the left wall, under the light fixture. Should seat 4 nicely, 6 in a pinch.

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Trying to copy pic related, currently putting the cabinets in.
Has question, should a spot for the microwave go above the fridge or below the counter?

>>1193903
I assume you'd ideally want a parabolic lens instead of a spherical one? One way to get that would be to spin the molten plastic; the centripetal force will pull more material to the perimeter and make a parabola, just like with early spinning-mercury telescopes.

I think you'll have to heat (and cool) the plastic uniformly, otherwise you'll get stress gradients within it. The surface made by a ball-bearing simply being pressed into place might not be perfect enough, and you'll probably have to polish it regardless, so maybe try bolting a rod onto a ball-bearing and putting it in a drill so you can rotate it within the lens' hollow with polish on it. Might I ask what you're using to produce and detect these ultrasonic waves/phonons?

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>>1193912
Spherical will do for now.
An even earlier prototype has a surface milled with a round bit and has been somewhat pollished. Still with noticable scores and works ok so far. So I think the bearing surface will be good enough.
I don't know about stress gradients, guess thats up to test.
>Might I ask what you're using to produce and detect these ultrasonic waves/phonons?
A custom transceiver hooked up to a piezo element that gets glued to the flat side of the lens. Here's a image of the Signal I get out of it so far.

>>1193912
>the centripetal force will pull more material to the perimeter
Not really, but I know what you mean.

>>1193658
check out google.com, it has a lot of recipes

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>>1193661
listen here New Fag, his fucker came to us for help

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>>1193661
He didnt go to fucking GOOGLE, he came to us.

impact screwdriver

>>1193604
Couldn't find it my browser might be hacked.

Hammer
Screwdriver
Put screwdriver into the screw... twist it to the left and tap the handle of the screwdriver with the hammer...

I did this on an old Ford Fiesta for shits and giggles but I never actually got the engine running well again so probably not the best authority on this subject. But it's not technically difficult, just time-consuming. All you have to do is keep track of the parts you pull and their specific condition.

As far as fixes, that depends on your budget. Simply rebuilding the engine if you take your time will add a lot of life to the vehicle. But you're also liable to get into a situation where you're spending a lot of money on replacement parts once you see the condition of some engine components.

>>1191387
>is it near impossible to do on my own?
no. get a haynes manual and follow the instructions to the letter. don't get a car from a dealership. get a 500$ beater off craigslist.

>>1191387
>is it near impossible to do on my own?

Depends on what you mean by "engine overhaul". Also how expensive is highly dependent on if the engine actually needs rebuilt, and what is wrong if it does.
In most cases where you would normally say "engine needs rebuilt" you would have to have a machine shop do precision work on it.

If you are just talking about buying a running car and doing maintenance to it by bolting new parts on, thats normal and everyone can do it.

There is a very fine line of diminishing returns when talking about a cheap or old car though.
You can dump thousands into the car, and its still an old beat up car, or it could get totalled, or you could have a catastrophic failure somewhere else on the car.

Also 100000 km isnt really high mileage, 350km is closer to high mileage.

Get a car thats checked out by someone else who says its healthy enough and then just do basic maintenance and youll be fine.

Borscht.

>>1186870
This thread will turn out really well

>milwaukee>makita>bosch>dewalt

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>>1186870
As far as power tools go there isn't a huge difference anymore. I went with Milwaukee for my cordless tools. They seem to have a slight advantage when it comes to batteries, offer a wide range of tools and usually have a nice gimmick or two. They even make some good hand tools. Their tape measures with the neodymium magnetized end hook is great for metal work.

Maybe you should stick to kitchen renovation, car repair and shit posting about makita. This shit is beyond my level of brain cells.

I'm just hoping this isn't some bait and you're not just making everyone loose his time.
Yes , co2 lasers have a 9-11 um wavelength.
At those wavelengths , anything will protect your eyes. Literally everything but very specific material block lwir so unless you find someone making prescription glasses out of germanium , just putting on your typical 1 dollar googles will work.
Now, there's 100% chance you're not getting a co2 laser and it's just going to be your typical diode blue laser.
Which means several things :
1. You're an idiot for thinking co2 lasers come in that size factor anyway.
2. It'll work for fabric so that's good
3. You want some specific goggles that protect for that wavelengh because 450 is just going to bounce of any reflective surface you throw at it.
something like https://www.amazon.com/400-450nm-Protective-Googles-Eyewear-Protection/dp/B071NLMW4S

Whereas exposure to lwir would just burn out your cornea and *could* be dealt with at the hospital, 450nm will fuck your retina for life if you mess up.
So, NO.
Polycarbonate windows will not protect you from blindness.

>>1196526
in the same place where you buy the laser they sell also glasses to protect your eyes, also if you want to make an enclosure use white acrylic walls and for the lid use green or orange, dont use polycarbonate, if something goes wrong it will expel toxic fumes, acrylic instead is safe

>>1196439
Looks like those 2 breakers top middle are main for that panel

>>1196439
Not really... you just do it. It's designed to be removed and installed hot.

FYI cover panel with cardboard to work on it hot or if leaving open like that.

>>1196439
Cover it in newspaper and secure the edges with masking tape.

Or just learn to tuck in. Are you using a spray gun or something? I don't see anything special about it. It's just a box.

Why not just measure it if you're taking it off the board anyway?

>>1196223
103 = 1, 0, 3 x zero = 10000 (ohms).

>>1196237
Thanks bud
Could you please explain this a bit more just so I wont have to come and ask again