Archived threads in /diy/ - Do It yourself - 237. page

>>1127471
that guy died of leukemia or something and looked like a methhead

how actual people do it:
-get a degree in physics/nuclear engineering
-get a job with a company with the resources to build reactors

'regular people' shouldn't fuck around with radioactive materials

>>1127479
Wouldn't OP just need lots of lead to not get assblasted by the radiation?

>>1127479
Why in the world would you do that?

This is /diy/. We don't spend money or get degrees here.

>>1127471

To be honest though OP I don't think anyone here knows how to build a reactor

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It's a 3 phase motor. The black thing is a capacitor to make a botchered 3 phase signal from a single phase supply. It's called Steinmetz circuit. Pic related. To test it, cut the 2 wires leading to the motor and apply 110 or 230VAC, depending on what is normally applied. If it does not run, disconnect immediately. Maybe the cap is defective, and a new one could solve it. If the resistance of all phases is the same, it is most likely the cap. Find someone who knows more than me to guide you to find suitable replacement.

>>1134389
could be just about anything from that picture
test it? find out what voltage it takes and then let it have it.

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>>1134389
if it's a permanent split-phase motor, the part on the side is the capacitor.

three pin connector is neutral (white) and two hot windings
one winding gives low speed, one gives high speed

depending on if it's a 3 or 2-speed fan, connecting both hot windings at once either gets you turbo speed, or a smokescreen.

>>1134119
i don't make it a habit to hand out internet compliments but that is bad ass how did you make that?

https://www.youtube.com/watch?v=zi8ShAosqzI

OP here, I used pottery wheel thing with a bunch of clay, had a layer of the white stuff then used black glaze kind of like ink wash painting. The pine tree needles were just done with a smallish brush, flicking it slightly. I wish I could describe the process better.
It's hollow on the inside.
*was
It broke about a year and a half ago. I guess I want to replace it.

>>1134119
What types of kilns do you have access to?

>>1133900
12ga breeching rounds, if you don't have them call in a man with a gun threatening suicide to 911.

try to get something thin under the edge and pry it up

if it's your door, go to town on it till something breaks

Did you try the other side?

>>1134725

Can't you (have someone) weld a bracket out of I-beam so you can put supports left&right of the doorway on both sides?

You still sacrifice some space, but the doorway stays mostly the same size.

>>1134725
That wall looks like rebar (steal rod) reinforced poured concrete.

If that wall is only supporting a 1, 2, or 3 story house, then it is fine.

Is the structure above wood or masonry?

I'd only be worried if the cracks were wider, or were cracking vertically above the lentil of the doorway.

The "fix" of using bricks and railroad iron is stupid.

Here in the USA, if there were concerns about that concrete, we'd acid etch the concrete and EPOXY and lag-bolt a steel spanner brace, using a 1/2" thick steel plate, by about 16" wide and however long the span is x2.

Without knowing more about the building, I think OP is overreacting.

>>1134754
In other words. Hire a professional to look at it and tell you what to do op.

>>1134566
>and may not be the best quality.
do they have any markings on it, besides impedance and "wattage" ?

i.e I'm asking for :
- # of watts at 96db SPL/1m
and/or
- speaker sensibility : # of dB SPL at 1W

Those parameters are important so I can tell you if it's worth spending some time in testing/restoring them or not

>>1134568
No other markings on any of them (the two medium ones are missing the back panels). I also tried looking up the speakers online and I didn't find anything useful about them.

Two biggest ones are Pioneer, model CL-35, smallest one has no brand name but says model 411 on it.

>>1134577
>Pioneer model CL-35
Can you pull the grill cloth and take a picture of exposed speakers, so I know how many based faggots are living there

Covering something in sob doesn't make it underground in my world.

Those look like plastic septic tanks cut in half and set upside down. They'd hold up some dirt and sod but probably not much more. Some of the pictures show grades that just aren't possible. The first rain would wash away a lot of the dirt covering the shell. Grass roots can't stop erosion on a 144 pitch.

I like the shotcrete idea but I bet those walls would cave in application.

>>1134480
these are not underground nor houses, these are shit memetubes that has zero merit and only useful if you have too much money and on another planet

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What do you think of this underground man?

>>1134323
>i've connected an odroid c2 to a display and plugged in a usb wifi module
good job

>>1134325
hey it still all took quite alot of research and if i used a other screen i would probably had to write a new kernel for the screen and im not that good with programing...

>>1134329
> I took the easiest path

You're really not selling this well OP.

is that supposed to be a shut off valve on the end?

what about under the sink?

you might not have a choice other than the main shutoff

>>1134217
If u can be quick and wanna take a bath just jerk the old on off and stick the other on on open so u dont fight pressure. Be sure and liquid teflone tape the threads on the nipple and hope it holds. Get it good and tight and turn the valve off. Hook uo your shit. I've done it on a 3rd floor apartment for about the same reasons. Just grab every old towl and blanket you have and throw a plastic sheet down so u dont flood the nighbors. Have fun.

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>>1134217
Use a pair of quality vice grips on that nub?
I guess you could file it down to a square shape. Had a outside spigot that stripped. My dad filed it until it fit a handle with a square hole.

>>1133552
>n64
>snes
as someone who at 8 years old thought i was a genius for throwing away all the boxes so i could if all my games into a cupboard take my advice: put your games in their boxes and buy a glass display case for them. never touch them ever again. get an old computer / pi or some shit and some usb adapter to plug your joypad in if you want i guess.

>>1133552
>avoid getting molten polypropylene all over my everything

k stop here

molding and casting are 2 different things

a polyproplene casting i dont think is a thing. it is a thermoplastic and you will need to maintain temp and constant pressure on the plastic to fill the mold completely before the plastic freezes and stops flowing.

to make a case like you want would require large amounts of heat/pressure because of the total surface area


to be honest, casting is probably what you will be able to do

the chinks make a 2part kinda case, with a hardish outer shell case and a rubbery plastic for holding the game

i suggest buying cases en mass and then casting the game holding section seperatly

or make a mold with 2 parts and cast a hard/soft section

or make a 1 piece mold for casting and find a the most similar epoxy resin you can to match PP properties

you are looking for thermoset plastic resins and casting

>>1133576

Well, apart from a knackered save battery on a Secret of Mana cartridge, they still run like a dream, so...

That, and the cases i'd make are intended to basically be a portable display case, but i'll still play them games.

>>1134490

Okay...I'm guessing something like injection molding with polypropylene would require a mold material too expensive for the average household tinkerer, then, if not be outright impossible. If i understood properly (this is my first foray into any type of casting/molding outside of arts class clay modelling, please bear with me) i'm better off trying for some other plastic that can make a sturdy living hinge?

Any ideas? Either for good enough mold material for polypropylene or a plastic with properties similar to polypropylene without the high temperature requirement?

>>1133178
>The roof is on a 1/12 pitch and will be rubber. I am in Michigan so snow load is a concern.
You done goofed, son.

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>>1133187
It fronts Woodward (major road) and they restricted me to 15' frontage with a 30" parapet wall, so to keep my ceilings high that's what I did. It will drain water just fine, but snow will be there for months. I am spraying hydrocarbons into the atmosphere as we speak to keep the snow away.

What kind of hurricane ties are you using? Perhaps bigger ones would help?

Buy a timer with a pause function?

>>1132396
depending on build of the timer and precision you want it have, it may as well be easier to build one from scratch.
just use a simple counter clocked at suitable frequency and trigger counting when button is pressed.

>>1132398

I'm not sure how that'd work...


>>1132415

I'm looking for timings around 30s, it's for an espresso machine to time the espresso shots.

There is a mechanical lever switch on the machine which triggers the pump solenoid and pours the espresso, I would just like to hook up a kitchen timer to this switch.

I have previously modded a wireless door chime to trigger from the output of a photoelectric switch and that is still working pretty well.

I saw someone do an arduino project for this very problem, he used a hall effect sensor with the arduino to sense the pump solenoid activating (the mechanical lever switch activates the pump solenoid ) https://www.youtube.com/watch?v=mLaiLHmd-CU

However, I think it'll be much more expensive in terms of time and materials to do the arduino well, as I would need a power supply, waterproof box, separate housing for the LCD if it's mounted separately from the arduino, etc.

Do electronic button press timers exist?

>>1133215
You basically can't without it being horribly obvious. They're stupidly simply so anything going wrong will be caught immediately and either be fixable in five minutes or point right at you for doing it on purpose.

>>1133216
:(

>>1133215
loosen the bolts holding the tank to the bowl.

>>1133131
Good luck with your veggies friendo

>>1133131
see
>>>/out/944669

>>1133143
th-thanks

I do not have a picture of mine I made, posted it long ago. But what I would suggest is going to a local mill and getting a 2x2x3 chunk of walnut. Cheap.

great thank you i will give it a shot

>>1134188
This, use close grained hardwood.