Archived threads in /diy/ - Do It yourself - 25. page

http://micro.sci-toys.com/grinding is roughly how you do it.

Note that China will sell you one for $10 with free shipping, and that link calls for more than $10 worth of sandpaper alone. Making your own is only efficient if you can make them for your whole class, or if you already have access to a full set of glassblowing and polishing tools.

>>1231609
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0098781

Or amazon. This would be like a hundred times better than the foldoscope because it has a stage and light. https://www.amazon.com/AMSCOPE-KIDS-Beginner-Microscope-Magnification-Accessory/dp/B071JQFXC4/ref=sr_1_16?ie=UTF8&qid=1503374592&sr=8-16&keywords=microscope

well. i expect more for 4chan. but sthank

A bump and bedtime. Also looking into laser cutting/drilling.
I found a company that will sell me the battery cases and jars etc but I was just wandering if it was possible to DIY plastic at home. Didn't see much that could handle polypropylene but i think ABS is very resistant to strong bases like the potassium hydroxide int he electrolyte.

Bump?

>>1231586
Go to the 3dpg thread. Also, shapeways offers nylon which should be chemically resistant but Idk for your purposes

https://www.youtube.com/watch?v=BhoqS5sP0P4

also this: Oscilloscope From an Old Television
https://www.youtube.com/watch?v=nAzQsl3gKMY

>>1231569
If you're ausfag, I'll buy it.

>>1231548
>he bought the BOSE meem
https://www.reytid.co.uk/products/reytid-bose-quietcomfort-15-qc2-qc15-qc25-replacement-ear-cushion-kit-ear-pads-brown
1000 hours in Google, yours for $9.99

>>1231548
that happened to me too and my mom sewed them back up. 12 years later still going strong

>>1231548
Send them back to their headquarters in framingham ma, Bose mountain and they'll fix them for you, they're good like that.

File: 1487030737027.jpg (92KB, 695x905px) Image search: [Google]

92KB, 695x905px

>>1231501
Swallow Watermelon seeds.

>>1231501

http://www.motherearthnews.com/

get the fuck out of FFA if you dont know what to do you stupid ape nigger

raise broiler hens
grow some crops
kill yourself
landscaping
fix a tractor
indoor gardening
etc etc

stop being retarded

>wood floors in utility room

bruh...

(Shit's fucked, sorry)

>>1231500
It's a livingroom.

>>1231470
Just dry it out the best you can: mop, shopvac, blowers, ventilation.
Go crazy on drying it out. In the end, you'll have less to repair.

Lol looks like watered down rust. It should either be full of oil or packed with grease. Clean it, pack the gears with grease and seal that shit back together.

File: 20170810_194451.jpg (3MB, 5312x2988px) Image search: [Google]

3MB, 5312x2988px

>>1231372
Is a 2 stroke engine kit that can be put on a bicycle. Make is "Seeutek", but I haven't found a website for them.

>>1231372
F

>>1231350
I build tater canons. A lot of people run air and use a sprinkler head for a trigger with some modifications.

Bump for interest.

File: mascots.png (1MB, 1328x728px) Image search: [Google]

1MB, 1328x728px

>>1231350
i want to FUCK this tiger!!!

> these ones seem to shoot gas before the t-shirt and suck the tshirt from the barrel behind?
that sounds inefficient compared to shooting the gas behind the shirt. Most single shot t-shirt cannons just do that, usually feeding from a tank and through a simple pop valve that's released by the sear of the trigger group, like a PCP air gun.

Are you sure that's not some kind of gas line to re-cock the gun or turn the cylinder or something?

anyway look into PCP airguns, they're probably pretty similar to what you want in design and construction, you just have to scale it up.

I helped build one in high school. Its just compressed air. Make sure the shirt is rolled tight and fills the tube well in order to help build up back-pressure. Its been a long time so i dont remember exactly how much psi we built up, but we only used like a 5 gallon tank to discharge into the tube, but we had a seperate storage for the compressor so we could fire rapidly.

>>1231327
I'll look into it more if you explain the process of the etching.

>>1231336
http://www.instructables.com/id/How-To-Electro-Etch-a-Solid-Metal-Plaque/

Really best expained there

>>1231342
Unsteady of vinyl decals I cover the whole part in nail polish and scrape it off where I want the metal to be etched. Good enough for goofing around.

>>1231306
call police

you don't need to sweep frequency just a wide band output.

pick up a copy of microwave engineering - pozar if you need help

File: 1500846624860.jpg (58KB, 567x633px) Image search: [Google]

58KB, 567x633px

>>1231306
First question is : is your nieghboor watching TV through Air(analog or digital), cable, Satellite or DSL ?

Different signal niggering strategies applies.

Air/cable :
Get an old VHS VCR and a gay porn tape, make sure VCR is prehistoric enough to out it's signal through a UHF/RF-modulator (aka antenna cable).
Most modulators are adjustable, so plug the VCR with the gay porn playing in it, and adjust the modulator until it jams the actual TV program you're watching.

Two options :
1*/ you're on DTV and your TV is not smart enough to detect a good ol' analog signal : DTV is just jammed, all the multiplex is unwatchable.
2*/ you're on analog or your TV is fucking smart to auto-switch on analog : gay porn ensues xD

Cable :
Same as before, but frequency range differ from "air" TV : build a RF-modulator on the appropriate range (as it's for a jammer a crappy one with a *metric* shitton of harmonics would be ok)

Sat : kick the dish, those old ladies have to be aimed toward the Sat with a 1° precision and are a pain in the ass to readjust, old man will be pissed off until the sat guy come to deal with the dish.

DSL :
You need to corrupt the baseband 4kHz-2Mhz, so his DSL datarate goes sufficely poor to be incompatible with TV carrying.
Member the composite out of the VCR ? it outputs an 1Mhz-ish signal : get a *matching transformer* to adapt 75R TV-impedance to 125R phone-impedance or use a fucking 24V/240V (or 12V/110V if you live on the retarded side) transformer, signal will be distorded as fuck but circa 4-6V of amplitude which will be fairly enough to jam the whole DSL band, considering added harmonics and attenuation at such frequency because of the unsuitable type of transfo.
>Hardest part is to wiretap the shit on old man's phone line : if it's not possible, a 10-22nF 400V non-polarised capacitor plugged in parallel on the line will nigger DSL-spectrum enough to forbid TV... Try it at home to figure the best capacitor value to plug.


Have fun !

>>1231306
Get a TV-B-Gone and keep turning his shit off after quiet hours. If you want, use a 3W IR LED and mount it all in a flashlight body.

>>1231250
Ducks do a great job. For algae use a bale of straw.

>>1231284
I have some 50 ducks but they stay at a pond nearby the house, the ponds I`m willing to clean 1 and a half klicks away from the house.
I`m not willing to use chemicals because some of the water gets pumped back home by a water mill system, not willing to turn that off and apply it either because this particular water flows into several smaller ones.
Reason why I wanted to try some aerator or remove it manually.
But thanks, much obliged.
Even if managed to put some ducks there they would soil the water that goes back home.

>>1231284
But if you mean putting up a bale of straw and hooking it into the tractor and then dragging it on the water, I can see that happening.

>>1231233
>Just plug it in and go?

for that particular one you also need sticks. a mask and gloves come in handy as well.

also that one has a 50 amp plug which is not commonly found except behind a stove or dryer.

yes provided say your common houseplug is 10 amps, and the welder has a 10 amp plug

if not and the welder is a 15amp plug then you can either get a 15 amp outlet done for your garage, or get a 15 to 10 amp cable. also there's three-phase welders which you probably wouldn't be able to run in your house

Thanks all. That was quick!

Possible that the external screen is disabled. There would be a key combo on the keyboard that came with it if you still have it. Also if Windows is installed you can do Windows + P to enable it as well

i was thinking about is but since i dont have a working windows on this machine nor can i see if anything is wrong since i have no working screen i need a solution that i can apply while mobo posting or something like that

i have actually found out that HP notebooks just need the lid closed to use external monitor as a default one but since i dont have a lid to begin with i cant try out if this lenovo board has the same feature

The gpu unit is probably fucked. Is it a dedicated gpu or integrated? If its integrated, the controller is probably fucked depending how old it is, you could probably switch to integrated graphics but idk

>>1231107
The empty tank on the left has to be upright and off the floor?

>>1231108
Yes

>>1231107
aluminum angle form
1/8" x 1" x 1" should do it
size it so the sump fits in just so
> are you prepared for that sump to flood your house?

>>1231080
Jack it up off the ground and put piers under it as needed. If the entire floor is shot you will need to replace it.

>level the earth
>Put down cheapo paving slabs

>>1231110
>>1231268
Both.
untreated luber won't last if it somes into contact with the earth.
You need to jack it up, determine if you can save it, and the offset it from the ground.
Pavers, Pre made offsets, treated lumber.

You have so much dry rot there, it's hard to tell if it's worth the effort. Depends on your budget and needs.