Archived threads in /diy/ - Do It yourself - 42. page

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>>1226818
Creating a silicone mold
(2/10)

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>>1226819
Mold with original removed

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>>1226820
Completed mold with original

>>1226758
pc power supplies don't have switches anymore between geographic regions, the switcher can adapt the duty to take input between something mad like 90-250v, probably a little outside that too comfortably.

i doubt they would care if it was a DDS wave, the only thing stopping it working on DC is the input transformer, smps doesn't give a fuck.

>>1226773
however the SMPS does give a fuck on undervoltage conditions (87v)

As far as i now it starts making noises and the transistor go nuts due to overcurrent compensating low voltages, shortening the life of all the components at once, and sometimes even killing the SMPS (has happened me at least twice)

>>1226778
Run the PC gear on a 220V dryer circuit then. Then voltage drop will only go as low as 174V which is still in range.

>>1226453
>regular, household silicone sealant/caulk?
>Will it last in an engine compartment of a car?

I would pick a brand and a type and google it.

>>1226455

I have some bathroom sealant at home and was just wondering if I can just use that instead of having to buy some high-temp grade stuff.

>>1226459
>I have some bathroom sealant

I would read the brand and type and google it.

>>1226348
Proceed

I've never really been able to wrap my head around the observed and not observed bit so being able to try it myself sounds pretty cool.

>>1226353
Ok, first let me tell you what I think the "observed" really means.

Imagine that photons are 4D objects (ie, can be in many places at the same time), but we live in a slice of the 4th dimension (a time infinitesimal, or dt).

i.e. we are moving on time one 1/inf of second at the time (in reality is not 1/inf, its planks time).


When we "observe" this, the location of the particle got "fixed" in our time line.
Why? Because we can only see our 4D timeline one 3D slice at the time, in this 3D slice, the photon was in a single location.
But the photon was also in every other location in other 4D lines.

Helps if you watch this.
https://www.youtube.com/watch?v=JkxieS-6WuA

But I only care up to the 6th dimension.

I'll post procedure in a minute.

Fuck off tripcunt. It's not required nor welcome here.

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>>1226080

Easy mode : Get the ecu from a manual one, 35 bucks at your local pull apart place.

Intermediate mode : Sweet talk pablo into passing it for an extra 50 bucks.

Hard mode: Swap it back to auto , pass smog and inspection, swap it back to manual.

Fuck it mode: Leave it as is, use it as a track car get another car to daily drive.

>>1226087
He said they didnt come with manual cars

>>1226087
Easy mode wont work unfortunately because there is no "manual one" in existence.

I don't have the gumption to try a bribe haha.

Fuck hard mode.

Thanks though. I appreciate the reply.

>>1225581
Just build your own table saw, they aren't complex machines.

>>1225581
>Better stock up before the price skyrockets.

this is for pro stuff

besides festool bought sawstop a few weeks ago

>>1225581

Modern table saws are apparently a QA crapshoot with everything being built in China or Taiwan. (Excepting the $10k+ industrial sliding saws built in the US). I'm in the market for a cabinet saw and my plan is to bide my time until I find an older used Powermatic or something that's been taken good care of. I found a restored one on Craigslist but I just bought a house so I'm down many thousands of dollars and can't afford another big purchase right now.

Too tight, they should only have about 15-20lb of torque

>>1224998
i feel like ur right but a lot of sources say around 250 ft/lbs. It did take a 6 ft bar to remove it anyway

>>1225001
i mean 150

wtf is with these captchas and time delays

>>1224763
I recommend just getting the attachment for your regular drill.

>>1224763
I have an angle adapter for a bit&brace.
But as >>1224768 points out an adapter is easier.
Plus you can step up to a more powerful drill.
The other thing that helps is shorter bits. Especially if you are spending all day drilling holes in a stud wall. I just hacksawed the shank off of a normal spade bit.

>>1224895
Oh.. the upside is single units can be used one-handed. Adapters can be twitchy.

No, thank you.

>>1224362
how can I make happiness? the wage slavery looming over my future is causing dread.

>>1224362

i read this in the catalog as "i've made sauerkraut pickles liquid detergent, dishwasher detergent is a very effective deodorant, cheese all purpose cleaner, beef jerky kombucha"

pass on everything except the beef jerky kombucha

Engineering. Won't warp, and don't have to worry about re-staining/finishing it every few years. No one can tell the difference anyway.

>>1224251
Thanks. I've heard the same from two contractors so I'll go with engineered

Good luck finding it at that width. If you can, all the power to ya. I found it hard last time, but then I wanted 1/4" finish.

You should find one at an 1/8 for sure, but you'll never be able to refinish it if you desired.

>>1222399
>if i got it i would just get a single phase motor for it

What are you, gay? Get a VFD for that sweet speed control.

>>1222402
nigga a vfd wont magically give me 2 extra phases

>>1221988
Troll.
Such a troll.

Please be a troll.

>>1221988

Looks like the cover plug came off. You can do a fast emergency plug using a can of Great Stuff foam.

>>1221993
This. I rented a house once that had two big ones like this, and 3 little ones. ALL of them were missing the caps.

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>>1221894

>>1221894
Not really sure what you need other than some kind of time delay relay or something like that wired in series, but ill bump for more pictures of your models.

>>1221894
There are a few circuits that can do that, or you could just bodge up a small micro controller. VB Stamp, PI, or such.

Of course, you could buy one of those LED candles and rip the guts out.
Like this https://www.youtube.com/watch?v=4BPJwNx4bvc

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alright, third time's the charm.

>>1221700
Yeah, dot-matrix, not segment, I should have been more specific. Maybe OLEDs would be nicer to look at, like one or two of these:
https://www.aliexpress.com/item/1-3-OLED-module-white-color-SPI-128X64-1-3-inch-OLED-7pin-LCD-LED-Display/32818944937.html
A little mini-scope or a bar graph of current would be quite nice to have, as would an Ah accumulator, or even just a resettable peak current readout.
>What kind of aesthetics can you get out of a dot matrix anyways
Fast animation might be out of the question, but at 128x64 in a 30mm diagonal screen, the possibilities for aesthetics in 16x48 character boxes are plentiful. You like blackletter numerals? Nixie style thin and modern? You really want dem Slav runes? You got 'em. There are even modules such as Pic related with the top (or bottom) 1/4 in yellow and the rest in blue, so you can have brighter indicators for ranges or icons or whatever.
A full RGB screen is almost certainly overkill for a power supply. I could see it being nice for programmability, if one wants to glitch the input power to a chip or assembly or whatever, but that's another DAC or two and associated circuitry, so nah.

>>1221721
I wonder if the guy who posted that as the OP to his "extended battery phone" thread will find out that I suggested it for the /ohm/ pic? He was kind of upset that we laughed at his design. That is part of a plastic fork, by the way.

>>1221727
>128x64
I was actually planning on running the thing without a microcontroller and just using some simple 7-seg decoders or something similar, but you're not giving me much of a choice. What would taking the digital straight from the ADC and putting it into the pins of a dot matrix look like? I could probably throw the signal into a few decoders and maybe demultiplexers back and forth until I get something that looks neat, but that's more along the lines of an art project.

I agree that a bar graph would be a really good way of displaying voltage and current, like on the bottom of a good multimeter's screen, but I'd like a high resolution so I can see subtle (300-100mV, 30-10mA) changes, meaning at least 100 pixels/LEDs. A single line, wide dot matrix would be perfect for this, but what kind of encoders do they have in them? Is it typically raw digital video data in, or text data?

For the numbers themselves I think I'll look for the most aesthetic 4 digit 7seg display I can find, and see if I can pull the parallel straight out of the ADC and into the 7-seg decoder without any digital processing at all, and while it would have to be fixed decimal-place, I think I'm fine with losing a little precision on the low end.

And now a good idea: take the output voltage and use it to drive a frequency proportional to the voltage to a small speaker/piezo element, so I can HEAR the difference in the voltage! Current too! GENIUS! (I'd use the (buffered) output voltage as the threshold voltage for an opamp relaxation oscillator, and do the same with current except amplify the voltage across a shunt and drive a lower frequency)

>>1221743
On this note, is it better to measure current by amplifying the voltage across the shunt, or just using a very low reference voltage on the ADC?

>>1220260

Yeah that's one Eva Green tier stacked mermaid, but there's no need for half measures, if you're gonna carve a goddamn mermaid give her a legendary rack

9/10 one point removed for mild yet realistic uneven proportions

>>1220260
Have you ever seen real tits anon?
I think not

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>>1220260
>to me they look a bit cartoonish
they do, but they arent too terrible. You should definitely study up on anatomy and other drawing tutorials and shit. It may seem totally unrelated, but there's a lot of applicable bits of wisdom here and there.