I am fairly new at welding so I just came here for some advice.So I have this welding machine.It only has a knob to make amperage higher and lower. I use 2.5mm electrodes,the metal i tried welding on to was also about 2.5mm thick.I cleaned it and tried and at first i got a lot of sticking,so i amped it up to the electrode recommended setting of 70, and it was sticking like a motherfucker, so i got it higher to about 80 and then beyond. I started getting a bit of a splatter and the arc was really hard to make upon contact.
My general questions are: -Is getting an arc... Comment too long. Click here to view the full text.
So I've posted a few times before about my decellularization projects. First I did fruit, then I did a liver and now I finally got around to doing a whole heart. The process removes all the cellular material from a piece of tissue to leave only a white scaffold. This has become a fairly common technique in tissue engineering as the scaffold could be used to grow a new heart if you seed it with your own stem cells. I made a video going through the whole process https://www.youtube.com/watch?v=SjcMyicfrL8
>>984580 my 1st ever attempt at soldering, modding a cable, and /diy/ in general.
its stereo rca to 3.5mm aux, made it because the 3M and longer versions all cost too much dosh. didn't know about shrink tubing or electrical tape at the time, but I was smart enough to separate all the connections to prevent shorts and lucked out with the L-R channels being correct so I still use it.
1st attempt at woodworking. It's a brass resizing die holder. I had to sand it for way longer than I should have because the hole tolerances were too tight on half of em and I burned it every pass I made with the router
>>990386 I took one of the mega PC fans (the 1.5A) rated ones, stripped away everything but the rotor and stator, and 3D printed a 1 foot diameter set of quadcopter blades, epoxied them on, and slowly cranked the power.
At 12Vit was spinning kinda at 20V it was wobbling At 30V it started smoking At 32V it took off, tipped over, shrapneled the blades, and started on fire.
In conclusion, I would not reccomend customizing computer fans.
So my HTC One M8 no longer charges due to a faulty charging slot. I'm trying to replace it, bought all the tools necessary, but apparently I need to take out the sim card and SD card holders first. This requires sticking a pin into the hole near it, which can be seen from the picture.
Unfortunately, the sim card hole is damaged and therefore the metal near it covers it up. It's impossible to access. How do I fix my phone if I can't get my sim card out?
If someone can help I'd be extremely grateful. Already cut myself trying... Comment too long. Click here to view the full text.
Hey /diy/. I have paintball parts. (HPA tank, high pressure regulator & hose) and a gas mask. -IF- I were to connect the 2 (via an adapter for the 40mm mask) and try to breathe through it, what are the chances it doesent work or I rupture my lungs? Pic semi related, some of you guys faces after reading this post.
>>990172 masks are supposed to release pressure from the inside to the outside others only filter the inputs with no regards of pressure differential nothing will happen unless the mask you are taking about is a diving dress why you want to do this anyway? the tanks of those marker/pistols are filled with co2. if you wanna off yourself it wont work
>>990180 No the HPA tanks are for compressed air. What if I blocked off the exhale valve on the mask and put a one way valve after the regulator? So that there'd be low pressure air, and it'd only be pumped into the mask when I inhaled? And im not trying to off myself, just looking for something to do with these spare parts.
So I live in military housing and want to replace the counter in my bathroom because it's ugly as hell. Problem is, being military housing, I can't do that. Is there a way to lay something thin on top without damaging the permanent counter? I was thinking of doing a sheet of copper but I have no idea how to attach it.
>>990105 This. Copper is gonna start going green on you and it will start transferring to stuff you put on it. It will leave marks on the bottom of coffee cups and such. It will get nasty fast. Don't prep food on it unless you don't mind it tasting funny. Wont make you sick though. You'll have to coat it with something. Also, have you priced out a shoot of cooper of that size?
>>990071 Why copper? It's expensive and soft and will corrode. Get a thin sheet of aluminum or even plastic, like 1/8 or 1/4 inch, that'll be cheaper and easier. Where can you even find a sheet of copper?
I assume you're painting the entire drawer and not just the drawer fronts if you're concerned about contact with utensils. The best paint I've used, although expensive is called Reclaim. Its around $120 per gallon, but I only needed one gallon for the kitchen drawer fronts and cabinet doors i did. Its very forgiving if your prep and cleaning of the cabinets isnt perfect, especially on old grease covered wood. Its super thick and self levels pretty well so it doesnt show brush lines or roller marks,... Comment too long. Click here to view the full text.
Hi, about 7 hours ago i was experimenting with a (faulty) esp8266. I noticed that sometimes it freezes and doesn't boot properly, the red led (that states it's ON). I thought it was a power supply problem, so i used a atx power supply. The esp8266 was powered with an AMS1117 3.3V linear regulator, that can provide 1 Ampere of current.
Now that's the problem, the module had the same faulty behavior. I touched it's antenna (sometimes after this it started working properly) and i felt a tingling sensation in my hand. I then tried again... Comment too long. Click here to view the full text.
>>989956 wouldnt it burn before doing any sort of damage to you? i mean, if it was really doing that 3.3w transmit with no heatsink it would most likely burn pretty fast, right? (isnt that chip power rating about 100ma or so?)
>transmit data is like ac @ 2.4ghz >low voltage ac tingles can this be your explanation op, i mean the antena is bare copper
Need a bit of help with a pump. There's some small clips that hold the impellers onto the axles of the pump to stop them sliding up and down. The outer one on either side of my pump is gone and I've no idea what the type of clip is called to search for it. Anyone have any idea?
If you're a university student, there is guaranteed to be a professor or other faculty member somewhere experienced in the patent process. Just ask anyone that looks like they've been around for a while and they should be able to point you to someone that can help you.
Unless you have a pretty beefy computer power supply lying around your best option to power that sub is probably just buying a home audio amp or receiver. You could just run the car amp off a 12v battery inside but that would be the niggest of rigs and you'd have to charge the battery and shit.
Im planning a DIY project for some interior accents. I plan on soldering brass foil tape to glass to form a terrarium. I'm capable of doing this. My holdup is I have no clue where to begin looking for custom glass cutting service who also screen or silk prints onto glass. I can could cut the glass by hand and have it sent in for printing but id rather have it machined and printed. Anyone happen to know what I should be searching for? Is there a specific name for this service?
>>989538 I used to make them by getting the block of paper set up between two thin bits of wood, then clamping them down firmly- mark out the holes about 5mm-1/4" from the edge and then drill holes along the length with a small (generally 2mm) bit about every 1cm or so. Then take the boards off, get waxed cotton and bind the core of the pages together with a ringbolt hitch down the length. Nice thing about the ringbolt is that its got a bit of room so you can either sew the spine to it or it'll have enough 'meat'... Comment too long. Click here to view the full text.
The soles of my shoes have dried out and become porous, and developed cavities/holes. I can't keep wearing them until I've fixed the holes. How do I do this? I thought about just filling the holes with wood glue or something, would that work?
>>988292 I'm guessing it was a bad charger, I'm going to throw out all my cheap chargers soon and only use the reliable ones.
I just woke up one day and the battery was draining super fast (flat in 12 hours standby) and the phone was warmer than usual. Opened the back out of curiosity and saw the burnt ic. Not sure if it's clear in the image though.
i did it in my parents bathroom as a teen with india ink and a sewing needle it was 100% not safe but i didn't have any infections. however, it faded like mad so if you get it on the finger like in the op pic you're better off drawing it with a sharpie. I put my needles in boiling water for an hour and basically soaked them in rubbing alcohol to cool them down. I used piercing antiseptic for the aftercare.
How many of you guys have experience with modding a mechanical keyboard? I'm rocking a Steelseries 6GV2 (for 2 years now) and I still love it so much.
I really love the completely blank key caps on modded keyboards, but they are expensive and the enter key is sold nowhere (its this long enter thingy). I thought maybe sand the key caps and spray paint them. Maybe some more ideas I could do?
Someone suggested I cosplay Onion-San from Undertale and I concluded it was an utterly ridiculous idea: The outfit would be the largest and crudest thing ever seen at my local convention.
So naturally I accepted the suggestion. I think that the best way to go about this would be to make some kind of inflatable octopus costume.. But the problem is that to not have the tentacles drag on the ground I would probably need some air escaping, and to have air escaping I'd need to be carrying a battery and an air pump, which sounds impractical.
to not have the tentacles drag on the ground I would probably need some air escaping, and to have air escaping I'd need to be carrying a battery and an air pump https://www.youtube.com/watch?v=rHXvMcLrLSY
But seriously, how big are we talking here? There are a handful of electric-blower inflatable costumes out there already. Here's an example of a blower that runs on AAs: http://www.yardinflatables.com/Replacement-Fan-for-Inflatable-Costume_p_2178.html And the sort of costumes it goes with: http://www.gemmy.com/Airblown_Inflatables_Costumes_s/1848.htm
>>983954 I'm willing to invest in a good pump since I've been looking at making a furnace, though I don't know how long that would last if I used the biggest battery practical to carry (A car battery for example if that can be somehow used for a pump).
Size of the costume? As big as is reasonable, it's a fairly large character. Definitely bigger than any of the costumes in that link.
>>983955 >I'm willing to invest in a good pump since I've been looking at making a furnace I'm not sure what sort of pumping demands a furnace requires, but these inflatables operate at very low pressure and high volumetric flow rates. May or may not be compatible with your furnace. >I don't know how long that would last if I used the biggest battery practical to carry (A car battery for example if that can be somehow used for a pump). Alright, well let's see: http://www.yardinflatables.com/Gemmy-Replacement-15a-Fan-With-12v15a-Adapter_p_1867.html At 12v and 1.5a, you could run it off a 15 AH lead acid battery for 10 hours straight; such a battery would weigh about 13 pounds. Alternatively, an equivalent capacity lithium pack would weigh about 5 pounds.
Now, the inflatables this pump is designed to work with don't have external air jets like you're describing (that is what you're describing, correct?). Implementing jets would be a pretty significant risk, since you can't really know how well it'll work until you try it, and once you do try it, patching the jets up again if they don't work will only make the arms heavier and more saggy. If you have a ton of time, I MIGHT consider trying it; otherwise I'd just do my best to build the costume without them and maybe use fine thread or something to suspend the arms (or just pump them up enough and keep them light enough to stand on their own).
I want to build my own energy storage, did any of you ever made one. Essentially I want to create a battery which I would charge with my PV, and use in peak hours. I am more interested in the process and things that are necessary to look for and problems facing while doing the project.
>buy a powerwall I want to know how to make one and is it more feasible to build or just buy it.
Questions that I have is, what batteries are more reliable, Zinc-Bromine flow, Li-Ion NCA/FCM, Li-Ion Ferid, or supercapacitators?
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