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Archived threads in /diy/ - Do It yourself - 125. page

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Hi /diy/!
I'm pretty much experienced with guitar tube amps and I got a bunch of transistor amp that would need servicing.
3 of them have a similar problem: power amp failure / various troubles (pic related: sunn beta bass on 4Ω load)
In the last case a power transistor swap might do the trick (preamp et power supply has been tested and OK) but I was hoping of making a new PCB, from an indestructible circuit (peavey bass 400, or sunn beta seems to last about 30 years...) and replace the whole power board in all my amps. I have to get my hand on matched transistor anyway, so why not remake the whole board?
Problem is: I can't find any decent information on these simple 100W amp circuit (with some details on a few points, if necessary)
I tried a fuckin' mosfet kit from ebay which last 15 minutes before burning up.
I'd like to make the same thing as I did with tube amp: make an brand new reliable vintage circuit. There's a bunch of "vintage" store to make every kind of tube amp, where my 70s semi-conductor electronics are?!?!?
14 posts and 3 images submitted.
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Mosfet circuit burned out after 2V overload...
http://www.ebay.fr/itm/EBB-150-Mosfet-Power-Amplifier-Module-125W-RMS-Audio-Disco-PA-/121457218844
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>>1186640
>There's a bunch of "vintage" store to make every kind of tube amp, where my 70s semi-conductor electronics are?!?!?
I'm not sure exactly sure if I'm understanding what you are asking, but you shouldn't buy vintage transistors, since there are a lot of knock offs floating around the web. People find cheap transistors and remove all the markings on them and replace them with product codes and makes of desirable brands. It seems weird, but it is done to rip off audiophiles who "need" that exact vintage transistor.

Your best bet is to use google and find a modern equivalent of the transistor that you are looking for from a reliable source like mouser or digikey or whatever is the equivalent from where you are from, since there are knock offs of more expensive modern transistors as well.
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>>1186659
Maybe I've been a little vague on this point. I heard about these crooks methods to get the "new old stock" germanium transistor to put in your fuzz pedal...
I'm not planing on making a transistor amp with vintage part. Just like the tube amps I made (pic related) I want to follow a vintage schematic/PCB, with brand new components. I was hoping to find equivalent semi-conductor part quite easily, but it's not the case. Just like I don't find a "reference" schematic for a simple 100W amp.
For instance for a tube amp, I may go for a bassman-like circuit.

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What's a good way to sleep in the woods without detection? Tents and hammocks are too obvious.

So far I have been digging ranger's graves with a foldable shovel. I use a bivvy I made out of duct tape and garbage bags (with a duct-taped mosquito net at the head). I line the bottom of the hole with cardboard boxes and cover the top with cardboard boxes to avoid being detected (a camo tarp would be better but I don't have money).

This was fine until I found a snakeskin nearby me in the morning and it's become important for me to keep snakes out. I've been considering in making a mini-tent out of a mosquito net and a garbage bag with PVC pipe for the poles and digging a slightly deeper ranger's grave (going from 8 inches to 12 inches). But lugging the pipes around is challenging.
59 posts and 15 images submitted.
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>>1186085
You obviously have internet access, put in some job applications and get an apartment
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you cant escape your problems by living in a burrow in the woods, anon.
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>>1186085
Cammo dude, and picking the proper location. Basic tent with proper cammo is dang near impossible to spot if you are reasonably away from high traffic areas/trails.
For structure look into spring poles like in the popup-folding tents, new replacement poles are fairly cheap and you could salvage them from a beat up tent.
All the snek wants to do is get warm and cuddle.

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I have been working at the home depot in the lumber department for 2 years now, and literally every saturday/sunday i will cut at least 10 4x8 sheets of 5millimeter luon down into 6 inch strips. What in god's name is the bane of my existence being used for?
135 posts and 41 images submitted.
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DIY shiplap walls. Blame mommy bloggers.
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http://www.tableandhearth.com/2015/09/easy-diy-shiplap-wall.html

Every blog is like this: 10,000 words on nonsense before getting to the point.
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>>1185378
and, you couldn't use the existing 'Im a fucking RETARD! So, I gotta job in Home Depot! AMA!!!' thread (which is a Lowes thread this week, but still full of HD cunts, vive la difference) to ask this banal, mundane and of interest to fucking no-one bollocks in, no?

Anyone WITH HALF A FUCKING GLIMPSE OF INTELLIGENCE might have, y'know, ASKED THEIR FUCKING CUSTOMERS WHAT THEY ARE USING IT FOR - but, then again, you proably even look such a retarded fucking gimp, they keep you chained up in the back and avoid eye contact, just in case you find out their address and try and sneak home with them. Go get run over collecting trolleys you useless fuck, and never darken the door of /diy/ again, FFS.

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The old thread didn't open, so here's a new one for Mad Max -style, post-apocalyptic -looking car tuning.

I have bought a 1996 Mazda 323 and a welding rig for this, and my goal is to make it look as post-apocalyptic as street-legally possible. I have until the start of May to make a list of planned modifications and get it accepted at Trafi (Finnish office of vehicle inspections), so ideas for cool-looking modifications are needed the most before the end of the month.

Some other people got interested in similar projects too, so feel free to post whatever you're planning or making too. The station wagon in particular was pretty awesome.

What are your thoughts on the topic?
190 posts and 64 images submitted.
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>>1160368

Here's some pictures of my project car, to give idea of what I'm working with and for sketching ideas on.
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>>1160369
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>>1160371

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Post yours or others, pic not mine, honest.
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>>1188294
A jet black coffee maker sitting directly beside ivory white toaster oven. Tacky, Burger.
> ooze into your sweatpants, hop on your mobility scooter, cruise to Walmart, and rectify that right now
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>>1188294
so why put the cabinet handles on like that?
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>>1188332
you'd think they'd maybe notice, after the first one or two - step back, listen to that inner mumer saying, 'nope, this is shit..' Not a bit of it, carry on regardless, to the death.

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Im making a gun stock and i have this beautiful piece of maple. Ive been sanding it down and had set it down for a week or so and there are dark streaks in the grain. I think its dirt but ive been sanding the hell out of it and it wont sand out. How can i clean it?
21 posts and 1 images submitted.
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>>1187708
Oh it's possibly a reaction with steel wool if you used it at the end of your first sanding process. Also, planer (they's expensive) or a wood scraper? I have no experience with the tools, but keep in mind if you've been sanding that the abrasive materials get on the wood so you don't want to rework with tools what you've been sanding.
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>>1187708
Did you use steel wool or an oxide paper?
It looks like spot rusting.

Use bar keepers friend. Make a paste, apply and let sit for a few hours, then remove usibg a synthetic sanding pad .

Repeat till gone.
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Steel wool shpuld only be used after you seal to stock.

It sheds fiders bad.

Brass wool or synthetic are the way to go.

can I flame broil my entire lawn, grass and weed, till the dead stuff under and then re-sod?? faster than taking off the top layer with a sod cutter
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>>1183665
Sure. Might consider spraying a pre-emergant for broad leaves and just seeding after tilling though. Less work, just like the lazy trolling you're trying to accomplish with this thread.
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>>1183670
I am trying to avoid the use of herbicides. My main concern is does all the dead plant material affect the soil once its all tilled in? I assume the plant matter will all be dead and dry and not composting
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>>1183665
>>1183671
It will compost and enrich the soil. I use boiling water to do the same thing.

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What say you? Is their test conclusive?

https://www.youtube.com/watch?v=Zrp0iNLWu2k
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>>1189044

>DeWalt and Milwaukee on top

sounds right to me. both have a wide range of tools that work off the battery and are comparable in price. it comes down to personal tastes really.

also ib4 HUR DUR BLACK AND DECKER PRO LOLOLOL!
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>>1189068

Well I mean the DeWalt kind of BTFO everyone else here. The performance of the Hilti was pretty bad DESU.
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>>1189368
>The performance of the Hilti was pretty bad DESU.
so bad, they both picked the Hilti as 'the one drill they would most like to have from the bunch' kind of bad ? 20 fucking year warranty kind of bad ? Significantly cheaper than that POS Milwaukee that never managed to win anything, and only beat Hitachi on a strange 'bonus points' system kind of bad ?

DeWalt won everything hands-down, its the best all-rounder, Emus confirm. Hilti is the most comfortable drill to use, by some distance, if you using a drill all day, every day - and that warranty. Hitachi wasn't far behind the DeWalt, would make a good choice for professional all-round users allergic to bright yellow. DeWalt-Hilti-Hitachi - take your pic, they all the fucking same anyway.

Vanlife guy here looking to make a wifi antenna.
I would like a simple magnetic thing I can pop up on the roof.
Has anyone done something like this?
11 posts and 2 images submitted.
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Bump for interest. Nomadic or do you stick to one city?
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>>1188835
Hot glue a magnet to an alfa wifi atenna.
keep in mind that the metal siding of your van is going to make it a directional antenna if you stick it on the side.
Protip: Longer antenna cords will dampen your signal
Theif tip: You can take a magnet from a grocery store where they hang all those items on the side of a shelf.
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>>1188839
Nomadic.
Driving a semi truck right now to make money then going to central america for the winter.

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Can I wire the audio out of a media (e.g. mp3) player to the (play) tape head to an old cassette player and expect it to work?
15 posts and 2 images submitted.
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>>1188720
not easily, no - but you get cassette adapters (mostly designed for cars, maybe a fiddle in a deck with the analog in wire coming back out) - that would work, but, as you'd need to connect the deck to an amp anyway, not sure why you'd bother just connecting your digital media player to the amp directly.
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>>1188720
Please get a cassette car adapter, are you trying to record to tape? If so just use the rca jacks on the back that say "rec" or record. If you are trying to use it for the tape saturated distortion sound for a drum machine, use a cassette adapter. Dont detroy the tiny toshiba deck its kinda hard to find those.
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>>1188729
device had some space in it so I thought I could fit a rpi in it and a touchscreen in place of the casette player

I'm trying to make some small tables for my apartment instead of buying them. Most of the wood I'll buy will be s4s since I don't have room or money for a planer so a true clean cut is what I'm after.

What kind of saw should I go with?

Circular, Jig, Compound Miter, Portable Table? I don't have room for a full size table saw and would need to move it between my storage room and outside to use. Once I get a house I'll get a table saw but what would be most versatile for now.
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>>1188303
bow
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>>1188303
festool domino
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Hand

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I want to limit the maximum speed of a wheel automatically. This wheel only accelerates under the force of gravity whilst travelling down a hill.

I plan to put a centrifugal clutch inside of a rubber wheel of diameter 70mm

Once the wheel spins to ~1200 RPM, I want the clutch to engage, and for the wheels maximum speed to be maintained

As the clutch engages, there can be between 0 and ~180N of force trying to accelerate the wheel (depending on the angle of the hill and the weight the wheel is supporting).

It MUST be smooth. No abrupt stops, just a gentle sliding of the clutch to maintain a maximum speed

Does this seem like a viable concept? Or would a centrifugal clutch work in a way I am not foreseeing?
28 posts and 6 images submitted.
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how on earth is a gravity powered thing with little wheels going to be moving that fast
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>>1188028
70mm diameter wheels at 1200RPM is only 15kmh (10mph)
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I don't think that's an "only" amount of speed

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So I need to install a security camera system. The property is rather large at around 150 ft by 100 ft and it encompasses indoor and outdoor areas that need cameras.

Looking to put in 6-10 cameras and was thinking of going wireless with the netgear Arlo Pro any recomendations. Anyone have this. What happens if the wifi goes out is the camera effectively down?
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>>1187917
Wireless is shit. Do PoE.
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>>1187917
>wireless
lol no

>>1187920
>Do PoE
this

In my experience, consumer-grade stuff is shit. Overpriced for what you get, and they lack a lot of features.

I'm running a Hikvision system here. Been happy wtih them.
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don't do any IP cameras
they're all insecure shit
watch a few presentations from shakacon, defcon, blackhat, or similar if you don't believe me

https://www.youtube.com/watch?v=B8DjTcANBx0

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What are the largest sources of waste on the planet that could actually be used to make aesthetic projects?

The two I can think of are pallets and shipping containers.
20 posts and 3 images submitted.
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plastic bottles
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>>1187840
Pallets are recycled and re used all the time

Plastic is the only obvious choice
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>>1187845

Where I live people just throw pallets in the trash if they ever end up slightly broken.

Sad desu.

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So I put in a new air conditioner in an old building I live in(built in the late 40s) ,knocked a bunch of old drywall out and fiberglass without a mask in a hurry. Whats the chance of inhaling asbestos with old drywall?, am I gonna die 20 years early because I inhaled some old dust from the 1940s?
14 posts and 3 images submitted.
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Now I'm worried about stuff behind the hole I just kicked in my place, built in 1969. Does asbestos ever look like pink fiberglass? Why bother with insulation between a condo's bedroom and living room? There's one thermostat for piped heat, and only one wall air conditioner is allowed, for external uniformity.
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>>1187586
100%
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>>1187590
From what I understand asbestos was only used around heating ducts in old wall heaters(not my pic) to a ceiling, i don't know if it's in old drywall/insulation, that's why I made this thread. The stuff that I pulled out of the wall was fiberglass/old newspaper from the 40s.

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