Archived threads in /diy/ - Do It yourself - 622. page

What caliber and what is the wall thickness? 1/2 to 5/8 should be plenty for black powder. cant speak or testify other than I assembled a BP rifle that I screwed in the breach plug loaded 150 grains of BP, 2 RLB, set a 30 second cannon fuse and ran for hell. Everything held together and have taken 3 deer and shot over 150 times with 50 grain load.

Nose through this collection for a couple of days http://s1131.photobucket.com/user/runastav/library/?sort=3&page=1

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> I am tapping some stainless steel pipe to make a rifle barrel.

Are you terminally stupid, or simply suicidal?

How utterly fucking STUPID do you have to be to use a bit of "stainless pipe"?

You wedge the prying object and rip the board away from the frame, you won't get the same looks as before if you put them back. Lemme see that heater

>>946937
>Lemme see that heater

What, you just wanna see a pic of the boiler itself?

It's about 36 years old I think.

>>946925
in a closed central heating system turning the radiator on or off shouldn't alter the pressure in the pipe significantly.
if there is a leak that is enough to audibly drip then you have a problem and should be constantly refilling the system via filling loop. you would notice a drop in the pressure gauge.

are you sure its dripping and not just the sound of the pipe heating up?

parents house makes a similar drippy noise in the kitchen ceiling when the bedroom above radiator is on. done it for 10 years, no damage no loss of pressure no visible water when we ripped up the floor.
just sounds the same.

>>946868

Any short circuit won't discharge to ground throwing the breaker to open the circuit and then you can have all kinds of electrical catastrophes.

A short circuit will continue to short. Sparks, electrocution, fire, death will be some symptoms.

>>946883
Not even remotely true, ever. But good guess. A GFCI will offer faster, more localized protection from ground faults, but with no current to ground it will trip the breaker or pop the fuse on time-current which isn't the end of the world and is still pretty safe.

>>946868
It depends on the type of service. Quite typically across the globe the neutral is grounded at your service transformer. Not at your house. That means that most of your stuff will likely work just fine. Odds and ends like TV or laptop power supplies might not work, but most loads will. If you have a fault in an appliance, there's a greater chance you will get a small shock, but your water pipe should also be grounded so that's unlikely anyway. If you were to remove the ground AND neutral, nothing will turn on because there is no circuit - just an open, energized line.

>>947388
Scratch the part about the water pipe. I had that backwards in my head as I mostly do industrial crap and not residential buildings. I think the water pipe ground has to be deprecate from the ground rod/electrical connections but I'm not sure. Anyway, having a system ground is very important for safety reasons, but not 100% hypothetically necessary for the function of most things (e.g. Just look at light bulbs or other small appliances that don't have a ground prong)

bump. Also I must add that I only want it to hover. Is this less taxing on the flight controller?

There is no rotor size limit concerning stability. The flight controller does not really care about your flying style as long as you don't crash.

>>945624
But I heard that large props have too high inertia to be controlled quickly enough.

One thing to remember is that price!=sound quality. What are some pedals that YOU like? Do you have a distortion/comp/wah in mind that you would like to clone?

The best thing you could do right now is find a schematic for a pedal that you like and try to analyze it. For example, if you find a particular distortion pedal, look at the clipping arrangements and the filtering (really all that any "dirt" effect boils down to). One "gotcha" that guitar effects will have is that the inputs are typically very high impedance; modern practice is at least 1Mohm. As a result, the inputs to guitar pedals are particularly sensitive to noise. Add in the fact that any dirt pedal will have some gain to it and circuit layout becomes important. Make sure that the input and output are not close to eachother on the circuit board and you should be ok.

Also, I have found diystompboxes to be superior to freestompboxes, but both are good sources of information. Less swearing, no flaming, few arguments. More professional in general.

>>945253
>diystompboxes
I'll definitely check that out, thank you.
I know that price doesn't make the sound, but I'd rather copy something that's well reviewed and liked, and most of those effects are honestly in the 200€ range and not down in the 30€ bargain bin. Not to generalize of course, but that was my main reason for that comment.
I don't really have the option to test out a whole bunch of pedals sadly, so I'll have to go by reviews and recommendations basically. For the compressor I'd like something that doesn't colour the sound but CAN be cranked for a nice effect if I want to, so I guess I'll have to find the suitable comp and see if the schematics are available.
Thanks for the tips with the input jacks, I'll make sure to seperate them as much as possible on the circuit and physically as well (but sharing the ground plane shouldn't be an issue I assume? I don't see why it would but maybe I'm just missing something very obvious).
More research for me, basically, but thanks for the pointers.

Sharing the ground plane shouldn't be an issue. One compressor that people seem to like is the Engineer's Thumb. It uses an OTA in the feedback loop of the opamp. This gives you greater dynamic range; OTAs are fantastic devices but they are limited in headroom and linearity. Keeping it in a feedback loop solves those issues while keeping the benefits (well defined gain control).

In regard to testing pedals, do you live near any music stores?

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Make a Smokenator for a BBQ kettle.

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>>943008
Find old cross cut saw blades, cut knife blanks out of them.

Also, general pepakura or pepakura-based creations thread.

I will eventually strengthen the R2D2's body and plan to make it into a fully functional robot.

We have a dedicated board for this stuff. It's apparently even slower than /diy/, though.
>>>/po/

>>947474
Well, Papercraft is just the skeleton, I will strengthen the paper with fiberglass, and paint it, then insert electonics in it, wheels, controllers, motors, arduino etc as well as lights and effects to make it a fully functional robot.

So I think this is more of a diy project

>>946575
A light one

>>946575
China
now turn it over and read the other side

Google Lilliput Bulbs

>>947132
open it and clean the contacts

>>947134
I did with some wet silk, then dryed it, without any change

>>947132
check continuity along the top track that starts on the left pad and goes right then down.
space bar has two contacts so its possible the track is broken between the two space bar buttons and you just don't notice the left hand space bar button is broken because the right one works

>>946572
Pic related: First lap job I've done, how does it look?

Weigh each con rod/piston combo and file minute amounts off each heavier con rod until they weigh the same. Perhaps take the crank in and get it balanced. Plenty of info out there on blueprinting engines.

Port and polish, although it's easier if you take plays and while the engine is running and let it get sucked in the the air intake

dont use glue? use an oil

>>946007
Putting epoxy on the cork is likely keeping it from also forming a complete seal.

Why not dip the top in a high temperature sealing wax and see how that works?

>>946018
This. Mix a ton of glitter into an oil that won't go rancid like baby or mineral oil. Seal shut with cork tightly.

stop being a nigger and google ''illuminated pots''

>>945919
no need to be rude dear

Im interested as well..

I have worked with electronics in various places and application, and i have never encountered pots which were illuminated.

I have meet pot that had a knob attached which was illuminated though..

What is this bearing for exactly?

its basically the hub bearing. what lets the wheel rotate freely. we are CNC'ing our own everything and need to determine tolerances for our purchased bearing

How did you manage getting into this Team in the first place

nice idea but to be honest, i'd think "fuck this shit, spend five more bucks and get a fresh can of paint."

The thing is, everything what isn't a everyday product needs to be perfect. If i needed a bucket o'paint everyday, i guess i would visit you. But because i just use it once a decade i buy good stuff from the market.

>>945500
Considering we have a paint recycling place out here that gives the paint away for free... I'd pay nothing.

>>945500
If I want basic paint I can get it for $22/gal, if I want high end I can get it for $45/gal. And I usually want several gallons of identical paint. I wouldn't mind using recycled paint, but if I need 3 gallons of a color and you only have one there's nothing I can do. If I only need a small amount I can get a quart for $10, and that'd be a hard price to beat if you want to make it worth your while. In my jurisdiction you're not allowed to put paint in the trash if it's wet. You can leave the can open so it dries and throw it out, but that makes in unusable, obviously. If you're location is the same, you'd have to head it off before it gets thrown out. Yes, I realize people still throw it out wet, but anyone that knows just lets it dry because it's no effort to eliminate any chance of a legal issue.

>>945214
look up light activated resin...basically, it's kinda like an epoxy resin that only hardens upon exposure to UV

Buy a real plastic welder.

>>945214
weak fragile plastic doesnt adhere well to a lot of surfaces you get what you pay for.