Archived threads in /diy/ - Do It yourself - 124. page

what exactly does a bioreactor/algaereactor do? Just cultivate algae for I'm assuming food?

>>1188913
for animals.

turn animal manure into spirulina and feed it to animals= profit.

also you can use spirulina for crops to improve nutrient uptake.

>>1188907
Super cool man. I recommend the next step you take is trying to synthesis protein powder from it. You will literally have infinite food and live longer than anyone who has ever surfed 4chan.

If it's just for a summer gig, it'd be easier to get a job with contractors. Unions can be great but you're right, it can be tough to get in. I'm thinking, if you're not looking for long term, don't bother. If you want a career, then it's worth the effort.

>>1188685
This.

Would help kissing some union ass. Thos faggots are cliquie

>>1188633
Delmarva contractor here. unions have a pretty solid presence here, nothing like up north but they have some pull. however there are plenty of non-union contractors around, big and small. Just gonna have to find a place for you. But a big job probably isn't going to hire someone for summer work only.

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environment matters

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Keep on 3D printing spinners.
BUY CHINESE BEARINGS IN BULK!
Late
https://www.youtube.com/watch?v=Gbb8kZw-xRg

>>1188434
better photo of that trash can plz

are you an immigrant from a sand country?

please don't rape the children.

>>1188180
A mattress is nice...I remember the day I finally got one, and it was a definate step up to sleeping on the floor...

>>1188180
OP, the first thing I would do is get rid of that carpet. Unless the house is absolutely brand new that carpet will be disgusting no matter how much you clean it.

Also, beds are for people with weak spirit. The floor is where its at.

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>>1187197
What have you done in robotics already? Are you familiar with ROS? Are you using some kind of specialized robotics board? Also Robots General please!

On Letsmakerobots they recommend some literature, for structured work you could look at open coursework or robot cookbook.

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>>1187197
bump for robots general

pic related, considering buying the me-arm kit to get started

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>>1187894
I totally agree with /RG/, we need a robotics general

post your stupidest robots!

Its a """robot""" I made at the UNI in 2015 using GALs, timers and just one sensor, it escapes a labyrinth with a lot of time

>>1183440
prepare to hop from state to state chasing work, and save up money now for when your body gives out on you in your mid 40s

>>1183469
My girlfriend is currently going to college still (programming, if you're curious), is there a way to stay in one place for a good amount of time?

>>1183440
For the last 100 years the oilfield has came and gone every 5 years. It'll be crazy good money and stupid busy, then die out with huge layoffs. Plan accordingly. Give it time, they keeping finding new pockets and better technology allows new ways to access older deeper ones. Just save your money.

In cali, you need a license to remove asbestos. Knowing how cali does other stuff, I would think the disposal sites would have checkpoints of sorts to verify the license.

Also, unless it's fraying, asbestos is probably a better insulator than other options. I'd just leave it, but in my area the existence of asbestos doesn't lower the value of a house.

>>1183286
Best bet is to leave it since it's such a bitch to do properly.
If you need to remove it (I did from my whole octopus furnace) put a respirator on and goggles. Then cut sections nicely and take them off the best you can without breaking a whole lot. Put them in paper bags and fold them up (plastic blasts out air when you tie them up and push the air out). Then I slowly fed them to the garbage man in amongst my other garbage.
Remember, the guys who got sick were working in ship building yards where you spray the shit on inside an unventilated hull with no mask for 8h/day for 30 years. Or the plumbers who put it on mixed the shit like concrete where you pour a bag of flour asbestos and mix it in water with no ventilation in the basement.
Seriously you will be okay health wise, just don't literally snort the shit.
As for disposal, it's a natural mineral, in the dump it's going to do no harm buried in everything else.
We've demonized a once useful product to the point where we think it is literal cancer. Just be gentle and you'll be good.
P.S. I still have asbestos mittens I use for cooking, never can burn even over an open flame :P

>>1183286
I did it as part of a removal team.
The shit is dangerous anon, but it can be done.
The key is keeping it damp, not soggy, but damp. Basic soapy water in a bug sprayer. That keeps the shit from floating everywhere. That and not letting it fall to the floor. It's the floating stuff that gets in your lungs and contaminates the rest of your house. The whole area we worked was sealed in plastic (two layers) and negative pressured (sucked air out through a HEPA filter). Every remover monkey had a full NIOSH mask and tyvec suit taped up like a fucking ductapemummy. No food, no drinks, no taking a piss till break time. Filled my boots once and I wasn't the only one.

We just double bagged the shit and sent it to the local landfill. Where they probably broke the bags by compacting them with a big fucking dozer.
But seriously, google ye "how to remove asbestos"

We got paid fairly good, but the company make a killing.

>>1189619
electrical motor can make a quiet hum, but most of the noise is in the bearings.
the motor can make noise if the bearings/bushings in the motor, or from the carbon brushes if it's not a brushless motor.
fans also can get loud if they hit a big piece of dust and chip or bend, so they're unbalanced.

Usually the best quiet design is water cooled and a very quiet external pump motor that can be heavily insulated. (which you can't really do with fans without screwing up the airflow.

Sound propogates through air. Noisy fans are usually because of turbulent air coming of the fan blades themselves. There isn't much you can do to change the shape of the blade and make it quieter.

Even the most expensive fan blades only seem to have little notches cut from the trailing edge. They are better than the cheapos but they still make noise at full tilt. Less noise also means less airflow.

Go buy better fans of you want a quieter PC

>>1189619
Simple.

Buy brushless 120mm fans and instal them with a speed controller.

Choke it down to 7-9 volts instead of 12 volts.

Better airflow and quieter.

Alternatively you can do like i did and just throw a heater core from a dodge durango ina deep freeze and hide a pump behind it in the other room. Mix 100% antifreeze 50/50 with distilled water.

Not sure if antifreeze leak would fuck my shit uo but its an older system so idgaf

I'm no expert... I thought you need breaker or some thing

Something to divert power away from fragile batteries.

I'm interested in this, too

I killed part of my car by using a 15 instead of a 10

>>1189156
I would just buy some overcharge/undercharge protection circuit and not have to worry about my batteries setting my house on fire.

What did you get the batteries off of? If you got it off a drill there should probably be a voltage control circuit in there, then again you can buy those circuits for less than whatever your tearing it out of.

>>1188855
Does it have good water? If yes then why destroy it with a fire pit?

>>1188855
Egh I wouldn't do anything that involves fire. Heating and Cooling that slab over and over is likely to result in cracking it and having to replace it or else have a gaping hole to hell in your backyard till you do. Though, it would make a snazzy sundial, or flower bed, strawberry planter.

>>1188855
make a nice fountain, you can even use the water from the well if it has water

>>1188389
Color and grain suggest black walnut.

looks like walnut which is a really nice find in a pallet

>>1188395
Agreed, walnut is an absolute pleasure to work and it will hold an edge like a knife.
It's more allergenic than most woods though, beware the dust.

>>1187703
Huh, that's kinda fucked up. Can't really offer any insights, sorry.

>>1187703
It's no longer safe to take on the road, but you can mount and oscillating dildo piston to the chain drive and make a perfectly reasonable fucking machine

>>1187703
if it were my bike i'd go ahead and repaint it, then wrap the crack in some asthetic black duct tape and then like 9 heavy duty zipties. But if youre doing anything besides just pedaling around town (trails, jumps etc.) then you can count on that shit failing eventually and no amount of tape and zipties will save you.

>>1187399
Buy a pillow with the density your looking for and take out the stuffing

>>1187399
You could always chop up a foam pillow

Walmart one is 86398cm^3 for 907g

While the slightly more expensive poly-fil is 43400cm^3 for same weight. that must mean it's more dense right?

from the thumbnail i thought this was about thread depth and was about to rudely refer you back to your copy of machinery's, but there doesn't seem to be a table for reaming.

i guess as long as some but not all of the tapered tip of the reamer goes into the hole you're good to go.

>>1187185
Machinist fag here. Yes your logic itself is sound but how much stock you want to leave for the reamer depends on what you're cutting. Unless you've got a nice machine which I'm assuming you don't because lol /diy/, .018 seems like a lot for a reamer if you're doing steel or other hard materials.

>>1187185
Simple rule of thumb is around 5% of the finished hole size, but you can go a little under or a little over as long as you have enough flute or your drill doesn't go over/wander/oval/whatever.

You should be ok with a #2 drill or #1 drill. If you don't have numbered drills, I wouldn't suggest using a letter A drill because it's risky as drills can go oversized fairly easily, so the reamer might not clean up the hole. 7/32nd should work, you should have enough cutting flute, just be sure you can evacuate the chip. If it packs up at the bottom your reamer will go oversize, or if it packs up in the gullets it'll fuck surface finish/possibly go oversize.

19/64ths should be fine on the 8mm reamer, letter M or N would also work.

you're real dumb and are going to have to sell it for the tin price

>>1186893
You'd have to ask the guy what level of assurance he needs. He might be ok with your guessimation or he may want certified tested sampling.

>>1186894
Hey, there's that kid.

>>1186895
I'm thinking that's the case, but I'd still like to know for the future. Is there a chemical test? Do I cut a small bit and drop it in something that tells me percentages?