Leave these fields empty (spam trap):
You can leave this blank to post anonymously, or you can create a Tripcode by using the format Name#Password
[i]Italic Text[/i]
[b]Bold Text[/b]
[spoiler]Spoiler Text[/spoiler]
>Highlight/Quote Text
[pre]Preformatted & Monospace Text[/pre]
[super]Superset Text[/super]
[sub]Subset Text[/sub]
1. Numbered lists become ordered lists
* Bulleted lists become unordered lists


medical grade silicone

View Thread Reply
- Fri, 27 Sep 2013 20:40:10 EST IeKJOxZ+ No.5915
File: 1380328810504.jpg -(21170B / 20.67KB, 320x277) Thumbnail displayed, click image for full size. medical grade silicone
not sure if this is the right section but anyone know where i can buy medical grade silicone for making adult toys?
Dopey Wang - Sat, 28 Sep 2013 16:31:02 EST IeKJOxZ+ No.5919 Reply
>>5916 I dont need it for the mold, i need it for the finished product so it has to be body safe. I've already ran quite a few google searched and emailed a few site (but obviously they wont give out that info)

2 stroke chainsaw

View Thread Reply
- Tue, 10 Sep 2013 09:45:03 EST SOVM0ZNF No.5891
File: 1378820703986.jpg -(35765B / 34.93KB, 500x364) Thumbnail displayed, click image for full size. 2 stroke chainsaw
Hey guys

I'm currently in first year and for a chemistry based unit we have to figure out what
material 9 components are made from. Most metalic, some polymer.

Anyway i'm not entirely sure when it comes to moter mechanics, and was wondering what some of the components will experience, in-terms of stress, heat subjection, and basically any condition that would applied during use.

Things like the cylinder head, the crank sump case, the crankshaft, the piston and the muffler.

The polymer components, i'm assuming, won't come under much change in temperature but conditions more like stress.

TL;DR - What parts of a 2 stroke engine for a chainsaw would experience high temperature? What defines the properties of the materials used?
Whitey Pullykire - Fri, 27 Sep 2013 14:19:20 EST 7p59x5Kr No.5914 Reply
What parts of a 2 stroke engine would experience high temperature?

Spark plug, cylinder head, cylinder walls, piston head, exhaust port, exhaust pipe,reed valve, head gasket exhaust pipe gasket.

>components will experience, in-terms of stress,
shit will get red hot and experience extreme vibration of varied frequency including acoustic vibration and ultrasonic vibration. frictional stress, strain(elastic stress) and compaction. The part we're talking about depends on what stress it receives.
Thomas Cindershaw - Fri, 27 Sep 2013 22:12:42 EST 1/RGVUTh No.5917 Reply

You forgot the chain + blades. those get hella hot, so i'd imagine would the teeth on the stationary blade

Revit resources

View Thread Reply
- Fri, 20 Sep 2013 16:14:26 EST 0fHJPk0Q No.5904
File: 1379708066032.jpg -(302642B / 295.55KB, 1050x825) Thumbnail displayed, click image for full size. Revit resources
I took a revit class a bit ago but I don't feel so fresh, having gotten used to several software since then.

Is there a great guide I can touch up on? I've already checked the first few pages of varied youtube searches, under the "long" category.

Fire and shit

View Thread Reply
- Fri, 13 Sep 2013 19:10:54 EST XiGeXXo1 No.5898
File: 1379113854699.jpg -(16014B / 15.64KB, 214x300) Thumbnail displayed, click image for full size. Fire and shit
I wasn't sure where to post this, but I figured you guys would be most suitable. I'm a pro wrestler and to make my appearance more interesting I'd like to wear a flamming jacket during my entrance. Something like pic related.

I'm no engineer (philosophy student pls), which is why I seek your advice to build such a thing. What I would need would be some sort of trigger that activates the fire on the back, be it on the wrists or even on the chest, and the fire would need to extinguish after ten seconds or so. Again, forgive my ignorance, but I imagine the jacket would need to be constructed in 3 layers, the first a protective material to prevent burning and pain, the second an absorbent material which could be dosed with a highly flammable liquid and the third would be a metal that wouldn't conduct heat yet would allow the fire to seep through, maybe in the form of chain-mail. It may be safer to just have the arms light on fire. I was thinking maybe just altering the arms on a greatcoat but with the same premise as above.

Any advice would be a great help.
Ian Desslehire - Sat, 14 Sep 2013 11:45:06 EST VLmiDLgV No.5900 Reply
Maybe protect your head with a hoodie and some flame-retardant gel, like stuntmen use.

/tesla/, meet my friend /dis/

View Thread Reply
- Thu, 12 Sep 2013 02:08:09 EST tB60PQ7m No.5897
File: 1378966089236.png -(73597B / 71.87KB, 750x600) Thumbnail displayed, click image for full size. /tesla/, meet my friend /dis/
ITT: general manufacturing.

So, I was watching some youtube vids on what to do with my new MOT when I hear that high voltage ionizes 'oxygen and nitrogen into ozone and nitric oxide gases'. Chemistry is not my strong suit, so I started thinking that I found an easy way to create N2O. A few internets later, I found that this wasn't the case... but I did find something else.

>Ozone does not react with ammonium salts, but it oxidizes ammonia to ammonium nitrate:
> 2 NH3 + 4 O 3 → NH4NO3 + 4 O2 + H2O

>Nitrous oxide is most commonly prepared by careful heating of ammonium nitrate, which decomposes into nitrous oxide and water vapour.
> NH4NO3 (s) → 2 H2O (g) + N2O (g)

Therefore, Windex -> voltage -> laughing gas. Q.E.D.

/tesla/ chemists: is this a real thing? Moreso, is this ChemE territory safe enough for an EE?
Thomas Claystock - Mon, 23 Sep 2013 17:02:28 EST 9FHP6N92 No.5906 Reply
1) windex isn't ammonia, or at best is 5% ammonia
2) you would have to create the ozone, then pipe it through the ammonia
3) then you have to purify and carefully heat the ammonium nitrate

All in all, a lot safer, cheaper, and better to just buy your own N2O

Engineer board

View Thread Reply
- Thu, 05 Sep 2013 06:32:19 EST qcML6joZ No.5880
File: 1378377139066.jpg -(181269B / 177.02KB, 1131x470) Thumbnail displayed, click image for full size. Engineer board
You have done well, my children.
We created you, that one day, there would be a board for Engineers.

Wait, why is that cat pushing a watermelon out of a lake?
1 posts omitted. Click View Thread to read.
Eugene Fammlespear - Fri, 06 Sep 2013 10:13:22 EST +FYkgdda No.5883 Reply
1378476802351.png -(391562B / 382.38KB, 1024x576) Thumbnail displayed, click image for full size.
You make me sad, my children.

But never mind. Now, who wants a refreshing ice cold glass of black oil flavoured space jockey cola?

How does Geophysics compare in difficulty to EE?

View Thread Reply
- Sat, 24 Aug 2013 13:30:43 EST 2DP31g8E No.5849
File: 1377365443430.jpg -(106505B / 104.01KB, 640x489) Thumbnail displayed, click image for full size. How does Geophysics compare in difficulty to EE?
I have heard from multiple sources that it is superior difficulty, not that this is the only goal in life. It's just nice to know how much smarter I am.
Oliver Wickleson - Sat, 31 Aug 2013 13:54:46 EST AW4qvvm4 No.5862 Reply
1377971686266.jpg -(111717B / 109.10KB, 700x689) Thumbnail displayed, click image for full size.

I have heard it contains all the math, more physics, and more fun as it relates back to the earth. Not certain about the jobs market, but you are trained as a scientist, debatable if there are engineering-like qualities
Painsley Whetherwurth - Mon, 02 Sep 2013 13:59:40 EST AW4qvvm4 No.5871 Reply
1378144780154.jpg -(18217B / 17.79KB, 365x313) Thumbnail displayed, click image for full size.

This may not be the place for lively / conscious discussion, might try /sci/

MSU or U of M

View Thread Reply
- Fri, 16 Aug 2013 11:43:19 EST QaUuZN7s No.5839
File: 1376667799957.jpg -(5464B / 5.34KB, 225x225) Thumbnail displayed, click image for full size. MSU or U of M
Which university is better for engineering Michigan State or University of Michigan? I have heard that UM is better in most aspects but I also heard tha MS has a very good engineering program.
Albert Winnerbury - Sat, 17 Aug 2013 16:21:17 EST j23CgD3m No.5841 Reply
dafuq i aint lookin this shit up for you.

Ernest Hunnerstone - Fri, 30 Aug 2013 20:44:32 EST +rn9B2zr No.5861 Reply
U of M, no contest.

Post Navy success

View Thread Reply
- Tue, 11 Dec 2012 22:35:56 EST D58N+P13 No.5205
File: 1355283356835.jpg -(46450B / 45.36KB, 500x485) Thumbnail displayed, click image for full size. Post Navy success
rom browsing around I've noticed a good portion of 420chan, and specifically /tesla/, has a good portion of ex-Navy nukes. What route in education did you take after getting out? Any tips for a enlisted guy before he finishes his contract? Any quals? I'm applying to Berkeley's engineering school for mech engineering/mat science next year and would like to whittle down my options.
7 posts and 2 images omitted. Click View Thread to read.
Clara Fanway - Thu, 29 Aug 2013 02:58:25 EST 23z3O8Uj No.5858 Reply
No the US is a shit hole.

However if you move to Canada...

they don't drug test you
Hamilton Niggerforth - Sun, 01 Sep 2013 12:38:08 EST TubU1ztk No.5866 Reply
yeah but no aircraft carriers or subs :C

CU Boulder engineers

View Thread Reply
- Sat, 17 Aug 2013 12:32:48 EST M/lGRcbh No.5840
File: 1376757168988.jpg -(1821307B / 1.74MB, 3264x2448) Thumbnail displayed, click image for full size. CU Boulder engineers
Gonna be an upcoming freshman at boulder and I'm moving in on the 20th. Anyone go CU that does engineering tell what its like? Its a toss up between aerospace engineering or chemical and biological engineering.
Thomas Popperworth - Wed, 21 Aug 2013 01:14:10 EST e5COnnh+ No.5845 Reply
Engineering is a very hard major. You better be ready to be going to study groups and asking out of class for help. Especially aerospace, chemical and petroleme engineering
Jarvis Fablingstone - Fri, 23 Aug 2013 14:05:36 EST 51DjIEIu No.5847 Reply

Don't listen to this guy. Not everyone benefits from study groups. If you're one of the smartest people in the group, you'll probably do better studying on your own as the group will slow you down. Oh, and some study groups are only LOLOLOL LET'S BITCH ABOUT HAVING TO STUDY FOR 3 HOURS! We have cell phones now so group studies are kind of obsolete when you can text/call your homie and ask him/her a question on the fly. If they haven't gotten there yet, they'll let you know what's up when they get there.

Commercial Construction

View Thread Reply
- Tue, 04 Jun 2013 15:34:20 EST 0s/Ptk33 No.5717
File: 1370374460524.jpg -(20772B / 20.29KB, 232x300) Thumbnail displayed, click image for full size. Commercial Construction
I'm planning to build my own house one day, and I am most certainly not going to go the way of wood framing. I'm planning on either using concrete block or having poured concrete walls, and a metal roof, similar to how a small store or shopping strip is built. I would very much like to learn how these buildings are constructed. I have this book in the picture, and it is a very helpful resource for understanding the systems present in a wood frame house. If I could just find it's steel and concete counterpart...

Can anybody point me towards some good resources on this subject?
15 posts and 2 images omitted. Click View Thread to read.
Charles Duckstone - Sat, 06 Jul 2013 05:52:04 EST BLTP3exq No.5788 Reply

What? Brick houses are only as warm if you put cavity-wall insulation in them, and seeing as most brick houses don't have cavity walls, this puts them at a disadvantage. You can always put in triple glazing and roof insulation of course.
Zoraster - Sat, 10 Aug 2013 02:26:42 EST 8dHMlv2D No.5831 Reply
OP, look into strawbale, seriously.
local materials, easy to build, hard to burn, and you seal it with cement anyways.
check it out.
Emma Sumblesedge - Sun, 11 Aug 2013 00:46:21 EST RJq673pV No.5834 Reply
There's been some interesting stuff done with repurposed tyres, and pvc and glass bottles.
And mudbricks and geodesic domes are still cool.

engineering and shit

View Thread Reply
- Tue, 16 Jul 2013 03:37:33 EST wCmW9S9z No.5795
File: 1373960253144.jpg -(71509B / 69.83KB, 435x587) Thumbnail displayed, click image for full size. engineering and shit
considering changing my major to electrical engineering over civil because ill probably want a job after school.

how much harder is ee over civil?
3 posts omitted. Click View Thread to read.
Nigger Govinggold - Sat, 20 Jul 2013 23:37:55 EST RWCdnLk6 No.5808 Reply
What about a construction engineer?
Lydia Mandlestock - Mon, 05 Aug 2013 20:48:42 EST KFZ9rgNf No.5826 Reply
EE has different math, but neither is 'harder' than the other.

EE has inverse fourier transform "shit just got real"

civil has calculating the moments around a stiff member to design your erection. penis.

Civil Engineering Job Market

View Thread Reply
- Wed, 24 Apr 2013 16:36:00 EST aJcsBsIH No.5585
File: 1366835760482.jpg -(28248B / 27.59KB, 700x560) Thumbnail displayed, click image for full size. Civil Engineering Job Market
To any civil engineers here. Is the civil engineering job market bad still? From my perspective it seems it isn't good, even after the upturn in the economy. I've been applying and applying and applying. I got my bachelor's in 2009 when everything was shit. After a year of nothing I decided to get my master's to put give myself something extra and to add depth to my understanding of structural and geotechnical.

I got my masters in 2012 and I'm still applying for jobs and nothing. I need money, badly. I apply not only to engineering jobs but also menial jobs (clerical, administrative, data entry, fast food, etc. etc.) and nothing. I've only gotten 4 interviews the past year and none panned out. Nobody will tell me why I wasn't a good candidate for the position I applied for except one person. It seems I put myself in a shit situation by trying to make myself more valuable. I can't seem to get menial jobs because I'm over qualified or they think I'm going to leave them right away because I'll get something better so why waste time on me (which is shit because I would be working with them for a long time because nobody will give me a job!) I can't get engineering jobs that I want because I don't have 10 years experience for an entry level position and usually those positions have dozens if not hundred's of applicants. I love math/science and applying them. I'm absolutely ethical and want to apply myself to something. I'm teaching myself programming and more autocad through online tutorials to try not to feel useless. I'm getting close to giving up and getting quite depressed.
7 posts omitted. Click View Thread to read.
Rebecca Blebberwill - Fri, 10 May 2013 19:06:58 EST 7O7aPdgX No.5633 Reply
Look for Job prospects that best suit your degree in your area? Idk what to te you dude. Salaries usually can be negotiate to a certain degree and remember that not everything is for everybody
Fuck Hugglespear - Fri, 10 May 2013 19:35:14 EST 1/2btBQ1 No.5634 Reply
>>Salaries usually can be negotiate to a certain degree

not if this is your first engineering job out of college. Better take what you can fucking get.
Matilda Cezzlewuck - Mon, 22 Jul 2013 03:53:37 EST /NTrWyY0 No.5809 Reply

This is useful information.

My co-worker had 3 degrees, bachelors in marketing, bachelors in human resources and a masters in some environmental shit and she told me she had to take her degrees off her resume in order not seem like someone who is just going to leave.


View Thread Reply
- Tue, 11 Jun 2013 02:36:52 EST jC1Gg2e5 No.5742
File: 1370932612020.jpg -(213574B / 208.57KB, 1009x424) Thumbnail displayed, click image for full size. bigpharma
Eng I am so pissed off

I'm a first year engr student, and I'm not the best when I get into an exam room (study hard, but usually dont do amazing)

I am a devoted hobby chemist and I exceed at recreational substance manufacture. Sourcing restricted chemicals, getting in equipment and etc. MDMA,MDA,amphet,methamphet,GHB,alkyl nitrites.

If it's interesting I'm working towards it.

What annoys me is that I can never use this on a CV

I want to do chemgineering and work in pharmaceuticals.

Do pharma companies look for chemgineers in this area of interest?

Or will they just give me the look that 95% of society would
8 posts and 1 images omitted. Click View Thread to read.
Ernest Tillinghood - Fri, 28 Jun 2013 02:09:05 EST +XFainEW No.5768 Reply
>no mention of the literal industrial byproduct estrogen mimicking chemicals present in all plastic food containers and soy products
John Blenderson - Fri, 28 Jun 2013 18:42:21 EST mCS3dD2d No.5771 Reply
OP, drugs are cool, but if you come here seeking approval then you're going to be in federal prison before you find the steady job that will let you settle down.
John Blenderson - Fri, 28 Jun 2013 18:44:59 EST mCS3dD2d No.5772 Reply
1372459499683.jpg -(34395B / 33.59KB, 500x500) Thumbnail displayed, click image for full size.
OP, read Alexander Shulgin and keep it legit

Report Post
Please be descriptive with report notes,
this helps staff resolve issues quicker.