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420chan is Getting Overhauled - Changelog/Bug Report/Request Thread (Updated April 10)

/a/ - Anime & Manga Discussion Now Available
medical grade silicone Ignore Report View Thread Reply
Dopey Wang - Fri, 27 Sep 2013 20:40:10 EST ID:IeKJOxZ+ No.5915
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not sure if this is the right section but anyone know where i can buy medical grade silicone for making adult toys?
Shitting Bunson - Fri, 27 Sep 2013 21:39:20 EST ID:23z3O8Uj No.5916 Ignore Report Reply
Dopey Wang - Sat, 28 Sep 2013 16:31:02 EST ID:IeKJOxZ+ No.5919 Ignore Report 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 Ignore Report View Thread Reply
Shitting Pablinglere - Tue, 10 Sep 2013 09:45:03 EST ID:SOVM0ZNF No.5891
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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 ID:7p59x5Kr No.5914 Ignore Report 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 ID:1/RGVUTh No.5917 Ignore Report Reply

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

Revit resources Ignore Report View Thread Reply
Edwin Gopperlock - Fri, 20 Sep 2013 16:14:26 EST ID:0fHJPk0Q No.5904
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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 Ignore Report View Thread Reply
George Drenderway - Fri, 13 Sep 2013 19:10:54 EST ID:XiGeXXo1 No.5898
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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 ID:VLmiDLgV No.5900 Ignore Report Reply
Maybe protect your head with a hoodie and some flame-retardant gel, like stuntmen use.
Wesley Clockleworth - Sun, 15 Sep 2013 03:50:30 EST ID:v8qu+fWE No.5901 Ignore Report Reply
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And use a "stage flame", a low-temperature alcohol flame that's less likely to make you into a crispy critter.

And you should use some version of this as your entrance song.

/tesla/, meet my friend /dis/ Ignore Report View Thread Reply
Nigel Beblingford - Thu, 12 Sep 2013 02:08:09 EST ID:tB60PQ7m No.5897
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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 ID:9FHP6N92 No.5906 Ignore Report 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 Ignore Report View Thread Reply
Lillian Beblingdudging - Thu, 05 Sep 2013 06:32:19 EST ID:qcML6joZ No.5880
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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 ID:+FYkgdda No.5883 Ignore Report Reply
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You make me sad, my children.

But never mind. Now, who wants a refreshing ice cold glass of black oil flavoured space jockey cola?
David Hupperwell - Fri, 06 Sep 2013 11:48:05 EST ID:WqMK7Yu4 No.5884 Ignore Report Reply
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Hamilton Seddlemudge - Sat, 07 Sep 2013 13:40:31 EST ID:iYjHoSI2 No.5885 Ignore Report Reply

How does Geophysics compare in difficulty to EE? Ignore Report View Thread Reply
Schist n giggles - Sat, 24 Aug 2013 13:30:43 EST ID:2DP31g8E No.5849
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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.
Frederick Worthingwell - Sun, 25 Aug 2013 11:33:41 EST ID:GZzfqPep No.5850 Ignore Report Reply
so effing win
Oliver Wickleson - Sat, 31 Aug 2013 13:54:46 EST ID:AW4qvvm4 No.5862 Ignore Report Reply
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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 ID:AW4qvvm4 No.5871 Ignore Report Reply
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This may not be the place for lively / conscious discussion, might try /sci/

MSU or U of M Ignore Report View Thread Reply
Rebecca Nobberbadge - Fri, 16 Aug 2013 11:43:19 EST ID:QaUuZN7s No.5839
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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 ID:j23CgD3m No.5841 Ignore Report Reply
dafuq i aint lookin this shit up for you.

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

Post Navy success Ignore Report View Thread Reply
Clara Bungerstudging - Tue, 11 Dec 2012 22:35:56 EST ID:D58N+P13 No.5205
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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.
Hamilton Fellershit - Wed, 28 Aug 2013 11:29:52 EST ID:iT11fP9F No.5857 Ignore Report Reply
Get it? NAVY
Clara Fanway - Thu, 29 Aug 2013 02:58:25 EST ID:23z3O8Uj No.5858 Ignore Report 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 ID:TubU1ztk No.5866 Ignore Report Reply
yeah but no aircraft carriers or subs :C

CU Boulder engineers Ignore Report View Thread Reply
Charles Grimwater - Sat, 17 Aug 2013 12:32:48 EST ID:M/lGRcbh No.5840
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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 ID:e5COnnh+ No.5845 Ignore Report 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 ID:51DjIEIu No.5847 Ignore Report 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 Ignore Report View Thread Reply
Edwin Sossleson - Tue, 04 Jun 2013 15:34:20 EST ID:0s/Ptk33 No.5717
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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 ID:BLTP3exq No.5788 Ignore Report 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 ID:8dHMlv2D No.5831 Ignore Report 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 ID:RJq673pV No.5834 Ignore Report 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 Ignore Report View Thread Reply
roxanne - Tue, 16 Jul 2013 03:37:33 EST ID:wCmW9S9z No.5795
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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 ID:RWCdnLk6 No.5808 Ignore Report Reply
What about a construction engineer?
Lydia Mandlestock - Mon, 05 Aug 2013 20:48:42 EST ID:KFZ9rgNf No.5826 Ignore Report 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.
Jarvis Nenningstat - Tue, 06 Aug 2013 23:18:57 EST ID:jykJwmgy No.5828 Ignore Report Reply
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>"shit just got real"

Civil Engineering Job Market Ignore Report View Thread Reply
Whitey Chingerfot - Wed, 24 Apr 2013 16:36:00 EST ID:aJcsBsIH No.5585
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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 ID:7O7aPdgX No.5633 Ignore Report 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 ID:1/2btBQ1 No.5634 Ignore Report 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 ID:/NTrWyY0 No.5809 Ignore Report 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.

bigpharma Ignore Report View Thread Reply
Eliza Turveyshaw - Tue, 11 Jun 2013 02:36:52 EST ID:jC1Gg2e5 No.5742
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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 ID:+XFainEW No.5768 Ignore Report 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 ID:mCS3dD2d No.5771 Ignore Report 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 ID:mCS3dD2d No.5772 Ignore Report Reply
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OP, read Alexander Shulgin and keep it legit

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