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File: Legit?.jpg (57 KB, 1000x1000) Image search: [iqdb] [SauceNao] [Google]
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I'm a welder, professionally, and I get stainless scrap from work for various projects at home. The problem is that I don't have a drill press suitable for 300-series stainless. I'd like to be able to make at least 1/2" holes without undue fuss or gnashing of teeth.

I know about what to look for (I use industrial presses at work), but I don't know exactly how that translates to a consumer benchtop machine. Pic related (http://www.grizzly.com/products/12-Speed-Heavy-Duty-Bench-Top-Drill-Press/G7943) looks pretty good, but how does it or similar models actually perform in the real world? Comments on brands, models, or nice features to look for would be appreciated.

Since this is for personal projects that I expect to make little if any money from, a more expensive machine will have to be justified by greater capability, not just greater productivity. That said, I can afford more than the Grizzly pictured if I have reason to.

Will answer welding-related questions in the meantime.
24 replies and 5 images submitted. Click here to view.
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>>933033
isn't slower better for stainless due to work hardening?

i'd take the maximum diameter hole you want and see the max rpm you would need
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>>933033
If the scraps are small enough, and you can scrounge the materials for it, have you considered welding yourself up a punch press of sorts? If the stainless is thin enough you might even be able to use a sledge hammer to drive the punch. Like a coin blanking machine. Crude, questionable,, but cheap!
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>>933079
How would I figure that out?

>>933117
Welding a punch press? I have no idea how to do that...

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I watched pretty much every video in this playlist.

https://m.youtube.com/playlist?list=PLQX9MsRl-1XtBy14K8GoWHQP0KDLDQWQA

It got me thinking about machining.

What are the equipment that he uses called? There's a metal lathe, then there's a turntable of some type.

What are common machines found in machine shops called?

How hard are they to make? How long do they last?

I was thinking that using a lathe to make another lathe would be pretty cool.

If I ever decide to start machining, would it be possible to buy one or two machines and use those to make any other machines I'd need?

Would it be possible to turn a profit creating metal machining equipment to cover the cost of the equipment itself?
46 replies and 2 images submitted. Click here to view.
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>>932987
>What are common machines found in machine shops called?
common machine tools in modern machine shops are mills, lathes, and grinders.

>How hard are they to make? How long do they last?
9/10 difficulty, durability depends on how well its made

>I was thinking that using a lathe to make another lathe would be pretty cool.
good luck with that

>If I ever decide to start machining,...
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>>932987
>What are the equipment that he uses called? There's a metal lathe, then there's a turntable of some type.
There is 40 videos in that playlist. I aint watching 40 videos for you, Nigerian.
Link to the one video with the turntable if you want to know what it is.

>If I ever decide to start machining, would it be possible to buy one or two machines and use those to make any other machines I'd need?
>Would it be possible to turn a profit creating metal machining equipment to cover the cost of the equipment itself?
Generally, the precision you can get from a machine is always less than that it was built to.

Also to make normal metalworking machines, you need BIG iron castings (not easy to make at home) that have the way surfaces induction-hardened (to prevent them from wearing out and becoming inaccurate really really fast).

The Gingery books are fascinating, but it's a lot of work and (for most of us) considerable expense and the end result is a really crude, really shitty machine.
Overall, even the little China machines would work way better than a carefully-built Gingery lathe or mill.
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>>933014

It's in this video.

http://youtu.be/w8SXEwN682Y

He actually said it's a rotary table in the first sentance lol

So... there's no way I can make a quality machine with another machine?

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Hey /diy/, I've got a caseless 5 inch CRT. Do I need to worry about the tube itself building up a dangerous charge, or is the flyback the only dangerous part?

pic isn't mine
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Neither.... i have dismantled tons of crt and nevur got a shocks
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>>932046
No, right, but what I want to do is use it.

I know I have to protect the flyback transformer to avoid death/housefires. But what about the rest?
>>
Whatever charge there is/was in the tube, it came when the thing was powered up last time. Short the graphite coating to the anode contact if you're worried.

Let's talk home security dudezors.

Wireless cameras are now cheap as fuck right?

How much do home security kits cost now adays?

I feel like it would be pretty easy to set one up yourself now adays. What would you say in combination with cameras, door/window sensors, and motion activated flow lights would be the most effective way to secure your home.

In before doggy dog (yes they are good, but they poop and need attention).

I also hear putting a baby monitor at the foot of the stairs is a smart idea because you'll hear a fly fart...
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2 replies and 1 images submitted. Click here to view.
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>>934636
A 9 inch ar15, a shotgun of your choice, or a 9mm glock, doesn't matter which. Personally, I only have a glock 42 as of yet, but I can't think of a better combination of security then door sensors, motion lights and a gun.

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I've glued two pieces of veneer together, sanded them and drilled them. I need to put a slight bend in the wood so that they can sit nice on a hat.

Please advise.
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Typically bends are added via steaming or soaking the wood and letting it dry in a jig. Since you've already glued, I'm not sure anon.
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>>932682
There's a new yankee workshop about this.

http://newyankeeworkshop.net/getproduct.php?910
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>>932693
Why does every anon on hear suggest steam bending.

Just build layers up over a form.
https://www.youtube.com/watch?v=TXAeLwJ8fcw

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Is there anywhere you can easily buy bare mosfet dies? Most of the manufacturers list them but actually finding anywhere that stocks them is difficult.

What do you do when you need a small quantity to make a prototype?
3 replies and 1 images submitted. Click here to view.
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How would you do the bonding if you get the dies?
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Just go to the manufacturers website and ask for samples. Easy.

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Wtf is this
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something made in the 25th week of 1979
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>>934353

perhaps just DIP switches with LEDs attached in series
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>>934353
I'm thinking some way to enter a 4 digit binary number with indicators to show you what number you have and an enter/reset switch?

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/DIY/,
So I'm in the process of writing a script for my first build on a DIY youtube channel. Will be alot of easier builds until I get a feel for how to do this. Anything you guys like and dislike with youtube build videos? Any general advice for writing tutorials?
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There's nothing worse than bad camerawork and audio. What kind of builds will you be doing?
>>
make sure you skip the most crucial step. that's always fun.
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>>934296
My camera is 1080p 60 fps. Just built two sets of LED panels for lighting (I have Several work lights that I used to use for film but the heat will be an issue for some of the things i'm interested in doing). Decent Microphone, for doing audio ontop, but its been a while Since I've used to for this sort of application so will need to test.

I'm looking at starting with simpler electronics builds and extraction chemistry, explaining how these things actually work instead of "Look at the circuit"...
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Where can I find one of these that's not the internet/Homebrew store?

I thought maybe Home Depot would have some lying around, but was mistaken. I don't want to pay the 20$ shipping and am switching to my second fermentation in a week.

Pleaes help.
17 replies and 3 images submitted. Click here to view.
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>>932802
off the back of a Poland Springs truck.
>>
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>>932802
just use some old carloss rossi jugs, that is what i use along with a 10 brew starter kit from target
>>
You MIGHT find 3-5 gallon glass jugs at an antique or home decor store, apparently some get sold as vases.
But realistically the only other option besides going through a homebrew store is using a plastic water bottle. Try finding a local homebrew supply or craigslist if you don't wanna pay shipping.

File: arc-length-faults-large.jpg (338 KB, 1000x793) Image search: [iqdb] [SauceNao] [Google]
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Hi guys

With geology in the shifter I need to be coming up with a Plan B. Where should I start with welding if I want to get into a shipyard?

My CC offers as evening courses
Mig
Oxy acetalene
Tig
EN certified manual metal arc

Just need to catch the recruiters eye with a course
55 replies and 8 images submitted. Click here to view.
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>>926965
Doing what in a shipyard? I've worked on board, and if it's just doing basic work in a drydock arc welding is common, but oxyacetalene is used for bigger jobs and fabricating stuff.

I should note I wasn't involved with it personally, that's just what I've gathered from the crew and engineers doing stuff.
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>>926965
As an apprentice boilermaker, I'll tell you what u done to get here.

When i was still im high school, I worked for free for periods of time, it's called work experience. This allows the employer to assess you and somewhat train you. Do what they say and what they tell you to do.

I'm guessing you're out of school now so your best bet would be to go to TAFE (Trade school or equivalent) and get the certificates in welding, be a sponge and learn everything your instructor teaches you.
>>
I'm a ex welder now I'm a welding inspector / welding engineer go to your local collage get qualified and coded and then you will be sorted depending were yyour from get into refinery and power station work

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How would I go about making a Frank the Bunny mask? The replicas are like $100 and I just want to make one.
8 replies and 3 images submitted. Click here to view.
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>>933392
You arent going to make a respectable one for cheaper than 100$
>>
dude.... google what you posted.

>How would I go about making a Frank the Bunny mask

http://www.instructables.com/id/Make-a-Frank-Costume-from-Donnie-Darko/

https://www.youtube.com/watch?v=in75emulP1g
>>
>>933392
Why do you want to wear that stupid rabbit suit?

File: HDPE_Bottles.jpg (128 KB, 1280x960) Image search: [iqdb] [SauceNao] [Google]
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I recently found out you can melt down HDPE plastics easily and without creating harmful fumes if done right. I was planning on making a mallet, a cutting board, handles for tools of mine, and some boxes. What else should I build? HDPE is used in a lot of everyday bottles and containers so getting the plastic isn't too hard and pretty much free.
5 replies and 1 images submitted. Click here to view.
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It's not that easy, actually.

You also need to compress it to make anything hard.
>>
I bought a small electric oven at a thrift shop and that works well for the melting.

Helpful tip: buy a junky blender to crush the bits into really fine bits, if you cut the plastic into chips they don't melt together like you want.

And do it outside unless you have a really well ventilated work shop, it will smell regardless when it melts
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>>934335
Incorrect.

>>934381
This is good advice.

Also:
http://atomicshrimp.com/?q=hdpe

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Anyone have a guide on how to quickly construct a practical hat out of grass/leaves?

Im not a weeb, it doesn't have to look asian, the easier it is to make, and the greater functionality, the better.

i suddenly realized that being able to produce disposable hats in the outdoors from local natural resources would be a handy skill, and id like to learn how.
8 replies and 4 images submitted. Click here to view.
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>i suddenly realized that being able to produce disposable hats in the outdoors from local natural resources would be a handy skill, and id like to learn how

Fuck off to /k/ prepper.
>>
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>>934280
>never browse /k/
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>>934280
>/k/ prepper.
Anti-establishment paranoia getting to you and making you feel vulnerable and edgy.
How does this make a prepper: >produce disposable hats in the outdoors from local natural resources would be a handy skill, and id like to learn how.
Traditional Hawaiian bowl weaving is still performed today, maybe searching along those lines might get you closer. I imagine it's better to have thick robust type grass so it'll last longer. Careful it'll cut you. The...
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Anyham's want to discuss homebrew or hamradio general on IRLP?
7 replies and 1 images submitted. Click here to view.
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>>932950
When I was a kid I got interested in it, and it was one of the few interests of mine that my father encouraged, but as soon as my brain-damaged paranoid mother discovered I'd be communicating with complete strangers over the radio, she freaked out and thought I'd tell them where we lived, and someone would come and murder us all. Not making this shit up. No CB radio either, for the same reasons. Just as well there was no internet back then, either, or I would have been in the only house in my town without it,...
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>>932950
I am studying for tech exam.

Reading the 2010 manual. Anyone know of any good supplimentary videos or books I should look at?
>>
>>933235
If you have an Android, get the app "Ham Test Prep". It's free and has the entire question pool for every level.

There are also a few other good ham and SWLing apps for Android out there if you bother to look around.

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The drywall seam has formed a hairline crack and has been fixed 4 or 5 times now. It is right at a large opening on a load bearing wall. I laid some plywood in the attic to prevent the joists from moving in case they were and installed metal bracketing before I added blown in insulation, and the wall is directly over the steel beam in the basement. It's a ~6 foot span with a double 2x8 and plywood header, with about 3 studs on each end (Jack/King). I don't know what to do anymore other than tear it all open again, or to just laminate the whole wall with another layer...
Comment too long. Click here to view the full text.
7 replies and 1 images submitted. Click here to view.
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>>934201
>another layer of drywall
>>
If it keeps forming you really should investigate why rather than patching it up and ignoring it. There's obviously an underlying problem.

Are your exterior walls brick? Does that exterior wall show any signs of subsidence or cracking?
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>>934205
It's an interior wall. The basement beam is fine. My only idea of what might be happening as that that one corner wasn't secured properly to the king studs, and it might be moving ever so slightly, enough to cause the crack to form since the seam is right near it.

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