so waht ya doin today?

[smokeywolf]

Keith, I very much admire your determination to be as organized as possible and practical. I've worked for many bosses who failed to allow any expenditure of time or money toward being or getting organized. As a result, much time is wasted chasing down setup tooling, fixtures and cutting tools.

Brad, copper is certainly gummy. Machining it is okay as long as you keep it from getting hot. Tapping is best done with an express tap. I've made a few copper water blocks which I've used in liquid cooling my hot-rodded computers.

 

[Pistolero]

I suspect that the huge variation in the hardness of copper alloys will cause large variations in
the machining properties. Copper alloys do not heat treat to harden, they only work harden...like
our familiar brass. So, if you get a reasonably hard version of copper, I suspect it machines nicely,
but the same exact alloy in a fully annealed state seems likely to be gummy.

I have to agree with Bret on the CBD, IMO anything associated with marijuana is not something that I
want to be associated in any way, shape or form. I will not further comment on the topic, this might be getting
too much like politics.

Bill

 

[KeithB]

C182 is a Chromium (0.6-1.2%) copper alloy with a trace of lead and iron. The strength is right up there with carbon and low alloy steels (65,000 to 87,000 psi). It can be work and thermally hardened. Probably not nearly as gummy as 100% copper.

 

[Brad]

My understanding, and I am hardly an expert, on CBD is that it is one of the active agents in pot. Good thing is that it doesn’t seem to give any real “high” like THC yet gives some potential benefits.
I would like to see some good research on CBD as I have my doubts on some of the benefits. I don’t like “I used it and it helped so it must be good” type of “research”. Give me a good double blind study any day.

 

[Brad]

C182 is a Chromium (0.6-1.2%) copper alloy with a trace of lead and iron. The strength is right up there with carbon and low alloy steels (65,000 to 87,000 psi). It can be work and thermally hardened. Probably not nearly as gummy as 100% copper.

Always amazes me how even a tiny bit of something else makes such a huge difference in how a metal behaves. I would far prepare to work with 7075 over 6061 bit price is a factor.
I will say that I am using more and more 1144. Once I listened to Keith and tried it I really noticed the difference. When drilling on the lathe I get little 6 and C shaped chips, not long stringy stuff. It just machines so nice and the price is right. Thank you for that Keith.

 

[Pistolero]

Interesting alloy, Keith. Never have studied copper alloys a lot. We used some berylium copper at
work for certain parts, super good springs and very strong/hard. But, the berylium turned out to be
a real nightmare from a safety standpoint and there are three or four machining centers in some
landfill somewhere because of it. I had one friend who got some serious lung effects from is,
and had a medical retirement. So, unlikely to see berylium copper alloys much, no matter how good
they are.

I need to start using some 1144, too. I really liked working with it on the sizer die.

Bill

 

[KeithB]

I just posted a thread in the machining section with a youtube video on this.

 

[smokeywolf]

Only other copper I've had some experience with was Beryllium copper. Works quite well for bushings and springs; leaf springs in my case. Down side to Beryllium copper is, fumes and airborne particulate are carcinogens.

 

[JonB]

If I may, I'd like to comment a bit on the Legality of Hemp Oil (AKA: CBD oil).
First I'd like to say, I appreciate all the opinions that were shared and I clearly understand.

Industrial Hemp and Marijuana, each have over 100 different cannabinoid compounds, One of them is Cannabidiol (CBD).
I've done a ton of reading on CBD after it seemed to work for me.
I know that Marijuana (THC) is Federally classified as a Schedule I drug, making it illegal, even if some states have legalized it.
The 2018 Federal Farm Bill legalized Industrial Hemp Extract (another name for CBD), but must NOT contain more than .03% THC to be legal to use, possess, transport, or ship in all 50 states.

Until 2015, Industrial Hemp was illegal to grow in Minnesota. In 2015 MN passed a law to make it a crop that farmers can legally grow. There are some regulations and testing required to grow it, but it is not very restrictive. It uses are actively being studied by the U of M and they are also working on developing a market for the plant extract, seeds, seed oil, and the fiber. It should also be stated, that depending on how Industrial Hemp is processed into Extract, there can be all the cannabinoid compounds from the plant, or if it's decarbed, some of those compounds can change and may be less or more effective.

There is a organic hemp farmer in our brethren of bullet casters. He is the one who turned me onto this. Each batch of his oil has been tested per State law and he includes that info with each container of his product. I have used his products as well as some from a couple other sources, as a cross-over test. I also abstained from all CBD for 4 weeks starting in late December for another test, at the request of my family Doctor, because of a scheduled colonoscopy.

Some testing/data collection is being done.
Minnesota has legalized medical Marijuana oil, a couple years ago. The Law is very restrictive, the most restrictive legalization in any state. They are continually researching the Effects of THC as well as CBD. The two companies that are licensed to grow and are producing the Medical Marijuana oils (that is all that Minnesota legalized) are continuing to collect data from patients to test different oils ...some with high THC and low CBD, some with low THC and High CBD, and some with no THC (less than .03%) and varying amounts of CBD. Anyway, there is Data that shows CBD has anti inflammatory properties, so it is likely to reduce pain caused by inflammation. BUT...do I have links to double blind studies? No I don't.

 

[Pistolero]

The problem we had with beryllium was that it caused a sensitization in the lungs and a serious
irritation. A friend had an actual lung washing process to try to remove tiny particles that he had
apparently inhaled from machining dust. I was required, along with about everyone else, to take
tests to see if there were exposure problems. I had no exposure, rarely went into the machining
areas, and AFAIK, never into the few rooms where Be-Cu was machined.

I do remember reading that in the late 60s Porsche had some racing brake disks made of
Be. Think of the dust they were putting out. Not good, but nobody knew. The solid material
is essentially harmless. EXTREMELY light. Think of it, Hydrogen, Helium, Lithium, Beryllium. It is
the 4th lightest element, and a usefully stiff and strong metal. Density is 0.066 lb/cubic inch. Compare
to steel at 0.292 and aluminum at 0.10. only 2/3 the density of aluminum, yet 4 times stiffer and
about the same yield stress. NEAT stuff.......but too toxic to normally use.

Bill

 

[fiver]

if anyone ever read the effects of steel poisoning they wouldn't go anywhere near the stuff,
and if they knew tofu was firmed up with the same stuff drywall is made from...


well they decided we were going shooting, but it was handguns today.
I let the G-son [with his moms help] pop off a couple of cylinders of 22LR with his great, great, Grampa's K-22.
then everyone else that wanted to got to shoot a cylinder full before I put it away.
for a 70 YO gun it's still pretty darn accurate with mundane Federal American ammo.

got the SIL pretty good, I handed him my Dan Wesson 22 revolver while I was standing next to an open box of 357 mag ammo.
he has shot my DW 357 quite a bit and figured I handed him some H-110 loads or the like and got all prepared for some ear ringing fire balls... pop...LOL!
he didn't know I had a DW in 22.

 

[Ian]

Just got a severe emergency alert on my phone, turns out a tornado cell is heading directly for me with softball sized hail. When the F#$g did I move to Kansas? Got the Tahoe crammed in the garage and keepsakes/wife/baby in the bunker, wish me luck.

Storm track is SSE by the way...

 

[Pistolero]

Good luck, Ian. Hope there is no tornado, and if there is one, it misses
you.

Looking at WX radar, looks like the most intense rain went right over you a few minutes
ago. Hope it was all liquid, and the winds were below 50 mph.

Bill

 

[462]

Good luck, man.

 

[Ian]

If there was one it looks like it went about a mile east of us, will find out tomorrow. That's one of the worst storms I can remember here, lots of hail and bad wind, horizontal rain, and lightening. Pretty much over now, as fast as it came. Wish I could post a video of the 25' tall cedars whipping over and slapping the ground. Did catch one photo:

 

[462]

Phew! Glad the family is safe.

 

[Pistolero]

Wind and a bit of hail is bad, but not like a tornado.

Glad you all are safe. Did your property all survive intact?

Bill

 

[Ian]

Mostly. We had the wind test a week or so ago, had to put the pump house roof back on after that one. It held this time but I just discovered I lost a window in the shop to horizontal hail and there are definitely some trees that didn't snap back up. Nothing major though, glad it wasn't any worse.

 

[fiver]

you can see the classic hook patterns on the edges there by Kerrville, and some nasty stuff northwest of junction.
if a couple of tornadoes didn't touch down it would be a minor miracle.

 

[Brad]

Glad to hear that all is safe at your place Ian.
We haven’t really had so much as a good thunderstorm this year. Kinda weird. Seems like all that weather stayed south thus far. I am not gonna complain about that one bit.