Machinist
@Machinist@lemmy.world
- Comment on I need to vent about plastic milk jugs 18 minutes ago:
That makes more sense. Nothing to do with wear. I guess the dimple would be a removable insert. You could have a selection of them and swap when calibrating the line.
I would think that blow mold is happening right before washing and bottling. Tube blanks are probably supplied in Gaylord’s coming from the plastic producer. Transporting semis full of empty jugs doesn’t make sense.
I’m suprised there is that much variation in volume, I would expect the temps to be more consistent. I guess the compressed air temp is the main variable, mold temps should be pretty consistent. Ambient air temp when the bottle is cooling probably also plays a role, more or less shrink before it “freezes”. Not sure if they’re made from LDPE or HDPE but those are both really stretchy, so I guess they very well could jump all over on size.
Most of my mold experience is in automotive, which is going to be a tighter process.
- Comment on I need to vent about plastic milk jugs 2 hours ago:
I don’t think this is correct and would need to see a source before I believe it. I doubt the dimple is adjustable in the way you’re describing.
The amount of wear needed to change the volume by a noticable margin would be quite significant. Surface finish of the mold would be degraded enough that they would probably scrap the mold before using an adjustment like this as the mold would have sticking problems.
It might be volumetric compensation, but I doubt it’s directly wear related.
The mold is going to be at least two parts that split to get the blown jug out. The jug feedstock probably starts as a molded tube blank with the threads already in it. Would look like a test tube with a milk jug mouth.
Thinking about it, and I suppose you could actually call it wear compensation. Machine the mold with max dimple present. As your parting faces/lines take damage, you reface, and take some off the dimple to compensate for reduced volume. Maybe. That’s my best guess if it isn’t structual. Usually the rest of the mold has taken enough damage/wear that you’re scrapping the entire thing.
- Comment on Can I use your shower? 1 week ago:
Ah. Mistook the red pepper for a jar of instant coffee.
- Comment on Can I use your shower? 1 week ago:
I don’t know about the coffee and salad dressing, but, I totally keep a bottle of Ajax dish soap in the shower.
It’ll cut the gear oil off you.
- Comment on Sooo... This is happening on Imgur 2 weeks ago:
That tasty gif never gets old.
Boom! Knocked the fuck out.
- Comment on Accidental rapture 2 weeks ago:
I really like the interpretation of Cain and Abel having it’s roots in the transition from Hunter Gatherer to Agraian society. Gobekli Tepe and all that.
Another couple of fun ones are Christmas trees being forbidden in Jeremiah and cannabasam (forget where in the OT). I assume your uname is in reference to that cannabis use. The manna as psychedelic mushrooms is also a cool idea.
- Comment on Accidental rapture 2 weeks ago:
I like Cain and Abel/hunter gatherer vs agrarian theory.
The whole sons of god are angels having hybrid giant babies with human women is just a lot of fun.
- Comment on Accidental rapture 2 weeks ago:
Was raised in fundamentalism, lost my religion over a decade ago. (I’m cool with religious people that aren’t evil shitheads trying to brain wash children.)
You’re right about the snakes. Also, the plural tenses in Job are weird.
Not related to the post. What’s your take on the Nephillium?
- Comment on Standardization rule 4 weeks ago:
One Man, One Jar.
- Comment on Standardization rule 4 weeks ago:
This is fantastic! I didn’t know this standard existed.
New life goal is somehow getting this added to a production print.
- Comment on We all do this 5 weeks ago:
Not OP, but instrumental metal for working: Karma To Burn, Red Sparowes, Pelican (Pelican can feel a little souless but that’s my opinion).
- Comment on fragile masculinity 1 month ago:
Trichocereus bridgesii, monstrose form. Called penis cactus or toothpick cactus depending on spines. T. bridgesii contains higher levels of alkaloids, including mescaline, than the more commonly used T. Pachnoi “San Pedro”. The monstrose form is said to be particularly potent, although it is slower growing.
- Comment on I feel like a buffet would fix this 1 month ago:
I agree with you. I still can’t make sense of it and I don’t understand how he is seen as having charisma. Even his voice is repulsive.
He’s so fake and slimy in his mannerisms.
Only thing I can figure is that many people just don’t perceive him this way and find him warm and personable.
- Comment on CNC 1 month ago:
Porque no los dos?
I’ve found that subs really dig it when you’ve machined your own spanky tools…
Also, HAAS are some jank ass machines. Tiny ways, newer controls are glitter covered shit, they fucked up the remote handwheel…
- Comment on I'm blue ba da ba da dee da ba dieee 2 months ago:
Huh. I’m not sure how far back furries go.
If not, it’s certainly proto furry porn. Pretty sure it predates the formulation of Rule 34.
- Comment on I'm blue ba da ba da dee da ba dieee 2 months ago:
This was covered back in '93 on usenet. Behold: Smuckfest!
- Comment on Won't you come 2 months ago:
That’s fantastic.
I’ve known a lot folks that talk like Boomhauer, (I’ve been told I do, as well.)
- Comment on Won't you come 2 months ago:
Black Hole Sun and Beavis and Butthead were both on MTV back then. I don’t remember if they watched the video on the show.
Anyhow, that video was up there with NIN’s Closer for general weird awesomness. The crazy smiles and expanding eyes are burned into my memory.
Also, proto Hank Hill on Beavis and Butthead.
I remember my grandfather being very upset about the “Beaver and Butthole” show.
- Comment on 2 months ago:
I very much agree. It is held up as this wonderful parable of how you should live. It’s the sort of thing that the powerful use to take advantage and abuse the weak.
This kind of puerile shit is bad for children and is just like a lot of the Jesus crap that gets pounded into kids.
- Comment on whats your dumb purchases? 2 months ago:
Rock and Roll!
What cheap woods are the most impact resistant for splintering and splitting?
What is the best way to cure wood to prevent splitting without a kiln? Slap a heavy coat of latex paint on a log/burl/root and let it sit 6mo/year?
What are the most machinable hardwoods? (In particular as regards tearout, warping, and tolerance of thin sections)
In your opinion, what is an available underappreciated or interesting wood to work?
- Comment on whats your dumb purchases? 2 months ago:
Are you actually a wood scientist; and, if so, can I pick your brain?
Nice saw, BTW!
- Comment on arriving 3 months ago:
I’ve always heard this. Helped with pit on a friend’s dad’s drag car when I was a kid. It makes sense, but I’ve never looked into how large of an effect it actually is.
- Comment on Hollow Knight: Silksong Sparks Debate About Difficulty and Boss Runbacks 3 months ago:
I’ve always heard: Respect is given, not earned. Trust is earned and easy to lose. Don’t confuse politeness with respect.
- Comment on Like a heart 3 months ago:
Alcove in blue. It didn’t extend into her intestines or anything, it was just a small pocket in the back wall.
- Comment on Like a heart 3 months ago:
It was in the back wall of the vagina, a little bit before her cervix.
- Comment on Like a heart 3 months ago:
I actually dated a girl who had a chambered pussy. She was born with mild spina bifida, and there was a scar on her tailbone.
Anyhow, she loved doggy style. I’d get going good and then pop the head of my dick into the alcove, she’d cum her brains out.
Fun times.
- Comment on 9,000 years ago. Wonder if even way back then it was referred to as doggy 3 months ago:
The Posterior Fornix can be stimulated during doggy style. (Anterior Fornix in missionary.) They are similar to the g-spot, with some people preferring fornix orgasm to g-spot or clitoral stimulation. You aim above the cervix with the tip of your dick or fingers and stretch that area.
This depends on the anatomy of both partners. It’s also a skill that needs to be trained. However, if you can make it work, and the recipient is sensitive to it: fireworks! Like, grunting, moaning, and prayers from a bad porno level of good.
- Comment on Do you recognize this PC case? 3 months ago:
- Comment on bmw 3 months ago:
Dated a girl with a BMW and the turn signal was real fucky. Didn’t click right, had no feel. You had to look at the dash to even see if it was on.
German engineering can suck my fucking balls.
- Comment on bmw 3 months ago:
Oh, you’re that very special person. Just watching people pass you on the right like a moderately stoned bovine.
