Stop in for a cup of coffee

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You know, as I have gotten older, I have found myself looking back on some things that I missed the first time around and that I should have listened too, but didn’t. One of those is a saying that comes to mind here. It was said one night by my FFA advisor. We got back late one night from a trip to find a bunch of doped up skateboarders messing outside our school. A couple guys, myself included, started poking fun at them. My advisor turned and pulled us aside, told us something to the effect “boys, when you take your hand, point a finger in someone’s directions and act judgmental, never forget there are three more fingers pointing right back at you off your own hand and you’re simply hiding behind someone else to disguise your own flaws.”

Moral of the story, don’t be judgmental towards someone else. Or at least try not too.
 
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dukeboy_318 said:
You know, as I have gotten older, I have found myself looking back on some things that I missed the first time around and that I should have listened too, but didn’t. One of those is a saying that comes to mind here. It was said one night by my FFA advisor. We got back late one night from a trip to find a bunch of doped up skateboarders messing outside our school. A couple guys, myself included, started poking fun at them. My advisor turned and pulled us aside, told us something to the effect “boys, when you take your hand, point a finger in someone’s directions and act judgmental, never forget there are three more fingers pointing right back at you off your own hand and you’re simply hiding behind someone else to disguise your own flaws.”

Moral of the story, don’t be judgmental towards someone else. Or at least try not too.
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I dont judge. Everybody’s an asshole until they prove different..:lol:
 
Mattax said:
Speaking of which Karl - We have a proposal for you.
It's much simpler than a full engine. It's one of these little parts for our cars (well some of our cars) that is no longer made.
I'm told that having a CAD or 3D model is better than paper drawings these days.
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A paper drawing is what's needed to make a tool or machine a part from...

If you have a 3D model, you can 3D print a part straight from the model without any machining or tooling necessary...

Plus 3D printing can make some details that are impossible to machine... Say a hollow sphere... You can't machine a hollow sphere in one piece, but theoretically you can 3D print one...
 
krazykuda said:
A paper drawing is what's needed to make a tool or machine a part from...

If you have a 3D model, you can 3D print a part straight from the model without any machining or tooling necessary...

Plus 3D printing can make some details that are impossible to machine... Say a hollow sphere... You can't machine a hollow sphere in one piece, but theoretically you can 3D print one...
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I was thinking 3D print but Dana doesn't think a 3D printed one will hold up. But a CAD or soldiworks drawing might be useful in making a die for injection molding.

Dana has the measurement details. This is what we want to get made. You may recognize it.
upload_2020-3-10_22-36-57.png
 
Mattax said:
I was thinking 3D print but Dana doesn't think a 3D printed one will hold up. But a CAD or soldiworks drawing might be useful in making a die for injection molding.

Dana has the measurement details. This is what we want to get made. You may recognize it.
View attachment 1715485162
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Yeah, I question the durability of some of the 3D printing materials... However, they are always developing more and more...

But I don't think that they will be able to get one tough enough to be a direct substitute for hard parts like steel...
 
krazykuda said:
I drew up a model of a crankshaft for my final project for my Solidworks class....

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Mopar Tim said:
Sorry, it looks wonkie to me.......:( Journals are not lined up correct, but who am I? :lol:
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Unconventional said:
The man's got a good point there
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They are 180° apart, you just can't tell by the angle of the view... I double checked.... It could just be the way that I fudged the counterweights...

You can see in the side view here that the journals for #1 & #2 are opposite the journals for #7 & #8...


Crank 2 view.jpg
 
krazykuda said:
Yeah, I question the durability of some of the 3D printing materials... However, they are always developing more and more...

But I don't think that they will be able to get one tough enough to be a direct substitute for hard parts like steel...
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They make pistols out of polymers in a 3d printer...
 
Ddaddy said:
So the man is working hard on developing a new skill to get ahead in his life and you guys are being technical critics?

WTH?

Seriously, what part of your brain made you decide that was a good idea?

That’s just F’d up.

I’m out.
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It's ok Dave, thanks for sticking up for me...


I dish out a bunch, I should be able to take it also...


Their criticism is good so I make sure that I drew it right... I did go back into the drawing to verify that it is correct, and luckily it is... This is my final project for the class that has more points and weight than the regular assignments, so I need to make sure that I have it done properly...

I would rather someone caught a problem and let me know so I can correct it before I hand it in and get points off... So far I have a high A going in the class and I want to keep it as high as I can...
 
Mopar Tim said:
Sorry, it looks wonkie to me.......:( Journals are not lined up correct, but who am I? :lol:
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You may need to get your eyes checked and get some new glasses.... :poke: :lol:


Sometimes looking at things in 3D creates an optical illusion...

Luckily I had a crank in my room right next to me when I drew it, so I made sure that I have the journals in the proper orientation...


I did do basic shapes and fudged some of the counterweights because as Chris can account for, the sketch for the details must be what's called "fully defined" for you to go to 3D or it can cause issues later... With some of the complex geometry in the counter weights, it can be difficult to get the sketches to be fully defined so I can extrude them into 3D details... The main purpose of the final project is to get the parts to assemble in 3D and move correctly, so a few scallops in the details is not as necessary as getting the parts to fit and move correctly....
 
Mattax said:
I was thinking 3D print but Dana doesn't think a 3D printed one will hold up. But a CAD or soldiworks drawing might be useful in making a die for injection molding.

Dana has the measurement details. This is what we want to get made. You may recognize it.
View attachment 1715485162
Click to expand...


Yes, a 3D model is good to see the shape and geometry and may be used as a core to make a mold with...

3D printing is good for prototyping to test the fit for a design as you can print a part within a day depending on your 3D printer and it's capacity... The one at my first school took 24 hours to print the models...

After you 3d print it and make sure it will fit and work properly, then you can kick off making more durable tooling for the parts once you have verified the design is good...
 
I'm back from Colorado, Grand Caravan worked out, seller showed, no tickets. Gotta say I liked Denver/Colorado, plenty of outdoor outfitters (didn't know it was the home of Eagle Claw), 80 MPH speed limits, gas was a lot cheaper than in WA. Made it to Twin Falls Idaho first leg, then on into Seattle, got hood to body shop on Monday. Smelled of lot of "Tegrity" in Denver lol!

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IMG_0609.jpg
 
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