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Discussion in 'Shiny Things' started by crazydrummerdude, Jan 22, 2010.
Well, at least it's not a pipe.
I made one of those several years ago. I bead blasted the finished product so the tool marks are harder to see and it really does mess with people. I've had all kinds of excuses thrown at me like "you heated up the outside so you could stretch it enough to get the little cube inside" oser
Pretty cool example of CNC Here.
Your dimensions are a little off. The diameter of the hole you bore needs to be slightly less than the distance between two diagonally opposite corners of a face of the captured cube. When you bore .500" deep into a cube with an edge length of 2 inches, the diameter of your hole needs to be around 1.4 inches, depending on how much material you want to leave to hold the captured cube.
The dimensions of the Machinist's cube below are:
Edge length 2"
Hole diameter 1: 1.394" bored .500" deep
Hole diameter 2: .687" bored .250" deep
Week 4: In lab this week, we did various forms of welding. Nothing too exciting or exotic. But, I did some oxy-acetylene welding for the first time. Easy stuff. I should do it more often. I got a video, if anyone's interested.
My Mom owned a casting foundry for years before I went in the Army. I loved working there. I made patterns, poured the metals (silicon and white bronze, aluminum, silver) and finished metals. It was a great job till the frickin Chinese started to make everything we made for a few pennies on the dollar out of pot metal.
If you get another go at casting, how about some finned end caps to fill the ends of a 6" diameter aluminum tube? It's for an oil tank for my Triumph bobber dream.
Or if something more involved is possible ,how about a complete "bee hive" tank. About 3 and 1/2 quarts please.
Next semester, I'll take an all casting class.
Week 5: It was "optional." We were told that if we wanted to go to the lab and re-do whatever and work 1-on-1 with the TA's, we could. Hell f'ing yes, I want to go do more of this. So, I went to the lab. It was empty. There was a sign telling any interested students to go to the TA's office. They weren't there. So, apparently, out of a 200 student class, I am/was the only one who is interested in this stuff. This experience reminded me that it's a freshman/sophomore mechanical engineering class, and "optional" means "dude, bro, we totally don't have to go, and it doesn't matter."
I was looking forward to oxy/acetylene welding some more. Oh well, I have the right tip on my rig at home..
Week 6: This was the least hands-on lab we've had so far, but it was taught by the actual course instructor, instead of the TAs. I learned quite a bit; information that will come in handy for the rest of my metal-forming life.. but, no one else cared.
Next week, we go to the machine shop. Why, oh why isn't this required for my aerospace peers? Hands on work?! pfft, that's so below us AE's. Yeah, right...
I agree, its almost impossible to do extra work in some colleges, the teachers bail just as quick as the teachers.
Eh you know what I mean... Small amount of PUI this time of night.
I'm way ahead of you.
Is that a weapon?
I figured it was one piece, it's aerospace related (his major) and it doesn't have any vertical surfaces to contend with. As aircraft go, that's probably the easiest one to cast out of something. Plus, it isn't something he could easily machine unless he had a CNC (one of his criterion). It's also fairly constant in cross section so shrinkage and cooling problems should be minimal
With a piece of foam and some pictures, you could carve up a plug that would look pretty close and make a casting out of it. It could be hand finished against a belt sander and the flaws would not be so obvious in the final product (it's already kind of a blob shape).
He went for a shot glass instead. At least we know he was PUI when he came up with his final idea.
Hey now, next semester, I'll be taking an all casting class. I'm not done with this minor yet! We'll probably have the opportunity to make another styrofoam mold. I was thinking maybe a skull shifter knob for my Model A.
But, we'll see..
No, it's a fookin boomerang.
i personally think it's useful for engineers to have some hands on experience, but hardly necessary. and certainly not casting for ae's. what do you think most ae's do, and how do you think this would be useful?