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Need aluminum block machined

A place to ask general spud cannon related questions.
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Unread postAuthor: jackssmirkingrevenge » Wed Dec 21, 2011 12:18 am

I love this forum :)
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Unread postAuthor: al-xg » Wed Dec 21, 2011 4:21 am

Damn, I will make use of this community someday...

In the mean time, off to mix some epoxy ! :)
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Unread postAuthor: ramses » Thu Dec 22, 2011 5:03 pm

all right, more questions. the drawing seems under dimensioned. are these assumptions accurate?
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Unread postAuthor: JDP12 » Thu Dec 22, 2011 5:36 pm

accidental double post, mods delete it
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Last edited by JDP12 on Thu Dec 22, 2011 5:42 pm, edited 1 time in total.
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Unread postAuthor: JDP12 » Thu Dec 22, 2011 5:42 pm

Alright so everyone can call me a moron forever, because I've clearly forgotten everything I learned about dimensioning.

SO, this one should actually be correct!! Take a look, made a couple changes, so let me know!
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Unread postAuthor: ramses » Thu Dec 22, 2011 5:57 pm

All right, knock on wood, those look good :D :D. We'll see if I change my mind again...

And don't beat yourself up over this. I was about to drill, then I realized the ambiguity :oops:. THAT would have been bad. Just like you usually don't get parts made by others from drawings, I usually don't' make parts from other people's drawings.

One thing to keep in mind for everyone who might be reading this: It makes things much easier if you call out all dimensions for a side from the top left corner as it would sit in the vise, and call out to the center of features like slots or holes. Depths are best called from the top of the part.

One thing engineers lack (or so I've heard) is an appreciation for how things are actually manufactured. This is not a rant, simply advice on how to become better engineers. :lol:
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Unread postAuthor: JDP12 » Thu Dec 22, 2011 6:51 pm

Ok Thanks for the feedback, as an aerospace engineer student I appreciate it!
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Unread postAuthor: ramses » Wed Dec 28, 2011 10:17 pm

Some options (These are wanna be section views):


And yes, the drawings are a mess :oops:
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The way it is now.
square.JPG
"Normal" end mill, square corners, possibility of square top view corners
radiused.JPG
With ball end mill. Right side is tangent to the .625" hole.
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Unread postAuthor: Gun Freak » Wed Dec 28, 2011 10:31 pm

Dude, F7 please!
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Unread postAuthor: ramses » Wed Dec 28, 2011 10:58 pm

This is just a sketch. I didn't make the whole part.
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Unread postAuthor: Gun Freak » Wed Dec 28, 2011 11:07 pm

Sorry I just think the grid makes it harder to understand.
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Unread postAuthor: ramses » Wed Dec 28, 2011 11:10 pm

I just realized that I could exit sketch mode and still see the drawn lines.

I agree that the grid is confusing, especially when the features are arbitrarily thrown on it.
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Unread postAuthor: Gun Freak » Wed Dec 28, 2011 11:19 pm

Wait... My apologies, I thought the gray lines were the automatic grid that can be toggled with F7 but they're just lines you drew :? I'm an idiot! Carry on :lol:
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Unread postAuthor: JDP12 » Wed Dec 28, 2011 11:30 pm

Thanks for the clarifications ramses, lets go with a normal end mill square.

I just now got home finally so I'll post the new drawings of the rod in about 15 minutes.
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Unread postAuthor: ramses » Wed Dec 28, 2011 11:31 pm

no; you're correct.
there are the grey grid lines (that for some reason wont go away with f7) and grey dimension lines.

I should have exited sketch mode (which gets rid of the useless and confusing grid lines)
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