New project, I'm in over my head.....

[bpimm]

I've read that. At this point I feel good to get threads to work together period. I doubt I could make a thread gauge to tight enough tolerances to work with anyone else's threads so I'm happy with having the two parts screw together. lol

 

[Canus]

You stated "something about boring it to the major diameter then threading.. was a little loose fitting.. ". Shouldn't you be boring to the MINOR diameter then threading? Then the grooves cut by threading would give you the major diameter.

 

[bpimm]

You stated "something about boring it to the major diameter then threading.. was a little loose fitting.. ". Shouldn't you be boring to the MINOR diameter then threading? Then the grooves cut by threading would give you the major diameter.

Yep, I looked at my notes and read the wrong number, was really happy when I hit the bore dead on, cut the threads and wtf then I realized what I had done. more scrap in the bin...

 

[Silverbullet]

Nice lathe , great family project too. We're waiting for updates already , threading looks good on both pieces pictured.

 

[bpimm]

Thought I'd post some progress pics, I've got most of the internal turning done, here are the three pieces starting with the inside of the nose cone.

The center section.

the tail section with 1 bearing pocket cut,

all three

and screwed together.

I drilled some weight reduction holes inside the tail section.

Today the nose cone is slowly appearing on the mill.

When the nose cone is done the tail section goes in the mill for it's external shaping.

Brian

 

[bpimm]

Nosecone is off of the mill.


I also drilled the motor mount bolt pattern,

Motor mounted.

Tail housing is on the mill now. Starting to get excited...

 

[brino]

Wow!
It sure does NOT look like you're in over your head!

Great progress on an ambitious project.
Your hard work is paying off.

...and thanks for sharing it with us.

-brino

 

[bpimm]

Wow!
It sure does NOT look like you're in over your head!

Great progress on an ambitious project.
Your hard work is paying off.

...and thanks for sharing it with us.

-brino

Honest, I've never made anything this complex, and I did have to make 2 of the center sections.... the first one ended up with RH threads on one end... I just couldn't get the threads to start. I kept taking another .001 off and after I was .010 -.015 over size by the dials I figured it out. lol.

I am very happy with how it's coming out, surprised too.

 

[bpimm]

Tail section just came off the mill, now for some cleanup.
all together.

Back to the lathe tomorrow.

 

[bpimm]

Turned the center section down to match the ends and sanded it down to 400 grit, how fine do I have to sand aluminum to get a good polish?