Author Topic: Zee Needs Popcorn  (Read 57385 times)

Offline jonesie

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Re: Zee Needs Popcorn
« Reply #480 on: September 09, 2018, 12:08:48 AM »
you want to make sure you have a handle on the tang of the file also.i watched a co worker have one catch and run the tang thru the palm of his hand and come out the top of his hand.he was lucky it missed everything going thru but took a real long time to heal.good idea working around machines to keep your tetanus shot up to date.cheap ins.

Offline zeeprogrammer

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Re: Zee Needs Popcorn
« Reply #481 on: September 09, 2018, 02:22:16 AM »
you want to make sure you have a handle on the tang of the file also.i watched a co worker have one catch and run the tang thru the palm of his hand and come out the top of his hand.he was lucky it missed everything going thru but took a real long time to heal.good idea working around machines to keep your tetanus shot up to date.cheap ins.

Quite so. I can't say I'm doing the right thing so I'm being extra careful. Like Stuart said...I stand off to the side. I won't catch it in the gut...but I don't want it in the hand either.

When I started this hobby...the first thing I did was get a tetanus shot. Hadn't had one in years. A couple of years ago I sliced my hand open (not related to machining) and got another.
I do sometimes wonder about the need. Tetanus is associated with horses and manure. As well as wounds not open to the air. I sometimes think the risk is low in the shop...but I won't chance it. A shot is cheap and easy. That's also why I take the flu shot every year. Maybe it works...maybe it doesn't. I've only missed one (they were out) since they started with those horrible air guns. I tend to think it builds the immunity anyway. I don't think I've had the flu (what I think is the flu) since I was a kid.

Now I hit 65...have to think about vaccines against pneumonia. That stuff scares me too.

Yes...that kid you see to the left...is just the inner me. I'm decaying otherwise. But not in spirit!!
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline b.lindsey

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Re: Zee Needs Popcorn
« Reply #482 on: September 09, 2018, 02:29:56 AM »
I'm getting a flu shot Monday. Already been a few cases reported locally. Sure seems early though.

Bill

Offline propforward

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Re: Zee Needs Popcorn
« Reply #483 on: September 09, 2018, 02:42:23 AM »
It's worth doing. I got real flu earlier this year. Took me down for about 4 weeks, and a bunch more to get back up to full activity.
Stuart

Forging ahead regardless.

Offline zeeprogrammer

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Re: Zee Needs Popcorn
« Reply #484 on: September 09, 2018, 06:33:24 AM »
I'm getting a flu shot Monday. Already been a few cases reported locally. Sure seems early though.

Already?!  :o
That does seem early.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline kvom

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Re: Zee Needs Popcorn
« Reply #485 on: September 09, 2018, 01:04:17 PM »
My strategy for nuts is to call AME and use the Amex tool.   :facepalm2:

I've never had to use or make square nuts.   :shrug:

Offline zeeprogrammer

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Re: Zee Needs Popcorn
« Reply #486 on: September 09, 2018, 08:37:55 PM »
Finished the eccentric strap.
After a little sanding of the sides and a little turning, it runs smoothly with no play.

I shouldn't have made the holes for the bolts as large as I did. I went for free fit and probably should have gone for close fit.
One of the holes just barely broke through its arm. Not very noticeable.

The bolts themselves were a problem to make. I need some suggestions on how to hold them so the ends can be cleaned up.

I'll wait to make more nuts and bolts until I see how the engine comes out.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline crueby

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Re: Zee Needs Popcorn
« Reply #487 on: September 09, 2018, 09:15:34 PM »
What is wrong with the bolts, what needs cleaning up?

Offline zeeprogrammer

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Re: Zee Needs Popcorn
« Reply #488 on: September 09, 2018, 09:42:29 PM »
What is wrong with the bolts, what needs cleaning up?

The ends.

Well perhaps there's a better way to do what I wanted.
I turned about 1 1/4" of .125 stainless to about .105. (This was done by having only a little bit of rod out, turning it, pulling a little more out, etc.)
Used a file to put a chamfer on then used a die and threaded it.
After threading, since so much was sticking out I couldn't use a parting tool to get the length I wanted so I used a hacksaw.
Now the end is jagged and crappy. I tried filing it but that didn't go that well.
The 2nd bolt also had to be cut off...so it ended up with two bad ends (and a little too short).

I'm thinking I should have taken some scrap, drilled/tapped it, and used it as a jig.
Put the bolt in and mill the end hoping it keeps the thread from being damaged to much.
But it wouldn't be very 'domed'.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline b.lindsey

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Re: Zee Needs Popcorn
« Reply #489 on: September 09, 2018, 09:48:41 PM »
Are they more like studs with a nut on both ends?  If so put a piece of scrap round stock in the lathe, drill and tap it to match the bolts (studs), then use a jam nut to hold them in to face them off in the lathe. Or am I missing something?

Bill

Offline propforward

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Re: Zee Needs Popcorn
« Reply #490 on: September 09, 2018, 09:49:28 PM »
You could turn the bolt diameter to length, thread the end, then part off behind the hex with some extra length.

If you took a piece of rod, drilled a close fitting hole through it to suit the bolt diameter, slit it to make a simple collet - then you could hold the bolt in your lathe chuck, clamping only the unthreaded part of the bolt, and finish the dome on the end of the hex.

There's probably an easier way of doing it though, but that would work.

Overall though I think that eccentric assembly is looking really good.
Stuart

Forging ahead regardless.

Offline zeeprogrammer

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Re: Zee Needs Popcorn
« Reply #491 on: September 09, 2018, 10:23:22 PM »
Thanks Bill and Stuart.

Both ideas would work.

Thinking a little more (always insufficient but always a good idea)...
The eccentric strap's arm is on the order of 0.34" Overall length is about 0.528"
So another approach is to cut the rod to length and thread both ends sufficiently for the bolts.
That is, thread each end for .125" and I should still have enough in the middle to hold onto.

Someday...collet chuck.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline 90LX_Notch

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Re: Zee Needs Popcorn
« Reply #492 on: September 09, 2018, 11:04:45 PM »
Which end of the bolt is the problem?

-Bob
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My Engine Videos on YouTube-
http://www.youtube.com/user/Notch90usa/videos

Offline zeeprogrammer

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Re: Zee Needs Popcorn
« Reply #493 on: September 09, 2018, 11:50:55 PM »
Which end of the bolt is the problem?

The end that was hacksawed. After that, I didn't know how to clean up.

I think I've got it now.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Online Kim

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Re: Zee Needs Popcorn
« Reply #494 on: September 10, 2018, 05:38:15 AM »
Well, when you get your collet chuck, you can use that to hold the threaded end while you clean up the head.

But, a quick and simple thing I did before I had a collet chuck was to run a few nuts up on the threaded end and butt them up together nice and tight and hold the nuts in the 3-jaw chuck.  Since you're just cleaning up the end it doesn't really have to run concentrically.  It'll clean up just fine that way.  But this probably wouldn't work for you if you didn't thread them up most of the way.

KIm

 

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