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Re: Painted Myself Into a Corner Again


 

The small diameter section (that would be bored) is 2" long and about 1" diameter.? Isn't there a 2x rule, or something like that?? Anyways, I do have a steady rest that I think would capture the end.? Might as well use it



From: "Warren LeMay notebook@... [7x12minilathe]" <7x12minilathe@...>
To: 7x12minilathe@...
Sent: Thursday, July 27, 2017 11:23 AM
Subject: Re: [7x12minilathe] Painted Myself Into a Corner Again

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I agree unless you have a boring bar with an adjustable offset that is short enough...? With that, you could bore the large hole to depth and then flip it.
With that much stock out there though, I'm not sure how steady you are without the center.? Visually, I don't think I'd try the boring bar without a steady in the mix somewhere.? It could bite and coughup the whole mess on you.
Good luck with it....
Warren L

On 7/27/2017 1:54 PM, Arthur Coe acoe@... [7x12minilathe] wrote:
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Thanks.? I'm probably going with a slight variation of your suggestion since I will need to bore the hole to a bigger diameter at the small end.? I'll start by chucking the small end, using the already faced surface to assist in alignment.? After indicating as you suggested,? I'll then face the large diameter end.

Next, I'll flip and re-align the piece, using the now faced large diameter end against the chuck face to assist in the alignment.? Then drill through the existing center hole and bore the end to the larger diameter.





From: "Warren LeMay notebook@... [7x12minilathe]" <7x12minilathe@...>
To: 7x12minilathe@...
Sent: Thursday, July 27, 2017 2:05 AM
Subject: Re: [7x12minilathe] Painted Myself Into a Corner Again

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The new account worked great....and good photo too!!
I stay with my original suggestion - part it, flip it, center it, drill it, and face it.? You also have enough of the small area to indicate and even have finished the large area enough that you can indicate there too.
Just to make yourself feel better, you might want to indicate the large end, then take an inside mike and measure the finished area to the ways.? If it's too far for your mike, a 123 block should bring you to a test spot.
However, dialing in the small area in your 4 jaw as you normally would, then checking the large end should do it.? If both ends indicate, they are on axis.
Warren L

On 7/26/2017 4:49 PM, acoe@... [7x12minilathe] wrote:
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I am now the proud possessor of a Flickr account.? Trying again with a photo posted on that site (let's see if it works): ?
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So, there (assuming photo is accessible) is the piece I'm working on.? If I don't go the short drill bit route suggested by one of you guys, I'll be band sawing the turned section off at about Section A-B.? The face at C has been faced off as close as I could get to the TS center and there is a center drilled hole for the TS also.

Right now the center drilled hole, the lesser diameter turning (about 1" diameter) and the turned major diameter section (2" diameter) are all concentric.

My goal is to get the sawed off portion re-mounted in my 4-jaw so it is centered and all the turned sections are concentric to the rotation of the spindle.

Got a couple of ideas already.? Any other thoughts?

Also, did this Flickr thing actually work?

Virus-free.






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