Trimming on the lathe, no endmill or sandpaper.

[mikespenturningz]

Yup, I think we are all agreeing on the point that the end tube/blank must be right Mike.

Actually Dan the tube can be flush with the blank but be way off as far as being square with the tube as it runs through the blank. My point is that the blank and tube need to absolutely square and that is not what is indicated in the statement that it simply needs to be flush.

 

[Dan Masshardt]

Actually Dan the tube can be flush with the blank but be way off as far as being square with the tube as it runs through the blank. My point is that the blank and tube need to absolutely square and that is not what is indicated in the statement that it simply needs to be flush.

Thanks for clarifying mike I respectfully disagree

My experience has shown that all that matters is that the bushing fits perfectly on the flush tube and blank If it sits right it will turn out any irregularities when placed between centers

 

[philipff]

Ed, I have posted that same process at least 4 times on this and other web pages. It works. Philip

 

[mikespenturningz]

Ok Dan then try this sand a blank and tube at 3 degrees off square on the end, now you will find that the end of the tube is also 3 degrees off square but flush, now put your bushings on that exactly as it is and turn it and apply hardware to it. You will have a gap on one side and the other side will be nice and tight. You cannot turn out an end of the blank that is not square. I think you don't exactly understand what I am saying. I understand that the blank being drilled off center will work itself out and stated that. What I am concerned with is the very end of the blank.

 

[Dan Masshardt]

Ok Dan then try this sand a blank and tube at 3 degrees off square on the end, now you will find that the end of the tube is also 3 degrees off square but flush, now put your bushings on that exactly as it is and turn it and apply hardware to it. You will have a gap on one side and the other side will be nice and tight. You cannot turn out an end of the blank that is not square. I think you don't exactly understand what I am saying. I understand that the blank being drilled off center will work itself out and stated that. What I am concerned with is the very end of the blank.

I don't really know honestly. All I know is that what I do works every time with no gaps at assembly.

 

[John Den]

Ok Dan then try this sand a blank and tube at 3 degrees off square on the end,

3 degrees error in drilling would result in a 3mm wall thickness at the other end of the blank.
Even I'm not that bad at my age!
Respectfully,
John

 

[edstreet]

Ok Dan then try this sand a blank and tube at 3 degrees off square on the end, now you will find that the end of the tube is also 3 degrees off square but flush, now put your bushings on that exactly as it is and turn it and apply hardware to it. You will have a gap on one side and the other side will be nice and tight. You cannot turn out an end of the blank that is not square. I think you don't exactly understand what I am saying. I understand that the blank being drilled off center will work itself out and stated that. What I am concerned with is the very end of the blank.

I don't really know honestly. All I know is that what I do works every time with no gaps at assembly.

Perhaps this will help greatly.

This is another image from the original project. As you can see the offcenter end is on the tail stock side. I took the liberty of marking each side 1,2,3 and 4. Here you can clearly see how off center it really is. The arrows are the same size as they are duplicate of the original and I just moved and rotated them.

The method I posted does in fact work good with offcenter drill holes. Now your reference points will be the end of the drill holes and yes there will be some parabolic arc goes on inside the drill hole and you may need to adjust that to some degree.

 

[edstreet]

Sorry if this is overkill but I had to share. I did some more trimming on the lathe and I wanted to show how it looks when you are nit picky about details.

 

[BayouPenturner]

Ed, sorry to get off topic but what type of wood is the bank younarcdrilling.

all the discussions show that there are many ways to achieve the end result.

Happy New Year

 

[Dale Allen]

Looks like a section of an alien cast in clear resin, one with tentacles.
Hope it didn't put up too much of a fight!:biggrin:

BTW, it still does not address the issue of alignment AFTER the tube is glued in.........but then the OP did not have the tube in either. So, it's OK!

 

[edstreet]

Looks like a section of an alien cast in clear resin, one with tentacles.
Hope it didn't put up too much of a fight!:biggrin:

BTW, it still does not address the issue of alignment AFTER the tube is glued in.........but then the OP did not have the tube in either. So, it's OK!

That was discussed in the OP and it does take it into account and it's just as accurate and reliable with or without the tube. To many people are getting hung up on the tube and using it as a crutch.

Ed, sorry to get off topic but what type of wood is the bank younarcdrilling.

all the discussions show that there are many ways to achieve the end result.

Happy New Year

Many ways yes but as the topic suggest ....

http://www.penturners.org/forum/f217/banksia-porn-117765/

 

[GaryMGg]

Ok Dan then try this sand a blank and tube at 3 degrees off square on the end, now you will find that the end of the tube is also 3 degrees off square but flush, now put your bushings on that exactly as it is and turn it and apply hardware to it. You will have a gap on one side and the other side will be nice and tight. You cannot turn out an end of the blank that is not square. I think you don't exactly understand what I am saying. I understand that the blank being drilled off center will work itself out and stated that. What I am concerned with is the very end of the blank.

I don't really know honestly. All I know is that what I do works every time with no gaps at assembly.

I've re-read what Dan and Mike wrote a couple of times and I believe they're saying the same thing.

When Dan says "all that matters is that the bushing fits perfectly on the flush tube and blank" he is asserting the blank end is square to the tube.
If you square the blank to the tube at both ends without milling the tube at an angle, turning between centers will result in blanks and components fitting correctly.

If you drill the hole at a slight angle and then square the blank to the tube on both ends, you still end up with a properly faced cylinder--it's just off-center thru the blank.

Realize this solution isn't good for segmented blanks, celtic knots, and other blanks where being dead-center is crucial to a great looking pen but that's another issue.

 

[Dan Masshardt]

I've re-read what Dan and Mike wrote a couple of times and I believe they're saying the same thing. When Dan says "all that matters is that the bushing fits perfectly on the flush tube and blank" he is asserting the blank end is square to the tube. If you square the blank to the tube at both ends without milling the tube at an angle, turning between centers will result in blanks and components fitting correctly. If you drill the hole at a slight angle and then square the blank to the tube on both ends, you still end up with a properly faced cylinder--it's just off-center thru the blank. Realize this solution isn't good for segmented blanks, celtic knots, and other blanks where being dead-center is crucial to a great looking pen but that's another issue.

I think you nailed it.