Rear Chuck For Porper Model B Lathe

Does anyone, know what the od and id of this adaptor is ? perhaps someone here that has one could measure it

Thanks
Mark
 
Arnot Wadsworth said:
He is not going to tell you, no matter how many times you ask.:bash:
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i've never bought a pair of shoes without KNOWING they fit first :smile:
 
BHQ said:
i've never bought a pair of shoes without KNOWING they fit first :smile:
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Surely, you can take your feet to the drum sander and make them fit any size .
Joey~Wanted to know what the ID is if it can be threaded to fit my Logan but I guess it's a trade secret~
p.s. I don't own Porper.
 
JoeyInCali said:
Surely, you can take your feet to the drum sander and make them fit any size .
Joey~Wanted to know what the ID is if it can be threaded to fit my Logan but I guess it's a trade secret~
p.s. I don't own Porper.
Click to expand...

I thought about putting one on my Porper Model B years ago but I decided that I would still need collets to protect the wood from the chuck marks. If you have a rear chuck coupled with delrin collets you end up with the error in the chuck coupled with the error of the collet.

Might as well just make a bunch of collets that fit the spindle bore and forget the rear chuck in my humble opinion.
 
ID is approximately 1.80; OD measures at 2.497 on my calipers. After heating the adapter with a blow dryer, it slid snugly into place on my model B. Martin




almarktool said:
Does anyone, know what the od and id of this adaptor is ? perhaps someone here that has one could measure it

Thanks
Mark
Click to expand...
 
Arnot Wadsworth said:
I thought about putting one on my Porper Model B years ago but I decided that I would still need collets to protect the wood from the chuck marks. If you have a rear chuck coupled with delrin collets you end up with the error in the chuck coupled with the error of the collet.

Might as well just make a bunch of collets that fit the spindle bore and forget the rear chuck in my humble opinion.
Click to expand...
you're right about that
but........................
i dont know why, but my spindle is not the same diameters thru out
it needs to be bored out
and i dont have a clue how the hell to do that
 
Arnot Wadsworth said:
I thought about putting one on my Porper Model B years ago but I decided that I would still need collets to protect the wood from the chuck marks. If you have a rear chuck coupled with delrin collets you end up with the error in the chuck coupled with the error of the collet.

Might as well just make a bunch of collets that fit the spindle bore and forget the rear chuck in my humble opinion.
Click to expand...
I made a delrin flanged tube with 1.25 ID and use O-rings ( KJ suggested it first ).
I'm making another one with 1" id for shafts.
 
jazznpool said:
ID is approximately 1.80; OD measures at 2.497 on my calipers. After heating the adapter with a blow dryer, it slid snugly into place on my model B. Martin
Click to expand...
thanks buddy, now i got something to go on
 
Hey Brent, my spindle is the same as yours, somewhat cobb rough on the inside. It HAS already been bored by Porper. On the other hand a few friends have older Model B's with spindles that are are as smooth as a baby's behind on the inside. It appears to have been a cost issue to go to the cheaper quality spindle.

Martin



BHQ said:
you're right about that
but........................
i dont know why, but my spindle is not the same diameters thru out
it needs to be bored out
and i dont have a clue how the hell to do that
Click to expand...
 
jazznpool said:
Hey Brent, my spindle is the same as yours, somewhat cobb rough on the inside. It HAS already been bored by Porper. On the other hand a few friends have older Model B's with spindles that are are as smooth as a baby's behind on the inside. It appears to have been a cost issue to go to the cheaper quality spindle.

Martin
Click to expand...

And the cost issue was the most stupid thing he has done yet. Spindles need to be smooth on the inside, Only thing worse than stupid is stubborn and stupid.
 
RocketQ said:
I just bought one 2 weeks ago and the bore is purdy darn smooth.
Click to expand...

If it was a new one maybe he changed it, I bought two new spindles to keep on the shelf and sent them to the machine shop for boring, they were that bad.
 
Michael Webb said:
If it was a new one maybe he changed it, I bought two new spindles to keep on the shelf and sent them to the machine shop for boring, they were that bad.
Click to expand...

The spindle bore of my Jet lathe seems to be that bad also. :(
 
jazznpool said:
Hey Brent, my spindle is the same as yours, somewhat cobb rough on the inside. It HAS already been bored by Porper. On the other hand a few friends have older Model B's with spindles that are are as smooth as a baby's behind on the inside. It appears to have been a cost issue to go to the cheaper quality spindle.

Martin
Click to expand...
i dont have a a porper
it's a world war two sheldon
it varies as much as 20/1000ths
i thought that split collets would work ok, but not
there's one sweet spot in the spindle that the collets i made work great
 
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