Arron
30th August 2019, 11:19 AM
Hi. Occasional woodturner here.
I’m trying to turn a parallel sided bowl out of this rather large blank.
I’ve turned the outside and the base. My intention was to leave a shallow tenon on the bottom for grip when I flipped it over to do the inside.
Of course when I started I promptly forgot about the tenon.
So now I need a method to fix the piece in the lathe to do the inside.
A complication is that it weighs just short of 3kg.
A further complication is that I’m doing it at a Men’s shed, so at the end of the session I had to demount it from the lathe and remove the faceplate to leave the lathe free for any other user. I marked the orientation of the faceplate carefully, so I’m sort of confident that if needed I can get the faceplate back on and spinning true, but not 100% confident.
My current thinking is to glue a roughly-round piece of timber to the base (to replace the tenon that should have been there). Fix the faceplate back to the base in the original holes and remount. Then turn the newly glued-on timber down to make a tenon. Then demount, remove faceplate and remount with tenon in a chuck. I’ll move the tailstock in and work around it till I have most of the weight off the piece. Then move the tailstock out of the way and finish the inside in the normal way.
That sounds feasible but where I can see it going wrong is 1. Not getting it centered properly again and 2. Removing the tenon will mess up the bottom.
If I had one of those fittings which held the bowl face inward (I think they’re called remounting jaws) so I could clean up the base, then point 2 wouldn’t be a problem. Unfortunately I don’t.
So are there any other ideas out there please?
Cheers
Arron
460511
I’m trying to turn a parallel sided bowl out of this rather large blank.
I’ve turned the outside and the base. My intention was to leave a shallow tenon on the bottom for grip when I flipped it over to do the inside.
Of course when I started I promptly forgot about the tenon.
So now I need a method to fix the piece in the lathe to do the inside.
A complication is that it weighs just short of 3kg.
A further complication is that I’m doing it at a Men’s shed, so at the end of the session I had to demount it from the lathe and remove the faceplate to leave the lathe free for any other user. I marked the orientation of the faceplate carefully, so I’m sort of confident that if needed I can get the faceplate back on and spinning true, but not 100% confident.
My current thinking is to glue a roughly-round piece of timber to the base (to replace the tenon that should have been there). Fix the faceplate back to the base in the original holes and remount. Then turn the newly glued-on timber down to make a tenon. Then demount, remove faceplate and remount with tenon in a chuck. I’ll move the tailstock in and work around it till I have most of the weight off the piece. Then move the tailstock out of the way and finish the inside in the normal way.
That sounds feasible but where I can see it going wrong is 1. Not getting it centered properly again and 2. Removing the tenon will mess up the bottom.
If I had one of those fittings which held the bowl face inward (I think they’re called remounting jaws) so I could clean up the base, then point 2 wouldn’t be a problem. Unfortunately I don’t.
So are there any other ideas out there please?
Cheers
Arron
460511