• Thanks for visiting The Penturners Forum today.

    There are many features and resources that currently you are unable to see or access, either because you're not yet registered, or if you're already registered, because you're not logged in.

    To gain full access to the forum, please log in or register now. Registration is completely free, it only takes a few seconds, and you can join our well established community of like-minded pen makers.

Bowl done a wobbly

hawkeyefxr

Full Member
Joined
Jan 8, 2015
Posts
373
Location
Yateley Hants
First Name
ken
I was turning a piece of Rowan that has a fair amount of rot in it, it also has some small cracks as well. I 'treated' the rot and cracks to three sessions of CA and left it to go off.
While it was mounted on the chuck screw and only the outside finished, it ran true. I swapped it round and held it on a tenon in the chuck, I then hollowed out the inside of the bowl and have left it at about a 1/4 thick wall thickness. My trouble is this seems to have relieved stress in the wood and the outside is no longer round. It is quite noticeable when you look at the wall thickness.
Would i be best to leave it or try truing it up, i'm thinking i maybe chasing and impossible ending.
What do you think. I don't want to run the risk of breaking it as the wood markings are something else.
 

Penpal

Grand Master
Joined
May 26, 2013
Posts
25,340
Location
Canberra AUSTRALIA
First Name
Peter
Out of round is fine ,next time be more patient and wait awhile. All the best with it mate,hard to visualise without pics.

Peter.
 

Dalboy

Executive Member
Joined
Mar 20, 2014
Posts
7,679
Location
Kent
First Name
Derek
If wood is still green or even not fully dry then you need to turn the outside and reverse on the same day straight after completing the outside as even an hour it can move depending on the wood type.

Or the next best thing is to rough turn and leave it which will allow for movement then turn to the final size but you will need to make sure you leave it 10% or better 15% oversize to allow for that movement.

If like you it has cracks then after filling/gluing you will still need to skim the outside again to remove any glue from the surrounding area as it could stain the wood. I know it is a bit late now to do any of the above but worth thinking about for next time.

Trying to sort the problem out with a thinish wall thickness can lead to very thin walled bowl so may be put it down to a learning curve.
 

hawkeyefxr

Full Member
Joined
Jan 8, 2015
Posts
373
Location
Yateley Hants
First Name
ken
Well i have finished my wobbly bowl, Bill Mooney helped out with very useful advice (thank you Bill for your help). Unfortunately it came out of the remounting jaws as i was turning off the foot, it snagged and came out and marked the rim and base. A shame as the wood is quite something, still onwards to the next project.

20170604_163339.jpg

20170604_163404.jpg

20170604_163451.jpg
 

Bill Mooney

Blind old git
Grand Master
Joined
Aug 16, 2014
Posts
10,997
Location
County Durham
First Name
Bill
I was glad to help Ken. It's a shame you got a snatch & it come out of the chuck, it certainly looks a nice piece of timber & worth trying to save.
 

Dalboy

Executive Member
Joined
Mar 20, 2014
Posts
7,679
Location
Kent
First Name
Derek
Well done on a save shame about the catch and damage afterwards. And well done Bill
 

hawkeyefxr

Full Member
Joined
Jan 8, 2015
Posts
373
Location
Yateley Hants
First Name
ken
That looks good I may well get some of that as I still have some wood left in the same condition.

The banged up pot is now residing in the kitchen for key to live in though the wife is trying to find another use for it.
Behind me now, in the shed making sawdust and chippings again :thumbs::thumbs:
 
Warning! This thread has not had any replies for over a year. You are welcome to post a reply here, but it might be better to start a new thread (and maybe include a link to this one if you need to).
Top