Problem with Mandrel?

[Princejimuk]

Just started pen turnung and have made 8 pens, come to make my 10th and the wood is turning on my mandrel when I start to work? And yes I have made tight.

 

[alan morrison]

Has the wood come away from the tube? Happens sometimes.

 

[MikeC]

Are the blanks fully trimmed to the length of the tube? If not that could cause the problem.
If the problem persists try turning between centres with some TBC bushes fro Taylors Mirfield.
Mike

 

[Princejimuk]

Thanks Guys wood came away from tube.

 

[Paul-H]

What glue do you use, I guess it's some sort of Superglue

Did you forget to rough the whole brass tube before gluing

A couple of things to watch out for.

If the tube is a snug fit in the blank and you use epoxy the glue may get pushed out when pushing the tube in resulting in a weak bond. If the tube is a snug fit use superglue.

If the tube is a loose fit and you use superglue it will not fill the gap between the tube and the hole, resulting in a weak bond. If the tube is a loose fit use an epoxy.

 

[alan morrison]

Thanks Guys wood came away from tube.

James, the important thing, no matter which glue is used, is to give it sufficient curing time.
If using CA glue, I would think that you would need a couple of hours at least before turning, though some would leave a lot longer.
I only use 2-part epoxy to glue in tubes and allow at least overnight to cure.
Alan

 

[Gadget-UK]

What Alan said, I use 2 part Gorilla Glue.
This One...
Drill and glue up a batch on a Sat Morning ready for the following Saturday Morning
Since I have been doing this I have never had a tube come loose in the blank

 

[Princejimuk]

Thanks for all your help everyone.

 

[Penpal]

I use epoxy like it was a gift from someone