Turning Pens without bushes

[broadsea]

Recently I was fortunate enough to get a pen which is not on the market yet. If I were to turn the blank between centres would I still drill and glue in the barrel then place between centres to turn? Thanks in advance for helping

 

[Vic Perrin]

That the way I would do it John. But I would put it on a mandrel between cone bushes.

 

[Bigblackdog]

yes you could do. be careful that you dont splay the tubes by putting too much pressure between the centres.

The alternative is to turn up a set of bushes from delrin.

 

[bellringer]

I would make a set of bushings from delrin

 

[Penpal]

Both methods and variations work fine.

Peter.

 

[woodhacker]

obvious question from me WHATS Delrin?

 

[Bigblackdog]

it is a trade name for acetal, an industrial plastic that machines well.

 

[silver]

Check this link out Peter.

http://www.dupont.com/products-and-...-homopolymer.html?src=gg_dpp-uk-delrin_delrin

As per mark, it's a polymer material that also resists adhesion (glue sticking to it)

 

[Woody]

Hi John there is a set of cone bushes going in the post for you so you can make up your pen on your mandrel all you will need to do is keep mesuring till you get to the right size good luck mate

 

[Bammer]

Check this link out Peter.

http://www.dupont.com/products-and-...-homopolymer.html?src=gg_dpp-uk-delrin_delrin

As per mark, it's a polymer material that also resists adhesion (glue sticking to it)

Ask Grump about the non sticking, we managed to stick it ...

 

[bellringer]

it is a trade name for acetal, an industrial plastic that machines well.

It a trade mark of dupoint it actual compesite name is normal polyacital 66

 

[bellringer]

It a bit of a myth about glue resistance it hard to glue but not impossible

 

[Grump]

Don't ask Grump anything, I am still trying to live down the embarrassment init?

 

[Gizmo3k]

I use a Delrin rod turned down as a pen tube insertion tool - occasionally I have to scrape off a bit of glue, and eventually it will wear out, but then I will just turn another one!

Turning between centres, I don't bother with any bushes these days - for some reason they seem to make my pens go out of round (possibly the hole isn't exactly central on the bushes).

As has already been said, don't apply too much pressure.

 

[silver]

Hi John there is a set of cone bushes going in the post for you so you can make up your pen on your mandrel all you will need to do is keep mesuring till you get to the right size good luck mate

Don't you just love this forum.....

 

[Bigblackdog]

are cone bushes the same type as I have seen used for finishing?

 

[wm460]

Ask Grump about the non sticking, we managed to stick it ...

The Delrin I bought in Aust the CA sticks well to it.