New posts

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.

Reply to thread

Message

The finish problem on the bushing will be being caused on the out side buy no finish turning cycle for any one interested they should be using a G71 roughing cycle then a G70 finishing cycle and the rough on the inside is cause by the only drilling the hole it needs to be either reamed or bored I would bore them if I was them an I would put a tolerance of 6.26 +.03 -.00 and the same tolerance on the tube fit and the concentricity would need to be .03 between the hole and the outside diameter I would also have them made from stainless or titanium I see the best way to achieve this is to have them manufactured in the UK as Taiwan can't hold a tolerance for love nor money. That my two pence worth

Sent from my iPad using Tapatalk

[QUOTE="bellringer, post: 212697, member: 68"] The finish problem on the bushing will be being caused on the out side buy no finish turning cycle for any one interested they should be using a G71 roughing cycle then a G70 finishing cycle and the rough on the inside is cause by the only drilling the hole it needs to be either reamed or bored I would bore them if I was them an I would put a tolerance of 6.26 +.03 -.00 and the same tolerance on the tube fit and the concentricity would need to be .03 between the hole and the outside diameter I would also have them made from stainless or titanium I see the best way to achieve this is to have them manufactured in the UK as Taiwan can't hold a tolerance for love nor money. That my two pence worth Sent from my iPad using Tapatalk [/QUOTE]

Verification