# Whatever happened to ... axle nuts and axle holes?

**URL:** <https://forums.yoyoexpert.com/t/whatever-happened-to-axle-nuts-and-axle-holes/292871>\
**Category:** General Yo-Yo\
**Created:** [September 12, 2018, 12:16am UTC](https://forums.yoyoexpert.com/t/whatever-happened-to-axle-nuts-and-axle-holes/292871 "2018-09-12T00:16:48Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![codinghorror](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/codinghorror/32/8052_2.png) [@codinghorror](https://forums.yoyoexpert.com/u/codinghorror)\
**Post date:** [September 12, 2018, 7:34pm UTC](https://forums.yoyoexpert.com/t/whatever-happened-to-axle-nuts-and-axle-holes/292871/11 "2018-09-12T19:34:33Z")

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I just realized a full hole all the way through the yo-yo means you have to be careful threading the axle since it could be too far to the “left” or “right” of the yo-yo and thus be not centered.

One Drop had this to say:

> It’s actually easier and more consistent to make it with the hole. Tapping works much better when you can evacuate the chips on the other side. A “blind” tap is more difficult from machining terms.
> 
> But as mentioned, players don’t really like that “belly button” style.

I was thinking that steel on steel threads (with the metal nut) has to be a bit safer for long term longevity, but One Drop went and solved that so cleverly with [their side effects system](https://forums.yoyoexpert.com/t/all-one-drop-side-effects-by-weight/291121). But alu threads must be OK long term because there are still plenty of OD models – and virtually every other yoyo maker – use standard Alu tapped threads.

Also thanks for the reminder @Cannon I forgot Curvy Donut Man is one of the rare recent / new yoyos with the hole! I even have this one and I forgot about the hole!

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