# Mk1 Mechanics - Yoyo design - Part 10, why not fingerspin? **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [June 4, 2021, 2:12pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731 "2021-06-04T14:12:12Z")\ **Posts on this page:** 13\ **Page:** 3
**Author:** ![Mattwilkes84](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mattwilkes84/32/151109_2.png) [@Mattwilkes84](https://forums.yoyoexpert.com/u/Mattwilkes84)\ **Post date:** [January 13, 2022, 11:46am UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/41 "2022-01-13T11:46:02Z")
Well awesome! Looking forward to this! ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [April 22, 2022, 2:04am UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/42 "2022-04-22T02:04:20Z")
There have been some production delays, but I’ve been sent at the very least a photo of some of them assembled. ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/3/f/b/3fb9300ee08be9c8cff878b0bf709bc2f62cb560.jpeg) This is a project for sharing, so you get to see the blurry photos, too! ---
**Author:** ![JEA86](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jea86/32/288088_2.png) [@JEA86](https://forums.yoyoexpert.com/u/JEA86)\ **Post date:** [April 22, 2022, 2:11am UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/43 "2022-04-22T02:11:09Z")
Man that looks amazing ---
**Author:** ![hobbygod](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobbygod/32/120997_2.png) [@hobbygod](https://forums.yoyoexpert.com/u/hobbygod)\ **Post date:** [April 22, 2022, 2:35am UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/44 "2022-04-22T02:35:00Z")
I’m sure they will be done soon Mark! Love that colorway! ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [May 26, 2022, 1:11pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/45 "2022-05-26T13:11:21Z")
These are finally done and on their way to the MK1 home office! ---
**Author:** ![Yoyogeek15](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyogeek15/32/187634_2.png) [@Yoyogeek15](https://forums.yoyoexpert.com/u/Yoyogeek15)\ **Post date:** [May 26, 2022, 1:13pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/46 "2022-05-26T13:13:33Z")
Yes finally !!! The wait is almost over !!! I can feel it 🤩 ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [June 3, 2022, 12:40pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/47 "2022-06-03T12:40:23Z")
![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/2/2/0/220a85cb612cb5a355c2c61fb150b0a9730627a6.jpeg) Got the big box on Tuesday. Planning on testing this weekend, also working on another video for the design series that documents this part of the process. ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/7/4/f/74fc361a8d3b0170f174070adb55cff682f44455.jpeg) Desaturated to save some colorway reveals for later! ---
**Author:** ![hobby\_master](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobby_master/32/145533_2.png) [@hobby\_master](https://forums.yoyoexpert.com/u/hobby_master)\ **Post date:** [June 3, 2022, 2:25pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/48 "2022-06-03T14:25:54Z")
So if everything is all set and assembled and packaged, what is the testing? Just curious what actual goes into testing, i guess i will have to wait for the final installment of video series ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [June 3, 2022, 2:27pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/49 "2022-06-03T14:27:41Z")
I have to test and inspect each one before packaging them. They go into an Mk1 box with a string and a sticker. ---
**Author:** ![Xanadu](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/xanadu/32/84910_2.png) [@Xanadu](https://forums.yoyoexpert.com/u/Xanadu)\ **Post date:** [June 3, 2022, 8:45pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/50 "2022-06-03T20:45:08Z")
Yay! I’m excited! This will be my birthday yo-yo this year (August). ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [June 24, 2022, 8:42pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/51 "2022-06-24T20:42:37Z")
[![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/c/0/7/c071893105e4040b0e809397df9f45f3f9829be2.jpeg "Mk1 Mechanics Part 9: Spyglass Release") ](https://www.youtube.com/watch?v=TtubGFe_-KE) That was fun. I’ll probably make another series like this someday. Available tonight at YoyoExpert 🙂 [New bi-metal release from MK1 - The SPYGLASS!](https://forums.yoyoexpert.com/t/new-bi-metal-release-from-mk1-the-spyglass/359124) ---
**Author:** ![Yoyogeek15](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyogeek15/32/187634_2.png) [@Yoyogeek15](https://forums.yoyoexpert.com/u/Yoyogeek15)\ **Post date:** [June 25, 2022, 12:54am UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/52 "2022-06-25T00:54:45Z")
Finally its here !!! Im crying with happiness right now 🥲 ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [September 27, 2022, 7:34pm UTC](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731/53 "2022-09-27T19:34:07Z")
[![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/9/f/2/9f250d4e929a1ae693afe89d1395eca27c2dbf13.jpeg "Mk1 Mechanics Part 10: Why not Fingerspin?") ](https://www.youtube.com/watch?v=3GrRVuWdepc) Quick 15 minute discussion about fingerspin design elements. There’s a good reason why they aren’t used on every yoyo design - I go over why and talk some numbers in this video. The short version is that you have to add a lot of center weight to a yoyo to get a good centering slope. A design can either just accept the weight, remove weight elsewhere, shorten the axle considerably, or change the design considerably. I usually like to think of a mass “budget” when designing something - there’s some upper limit to total weight that I consider depending on overall dimensions and intent. Sometimes, the desired moment of inertia is easy to hit within a budget, and that’s when I look at fingerspin elements. Other times, the finger spin is a key part of the design, and everything else is molded around it. [Previous page](https://forums.yoyoexpert.com/t/mk1-mechanics-yoyo-design-part-10-why-not-fingerspin/339731.md?page=2)