Shop Made Yo-Yos

Over 6 months ago now I finally finished a pair of yo-yos I made for family friends who gave us a wagon for our kids.  The wagon was a very well made wagon and I wanted to make a special gift for the family in return.  I remembered how much I enjoyed yo-yos when I was a kid so I decided to make up one for each of their 2 girls.

The design is very straightforward.  Essentially it is 2 aluminum halves with a tool steel axle.  I chose to make the bearing / bushing out of some Teflon I had in the shop.   You could easily modify the design to use the very common rolling element bearings that so many yo-yos utilize these days.  The trickiest part of the design is sizing the o-ring that sits in each of the halves.  The size and cross sectional area of the o-ring used determines how easily (if at all) the yo-you will return to your hand.  If you remove the o-ring completely the yo-yo may never return to your hand and probably will require what is called a “binding” trick which causes the yo-yo to recoil its string.  Since I wanted these yo-yos to be easy to use for beginners I sized the o-ring so the yo-yo will return with a easy flick of the wrist.

The project made heavy use of the 5C collet chuck that I previously reviewed.  The chuck worked out very well and the soft 5C collets that I used made the job much easier and quicker than it would have taken using the old 4 jaw standby.

I chose to press in 12 pieces of brass on the outer rim for added mass where it is needed most.  Besides making up 48 pieces of brass for 2 yo-yos the process was very easy.  After the brass was pressed in I cut the outside radii with a custom form tool I made up in the shop.  I also made a video of making the form tool.  You can watch that video here:

Besides the custom form tool for the radii, there were a number of other tools I ground up to make this yo-yo.  The project once again highlights the basic home shop need of being able to grind high speed steel tools.  If I had to purchase all the cutting tools I needed for this project the cost would have been significant.

I also did a full build video of the process.  Many thanks to Megan for recording music for the introduction.

If you are interested in the drawings you can download them here:

Body – Rev 01, Bushing – Rev 01, Axle – Rev 01, Yo-Yo – Rev 01.

 

Home Shop Machinists Podcast – Episode 19 – CAD

In this episode learn that Pretzel sticks are universal and one of the snacks that perhaps we home shop machinists can use to break down modern day barriers.  Or maybe join Max and have some good old fashion Americana Ritz crackers and join the 3 of us talk about CAD – a subject that we could did talk about for hours.

Some of the things we talk about include:

And much more!  You can listen to it here:

or you can download it directly.

Subscribe in iTunes (and please rate us!): https://itunes.apple.com/podcast/home-shop-machinists-podcast/id1180854521

Max’s website: The Joy of Precision and also his Youtube channel:  https://www.youtube.com/channel/UCdMt_havo3BxZJscvRCOGcw Max’s Instagram: https://www.instagram.com/joyofprecision/.  Also be sure to check out Max’s Patreon page: https://www.patreon.com/joyofprecision

Stefan Gotteswinter (our occasional host!) website: http://www.gtwr.de/  and also his Youtube channel: https://www.youtube.com/user/syyl  Stefan’s Instagram: https://www.instagram.com/stefan_gtwr/

Justin’s Youtube channel: https://www.youtube.com/thecogwheel  Justin’s Instagram: https://www.instagram.com/thecogwheel/