The shower knob in our guest bathroom was spinning freely, so I needed to do something fast. 

I quickly came up with a design that will work using 123D software (free).  The design and print files are available at:


Step 1:

Life is not perfect.  The hole in my first knob was too small.
This is great !!!. I had the exact problem once and ended up filling the broken knobndle with automotive "Bondo" and letting it cure on the shaft. Still works after 9years.
I repaired my knob using a printed ring based on the idea I got after reading your comment. I did credit you with inspiring the repair ring. <br> https://www.instructables.com/id/3D-Printed-Repair-for-Broken-Faucet-Handle/
Thanks! Its always good to bounce ideas around :-).
You should remove that knob, photograph it and write it up as an instructable. You could enter it in the &quot;Fix It&quot; contest and maybe win a 3D printer . .
That's a good cure! It gives me an idea--I wonder if I could print a custom size &quot;ring&quot; and hold the broken piece inside the original knob. I'm going to give it a try :)
Good job on ya! hard work paid off
Good job on ya! hard work paid off

About This Instructable




Bio: I am an author and a maker. Current projects include Santa's Shop and Little Friend (ultracapacitor powered robot) on hackaday.io. I'm working ... More »
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