I thought about the design of this product for about a year before deciding to make this video. Frankly, I love how this design allows for the conversion from Dumbbell to Kettlebell to Plate Pin. This extendable design allows for a great space & money saver.

Here is the shopping list (Home Depot January 2021 prices) so that you can make your OWN.

Keep in mind that this is a shopping list for ONE dumbbell. I imagine that you will want to make at least two of them - so for EACH dumbbell you will need one floor flange, nipple, handle, cap, etc.

However, there are two drawbacks (depending on your viewpoint) to my current “Mullet” design:

1. The Dumbbell will rotate if everything is not flush and tight. However, that may be something that you DO WANT. In fact, rotating dumbbells are “a thing,” and in fact, pay people a premium to have rotating dumbbells as opposed to standard “fixed” dumbbells.

   That being said, if you do not want them to rotate - as long as you keep everything flush there is no rotation. So - keep it all tight and flush (use 1” washers to the fullest extent possible to achieve this). Further, I found the wider the handle, the less rotation I experienced. Also - rubber handles that rest against the weight will also reduce rotation (i.e., Fat Gripz).

   Therefore, the following handles is what I would recommend to use to minimize rotation (in order from Best to Worst: Fat Gripz (store Bought), DIY Fat PVC Handles, DIY 1” EMT Conduit (metal) Handles, and DIY 1” PVC Handles.

   I may experiment with using a rubber gasket/washer and gluing them to the ends of the DIY handles.

2. Since the 1” handles fit easily on the 1/2” nipple (Fact: 1” handles will not fit on 3/4” nipples), this also means that the handles do slightly “move” while exercising (e.g., there is a “click” when conducting movements).

   I am currently experimenting with some design improvements to correct this minor design flaw. The solution seems obvious: make the interior of the 1” Handles more narrow….right? But how? There are many ways this could be done (e.g., duct tape, glue, etc inside the handles to make them fit more tightly)…but what is the BEST way? OR…am I way off, and the solution is something completely different…?

I will be making a future video aimed at solving this problem - so please HELP ME solve this problem!.

If you Build this project and want to brag about it, please use the #DesignBuildLift hashtag so that I can feature your amazing creation on my social media to help inspire others!