I current have a solid 50lb kettlebell that I use. I'm looking to upgrade, but prices for solid kettlebells are very expensive. I saw this adjustable handle on amazon (pic) for about $35 and it can take up to 70 lbs...still not the max weight I was hoping for, but an improvement and ability to adjust down for other kettlebell exercises. Does anyone have any experience with this model or similar low cost ones?
After following Dave's advice and checking out the parts needed via RossTraining, here's my homemade version - cost $15 (I do need to shorten the handles a little)