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Post by curvycanadian90 on Jan 11, 2023 2:31:27 GMT -5
Can you please explain the wiring harness for your machine like which power supply you bought and what the term is for the water drippy thing lol... I'm making one similar and I have 3 cordless drills that I am converting to DC units. Should the drills be the same model? And are you using bungee cords for keeping the drills pushing on the ball? I have more questions but these are top for now 😀
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jm
having dreams about rocks
Member since October 2015
Posts: 56 
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Post by jm on Jan 12, 2023 1:18:47 GMT -5
Can you please explain the wiring harness for your machine like which power supply you bought and what the term is for the water drippy thing lol... I'm making one similar and I have 3 cordless drills that I am converting to DC units. Should the drills be the same model? And are you using bungee cords for keeping the drills pushing on the ball? I have more questions but these are top for now 😀 Here's a rough wiring diagram.   The power supply I used has 3 separate DC outputs. Each DC output goes into a speed controller, which then goes into the drill. Here's some links to a power supply and speed controller. These aren't the exact ones I used, but they are very similar. Power supply
Speed controller
I don't know what the term for the water drip thing is, other than calling it a water supply. I used the same model for all 3 drills. It's probably not necessary that they be the same, but I went that route so that I could be reasonably sure that they are all turning about the same rpm. I'm using a loop of bungee material to hold all the drills together, but anything stretchy should work. Here's a video of my machine running. |
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jm
having dreams about rocks
Member since October 2015
Posts: 56
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Post by jm on Nov 7, 2023 20:16:37 GMT -5
UPDATE: In case anyone is wondering how this machine has held up... This sphere machine is over 4 years old now and has made well over 200 spheres, ranging in size from 1.5" to 5". It's still running strong on (mostly) original equipment. I did replace one of the drills about a year ago, but it wasn't because of a motor issue. The chuck was worn out from when I first got it and the grinding cup kept slipping in it. I tried replacing the chuck but no matter what I tried I couldn't get it off the drill. At that point I decided it was easier to just replace the whole drill with a spare one I had laying around. Other than that, it's been running strong.  I may build a new sphere machine at some point to handle bigger spheres, since I think a 6" sphere would be the max this one could handle. These smaller drills just wouldn't have the horsepower to spin grinding cups for anything bigger. That's a project for later, though. |
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