- Joined
- Aug 22, 2012
- Messages
- 4,116
I needed a 1/2' 13 tpi left hand thread nut for the treadmill motor that I'm intending to use in place of the original one on my lathe.
I dont have an internal threading tool small enough for a hole that size so I checked out the cost of a tap on line.
Hmmmm, I dont think so at $139 AU + shipping.
I decided to cut the threaded part off the treadmill fly wheel as I wont be using it.
I mounted it vertically in the little vertical slide, used a degree wheel to get the 6 sides and went at it with a 16mm end mill.
A few passes back and forth and we have 6 sides.
A quick clean up in the lathe to remove the sharp corners and we have a usable nut.
I am a little concerned regarding its strength but its only used to keep the cog wheel from working its way off the shaft so I'm hoping that will be strong enough.
I dont have an internal threading tool small enough for a hole that size so I checked out the cost of a tap on line.
Hmmmm, I dont think so at $139 AU + shipping.
I decided to cut the threaded part off the treadmill fly wheel as I wont be using it.
I mounted it vertically in the little vertical slide, used a degree wheel to get the 6 sides and went at it with a 16mm end mill.
A few passes back and forth and we have 6 sides.
A quick clean up in the lathe to remove the sharp corners and we have a usable nut.
I am a little concerned regarding its strength but its only used to keep the cog wheel from working its way off the shaft so I'm hoping that will be strong enough.