06-12-2015, 02:46 PM
I am embarassed to say this but I have had a 3-jaw chuck and backing plate blank sitting on my bench for the past 9+ months now and no time to work on it. I have a 8" Vertex Rotary Table that I acquired about 8 or so years ago. I haven't used it much due to what a pain it was to use the mill feature on my previous 3-in-1 machine. However, I decided to finally set it up with a 3-jaw chuck and start using the rotary table a bit more. Last summer I scored an inexpensive 3-jaw from ebay and a blank backing plate to mount the chuck onto my rotary table. It has been sitting on my work bench ever since because I have not had time to machine the adapter plate.
Well, I have a set of handlebar mounts to machine for a customer's bike and I could really use that 3-jaw to cut the radius on the mill. I figured it was time to get the adapter place machined so I could use it for this project and it would be completed and readily available whenever I need it in the future.
I set up the adapter plate in the 4-jaw and dialed it in. I also covered the bed, carriage and as much of the lathe as possible as I hate machining cast iron.
I next faced the backing plate and cut the OD to size. It originally measure 8.3" and I needed to take it down to 8" exactly to match the rotary table diameter.
Once I got it trued and turned down, I flipped it around in the 4-jaw to machine the step to match the back side of the 3-jaw chuck.
Here is the little 6" 3-jaw that will be used on my 8" rotary table.
Mike.
Well, I have a set of handlebar mounts to machine for a customer's bike and I could really use that 3-jaw to cut the radius on the mill. I figured it was time to get the adapter place machined so I could use it for this project and it would be completed and readily available whenever I need it in the future.
I set up the adapter plate in the 4-jaw and dialed it in. I also covered the bed, carriage and as much of the lathe as possible as I hate machining cast iron.
I next faced the backing plate and cut the OD to size. It originally measure 8.3" and I needed to take it down to 8" exactly to match the rotary table diameter.
Once I got it trued and turned down, I flipped it around in the 4-jaw to machine the step to match the back side of the 3-jaw chuck.
Here is the little 6" 3-jaw that will be used on my 8" rotary table.
Mike.