- Joined
- Feb 2, 2014
- Messages
- 1,043
I have had several milling machines in the last 25 years and all with an R8 taper. I have been getting by with a 6 piece set of R8 collets but that can cause several problems. Many times I will spot a series of holes on a work piece and then remove it and finish drilling the hole on the drill press. I do have a drill chuck on an R8 collet but some times I didn't plan ahead far enough so the chuck wouldn't fit without raising the head. (round column mill) That usually doesn't work out too well.
I wanted a collet set that would allow me to drill a hole to the recommended thread size (1/4" X 20 uses a #7 drill) with out installing the drill chuck. After some research I found that a set of ER32 metric collets from 2 to 20mm would cover just about every size drill bit I had.
I bought a set of metric collets and a R8 to ER32 adapter. I can now use the Er collets in both of the mills and in my end mill sharpener.
I also wanted to be able to use them in the lathe so while I was waiting for them to come I made a Morse taper 3 blank adapter. I also made a draw bar for the adapter when I used it in the lathe head.
I cut a 1.5mm thread on the outside and a 8 degree internal taper.
Here it is in the tail stock.
I didn't care for the yellow boxes and drawer space is at a premium so I made this rack.
I made room for the R8 collets too. Mounted to the side of the mill.
I don't know why I didn't do this years ago it would have saved me some grief.
R8 adapter, collet nut, collet wrench, and 19 collets were less than $80
Ant body want some nice little yellow boxes?
Thanks for looking
Ray
I wanted a collet set that would allow me to drill a hole to the recommended thread size (1/4" X 20 uses a #7 drill) with out installing the drill chuck. After some research I found that a set of ER32 metric collets from 2 to 20mm would cover just about every size drill bit I had.
I bought a set of metric collets and a R8 to ER32 adapter. I can now use the Er collets in both of the mills and in my end mill sharpener.
I also wanted to be able to use them in the lathe so while I was waiting for them to come I made a Morse taper 3 blank adapter. I also made a draw bar for the adapter when I used it in the lathe head.
I cut a 1.5mm thread on the outside and a 8 degree internal taper.
Here it is in the tail stock.
I didn't care for the yellow boxes and drawer space is at a premium so I made this rack.
I made room for the R8 collets too. Mounted to the side of the mill.
I don't know why I didn't do this years ago it would have saved me some grief.
R8 adapter, collet nut, collet wrench, and 19 collets were less than $80
Ant body want some nice little yellow boxes?
Thanks for looking
Ray