A Floating Chucking Reamer-Why not!

LVLAaron said:
I built one today. I used stuff I had around the shop, so the materials aren't ideal. I figured if I like this thing, I can remake any particular part. I used aluminum for the outer collar (mistake) Aluminum is VERY sticky when in contact with steel.

I found some 2 inch round bars of bearing bronze on ebay for a pretty fair price. I'll rebuild the collar if I like this tool.

I did make the mid/rocker plate out of 4140, and man do I hate working with that stuff. I did 4 reamed holes instead of slots. This was mainly because I didn't think far enough ahead with my work holding. :)



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Well done sir!!
 
Janderso said:
Are you going to add the hardened HSS piece that rubs against the ball bearing?
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I planned on using for rifle chambering. I'm going to give it a run as is and see how I like it. If I think I do, I'll cut some bronze for the outer collar and find a friend with a surface grinder for the mid-plate.
 
LVLAaron said:
I planned on using for rifle chambering. I'm going to give it a run as is and see how I like it. If I think I do, I'll cut some bronze for the outer collar and find a friend with a surface grinder for the mid-plate.
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If you were close by, I would grind it for you as I'm sure many of us would.
I hope you found this project to be as rewarding as I did.
This was a real growing experience for me.
 
I got an ER20 collet holder on amazon for 20 bucks - I'm shocked how well it's made, it's beautiful! - So I cut it in half. :)

I got it to be a "machinsts fit" to the "floaty bit" - I think it'll just get the loctite treatment.





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I managed to find a big hunk of bearing bronze on fleabay for 60 bucks. Seemed like a steal. If I'm happy with this widget I'll redo the collar.

currently going through leveling my lathe, but when that's done I'll see how this works!


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Thanks! I still need to figure out the HSS insert on the mid plate. Just hand tightening it a few times has left a dimple in the middle of it from the bearing. 4140 is a bear to machine... I expected a little more out of it
 
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