+- MetalworkingFun Forum (http://www.metalworkingfun.com)
+-- Forum: Machining (http://www.metalworkingfun.com/forum-5.html)
+--- Forum: Projects (http://www.metalworkingfun.com/forum-7.html)
+--- Thread: RF-45 Downfeed Lock Knob (/thread-456.html)
RF-45 Downfeed Lock Knob - henryarnold - 06-02-2012
I felt like doing a small project last night so I decided to make a better knob for my RF-45 Style Mill down-feed lock. This knob when tightened allows the fine feed to operate and when loose allows the drill press style handle to operate. The original knob is made of cheap plastic. Here's a photo:
[attachment=1755]
I didn't think to take pictures during the lathe work. I turned the knob from a 1.6" long 3" round piece of 6061 aluminum. After I finished turning and boring the blank, I milled the cutouts around the rim.
[attachment=1756]
Here's a closeup. I made each cutout with a boring bar set to cut a 7/8" radius. The rotary table is turned 60 degrees for each cutout
[attachment=1757]
Here's the finished knob. I used my new Shop Press to press fit a 10mm x 45 mm cap head screw.
[attachment=1758]
My new knob has a nicer feel and also looks better.
[attachment=1760]
RE: RF-45 Downfeed Lock Knob - EdK - 06-02-2012
Henry,
Nice job on the new knob. You've just added another project to my list. That looks like a fun project though.
Ed
RE: RF-45 Downfeed Lock Knob - doubleboost - 06-02-2012
Henry,
That looks a lot better
John
RE: RF-45 Downfeed Lock Knob - DaveH - 06-02-2012
Henry,
Very nice, in fact I think that is rather splendid
DaveH
RE: RF-45 Downfeed Lock Knob - krv3000 - 06-02-2012
(06-02-2012, 02:18 PM)DaveH Wrote: Henry,well dun
Very nice, in fact I think that is rather splendid
DaveH
RE: RF-45 Downfeed Lock Knob - ETC57 - 06-02-2012
Henry,
Love your knob!!!
Nicely done!!
Jerry.
RE: RF-45 Downfeed Lock Knob - f350ca - 06-02-2012
Nice, I never thought of using the boring head to make the grips
RE: RF-45 Downfeed Lock Knob - EdK - 06-02-2012
(06-02-2012, 08:23 PM)f350ca Wrote: Nice, I never thought of using the boring head to make the grips
I thought that was rather clever of Henry. I learned something new from his post.
Ed
RE: RF-45 Downfeed Lock Knob - Highpower - 06-02-2012
(06-02-2012, 12:16 PM)henryarnold Wrote: Here's a closeup. I made each cutout with a boring bar set to cut a 7/8" radius.
Henry,
7/8" radius? On a 3" diameter knob?
Maybe just my eyes playing tricks on me, but they don't look to be that big to me.
RE: RF-45 Downfeed Lock Knob - stevec - 06-03-2012
(06-02-2012, 09:26 PM)Highpower Wrote: Henry,A 3" diameter knob has a circumference of almost 10" and those 7/8"
7/8" radius? On a 3" diameter knob?
Maybe just my eyes playing tricks on me, but they don't look to be that big to me.
radius sectors (not full diameter) are probably around 3/4" across so I'd say, Ya your eyes must be playing tricks on you.
(or mine are
)Or maybe Henry meant 7/8" Diameter?
Oh, never mind
