Since Jim brought up my end mill sharpening fixture in another thread
I thought I'd update .
Everything is finished except a pin wrench to tighten the collet nut
. I used the inside threads in my 5C collets because of tight space and
the nut is down in a hole . I spent yesterday afternoon setting up the
RT and drilling the index holes in the collet holder . 12 holes which
will let me sharpen 2, 3, 4, and 6 flute end mills . Thinking about it
now it would have only needed 4 more holes to do 8 flute , but I don't
have any so I guess that's moot .
The second go-round with the fixture base went much better than the
first . I started with a larger block , and milled all the angles after
I machined the big hole on the lathe . The bigger block makes for a much
more stable tool with more gripping surface in the vise . I also got the mandrel pieces to mount my grinding disc machined this past week . I
used my mandrel shaft from the gear cutters , with new parts to adapt
the 1.25" hole in the disc with the .863" lower shaft . The upper shaft
is .750" since that's the biggest collet my R8 spindle will accept (and
I haven't attempted an R8 mandrel shaft yet) . I may need to get a
diamond dresser , I think I have about .001 runout on the face . Not bad
but probably not quite good enough . We'll see .
--
Snag
"You can lead a dummy to facts
but you can't make him think."

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On 4/23/2023 10:58 AM, Snag wrote:

  Since Jim brought up my end mill sharpening fixture in another thread
I thought I'd update .
  Everything is finished except a pin wrench to tighten the collet nut
. I used the inside threads in my 5C collets because of tight space and
the nut is down in a hole . I spent yesterday afternoon setting up the
RT and drilling the index holes in the collet holder . 12 holes which
will let me sharpen 2, 3, 4, and 6 flute end mills . Thinking about it
now it would have only needed 4 more holes to do 8 flute , but I don't
have any so I guess that's moot .
  The second go-round with the fixture base went much better than the
first . I started with a larger block , and milled all the angles after
I machined the big hole on the lathe . The bigger block makes for a much
more stable tool with more gripping surface in the vise . I also got the mandrel pieces to mount my grinding disc machined this past week . I
used my mandrel shaft from the gear cutters , with new parts to adapt
the 1.25" hole in the disc with the .863" lower shaft . The upper shaft
is .750" since that's the biggest collet my R8 spindle will accept (and
I haven't attempted an R8 mandrel shaft yet) . I may need to get a
diamond dresser , I think I have about .001 runout on the face . Not bad
but probably not quite good enough . We'll see .

Just grab the "shock" adjust tool for your Go Dog Robyn engine powered
yard cart.

I only half joke. I actually use a tool like that on one of my collet
chucks.

--
Bob La Londe
CNC Molds N Stuff


--
This email has been checked for viruses by AVG antivirus software.
www.avg.com

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On 4/23/2023 1:07 PM, Bob La Londe wrote:

On 4/23/2023 10:58 AM, Snag wrote:

   Since Jim brought up my end mill sharpening fixture in another
thread I thought I'd update .
   Everything is finished except a pin wrench to tighten the collet
nut . I used the inside threads in my 5C collets because of tight
space and the nut is down in a hole . I spent yesterday afternoon
setting up the RT and drilling the index holes in the collet holder .
12 holes which will let me sharpen 2, 3, 4, and 6 flute end mills .
Thinking about it now it would have only needed 4 more holes to do 8
flute , but I don't have any so I guess that's moot .
   The second go-round with the fixture base went much better than the
first . I started with a larger block , and milled all the angles
after I machined the big hole on the lathe . The bigger block makes
for a much more stable tool with more gripping surface in the vise . I
also got the mandrel pieces to mount my grinding disc machined this
past week . I used my mandrel shaft from the gear cutters , with new
parts to adapt the 1.25" hole in the disc with the .863" lower shaft .
The upper shaft is .750" since that's the biggest collet my R8 spindle
will accept (and I haven't attempted an R8 mandrel shaft yet) . I may
need to get a diamond dresser , I think I have about .001 runout on
the face . Not bad but probably not quite good enough . We'll see .

Just grab the "shock" adjust tool for your Go Dog Robyn engine powered
yard cart.

I only half joke.  I actually use a tool like that on one of my collet chucks.

The tool for the outside collet nuts is a semicircle with a tab at
the far end to engage the hole in the nut ... very much like the shock adjusting tool for a motorcycle or ATV ... but it won't work here . The
only access to the collet nut is the face , which I have drilled 2 holes
in . Kinda like the nut on your angle grinder 'cept it's solid .
--
Snag
"You can lead a dummy to facts
but you can't make him think."

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"Bob La Londe" wrote in message news:u23s5j$3tehf$3@dont-email.me...

On 4/23/2023 10:58 AM, Snag wrote:

Since Jim brought up my end mill sharpening fixture in another thread I thought I'd update .
Everything is finished except a pin wrench to tighten the collet nut.

Just grab the "shock" adjust tool for your Go Dog Robyn engine powered
yard cart.

I only half joke. I actually use a tool like that on one of my collet
chucks.
Bob La Londe
CNC Molds N Stuff

--------------------------
HF sells an adjustable pin spanner. 3/16" steel welding rod is stiff enough
to bend into a durable one.

I've made several spanner wrenches from 1/8" flat stock with the ends bent
down to fit radial slots. The custom 5C closer nut that I made with a
centering hole to grind S&D bits in my endmill fixture has 4 slots and a matching wrench. They are small enough to finish carefully and add to the portfolio of my work that I took to job interviews. Their bare steel proved that they weren't bought. Much of what I had done for others couldn't be mentioned.

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