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Sharpening lathe tools #1: Scotchbrite honing wheel

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Blog entry by Bluepine38 posted 01-10-2014 10:52 PM 989 reads 0 times favorited 1 comment Add to Favorites Watch
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A couple of years ago, I made a honing accessory for the inboard spindle of my Delta Lathe and thought
I would make one for the outboard spindle if it worked. It has worked and I am going to be attempting
some delicate turnings that will require sharp tools. My 1950’s Delta Lathe has 1” 8 TPI right hand threads
on the inboard spindle and 1” 8 TPI left hand threads on the outboard spindle. In my previous blog I used
a coupling nut to make an adapter for the inboard spindle, but when I went to get left hand coupling nuts,
I discovered they were expensive and would have to be ordered. I wanted the honing system now, so I
bought 3 ft of all thread 4 hex nuts and 4 jam nuts all threaded in 1” 8 TPI left hand. I clamped the first
nut in the drill vise on my Shopsmith and drilled three 1/8” holes in three of the hex corners in a triangle
shape.

Measuring the width of 2 nuts and a jam nut I came up with 2-1/4”. I needed 1” of nut to thread onto
the spindle, so I decided to have 1-1/8” of thread inside my adapter to make sure I had clearance. That
meant I would have 1-1/8” of all thread in the other end of the adapter and I would leave 2” of thread
to install my wheel and the lock nut. I cut 3-1/8” off the allthread and threaded a nut, a jam nut and the
drilled nut onto the allthread lining up the hex flats and letting the allthread poke through the drill table I
clamped the nuts and drilled the first hole- using my predrilled nut as a guide-through all three nuts. I
then hammered a 1/8” X 2” tension pin through the hole to lock the three nuts together and drilled the
second and third hole, pinning each hole as it was drilled.

I then took the arrangement to the vise and screwed the allthread out until I had the required 1-1/8” of
thread for the spindle, to the arrangement back to the drill press and drilled a 1/8” hole through the center
of one of flats of the nut holding the all thread and put a tension pin in it locking the allthread in place.
Here is the finished honing wheel in place with my strop wheel on the inboard spindle.

I use this arrangement to put a shaving edge on all my knives. The Scotchbrite wheel was used to
deburr and polish welds in a local assembly shop. I works great as a honing wheel because it gives off
no sparks and removes only enough metal to sharpen the knives and tools and there is very little worry
about overheating the edge and hurting the temper. My Scotchbrite disc is 1/2” wide by 6” diameter
with a 1” mounting hole in a medium grit. I paid about $40 for it 2 years ago with my discount, they
are about $50 now, but it is lasting very well. I will now be able to turn and when my tool gets a
little dull, I can just step to the side sharpen it and keep having fun making shavings, sawdust and
firewood.

-- As ever, Gus-the 76 yr young apprentice carpenter



1 comment so far

View waho6o9's profile (online now)

waho6o9

5306 posts in 1332 days


#1 posted 01-11-2014 02:53 AM

That’s good to know, thanks.

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