On Saturday, January 22, 2005 at 12:51:46?PM UTC-6, Wayne Lundberg wrote:
Back when I was a practicing Mfg. Eng. at Solar Turbines I did extensive
research into deburring the inside hole made in tubing. I failed to find
anything really earth-shaking.
I'm faced with the problem again in advising a client of mine on how to
deburr the 15 holes he is drilling in 1" od aluminum tubing to create his
telescopic affair for his cargo net for pickup trucks. He bought a neat
deburring tool from McMaster, on my recommendation, and is using it quite
well, but his hand and wrist gets tired after about the 100th hole. He does >> not want to follow the logical step in taking the work to Mexico or China. >> He wants his product to be made in the USA.
Any burr left on the inside of the tube screws up the easy telescoping
movement and scratches the inner tube as well.
Anybody have any proven success with this kind of problem?
I told him this is one reason so many manufacturers have gone to Mexico or >> China because deburring is really one of those pesky problems requiring
human hands. Of course he could do the work on a CNC machine and maybe we
could find a shop to do it but the cost is going to be enormous when he is >> only dealing with a thousand holes a month. Now.
Wayne
Can you pump abrasive slurry through it?
Granted a little late, but something modeled on a brake cylinder
hone might work
"Mike Spencer" wrote in message news:874jjgbsly.fsf@enoch.nodomain.nowhere...
pyotr filipivich <phamp@mindspring.com> writes:
Granted a little late, but something modeled on a brake cylinder
hone might work
I duct-tape one end of a strip of abrasive cloth to a piece of dowel,
wrap the strip around the dowel a few turns in the correct direction
and put the dowel in an electric drill or drill press. Insert dowel
in tube and run the drill. Grit of abrasive and size of dowel
obviously to be chosen to suit requirements.
Perhaps unsuitable for production work but it serves me fine for
various one-offs.
Mike Spencer Nova Scotia, Canada
-------------------------------
I thought about and may have tried winding thin foam with the sandpaper
to maintain pressure as the abrasive wears down. Today at the auto parts store they had sandpaper with grit as fine as 5000.
Granted a little late, but something modeled on a brake cylinder
hone might work
On 9/27/2023 11:27 AM, Jim Wilkins wrote:
"Mike Spencer" wrote in message
news:874jjgbsly.fsf@enoch.nodomain.nowhere...
pyotr filipivich <phamp@mindspring.com> writes:
Granted a little late, but something modeled on a brake cylinder
hone might work
I duct-tape one end of a strip of abrasive cloth to a piece of dowel,
wrap the strip around the dowel a few turns in the correct direction
and put the dowel in an electric drill or drill press. Insert dowel
in tube and run the drill. Grit of abrasive and size of dowel
obviously to be chosen to suit requirements.
Perhaps unsuitable for production work but it serves me fine for
various one-offs.
Mike Spencer Nova Scotia, Canada
-------------------------------
I thought about and may have tried winding thin foam with the
sandpaper to maintain pressure as the abrasive wears down. Today at
the auto parts store they had sandpaper with grit as fine as 5000.
What's that equivalent to in microns ? I have diamond paste ... I
think "W 1" is one micron ? I was intending to use it to lap a loose
roller bearing outer race on a 1939 Harley transmission . It's .0015"
out of round and that causes all kinds of grief .
store they had sandpaper with grit as fine as 5000.
"Snag" wrote in message news:uf1n0p$36ds7$1@dont-email.me...
On 9/27/2023 11:27 AM, Jim Wilkins wrote:
Today at the auto parts
store they had sandpaper with grit as fine as 5000.
What's that equivalent to in microns ? I have diamond paste ... I
think "W 1" is one micron ? I was intending to use it to lap a loose
roller bearing outer race on a 1939 Harley transmission . It's .0015"
out of round and that causes all kinds of grief .
Snag
---------------------------
1/5000" or 0.0002" is 5 microns. I once demonstrated that I could adjust
a 4 jaw lathe chuck by 1 micron to qualify for an optics tech job.
"Snag" wrote in message news:uf1n0p$36ds7$1@dont-email.me...
On 9/27/2023 11:27 AM, Jim Wilkins wrote:
Today at the auto parts
store they had sandpaper with grit as fine as 5000.
What's that equivalent to in microns ? I have diamond paste ... I
think "W 1" is one micron ? I was intending to use it to lap a loose
roller bearing outer race on a 1939 Harley transmission . It's .0015"
out of round and that causes all kinds of grief .
Snag
---------------------------
1/5000" or 0.0002" is 5 microns. I once demonstrated that I could adjust a
4 jaw lathe chuck by 1 micron to qualify for an optics tech job.
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