Have a small bench grinder, specifically for grinding tungstens, and as it
time to replace to wheels, wonder what would be most suitable for this job?
Would a diamond resin wheel, intended for sharpening lathe tools, be better
than conventional stones perhaps?
Whatever you do, remember that tungsten is nasty stuff when inhaled. So
don't get right in there and snort it. But, you will pick up some in just
the regular grinding process at arm's length. Run a fan or a vacuum to
reduce your exposure.
I've been grinding them for years, and apparently, there isn't anything
wrong with me with me with me with me ............
All the health hazards I have ever heard of related to tungsten grinding
are from the thoriated variety.
To the original poster, as long as you grind the tunstens with the grind
marks running lenghtwise on the tungsten, I don't think a fine stone
would make a noticable difference over the normal cheapo wheel.
To quote from the site you googled
"You are not likely to experience any health effects that would be related
to exposure to tungsten or tungsten compounds."
From the MDS sheet that came with my tungsten grinder, says the danger is
dust from thoriated tungsten, and grinding dust in general. (not tungsten in
general) Its not a good idea to breath any grinding dust. Likewise don't
breath fumes from welding with thoriated tungsten, or for that matter any
Of course if one looks, you can find someone that will say anything you want
to do is dangerous.
"Diamond Jim" wrote
I flintknap. That is where a person takes raw materials and makes
projectile points and tools, like the ancients did.
Obsidian, a volcanic glass, is a very popular material due to its low
hardness factor, sharpness, and ease of working. It was also a favorite of
Some prominent nappers have developed silicosis just from the dust that
working with small amounts of obsidian creates, both from the material, and
from the silica grinding wheels used for shaping.
Near my home, there is an old mining town called Delmar. Huge mills ground
ore to a pulp, and the town was covered with silica dust. The average time
a man could work in the mines was three months before he was down with
silicosis so bad he couldn't work. The town was called "The Widomaker" by
Tungsten isn't that bad of an element. Thoriated tungsten is worse. But
combine it with a silica grinding wheel, and plant your face a foot from it,
and you have a bad situation. Yes, I know people have done it for years,
and the literature says that there isn't a lot of danger. So, if something
kills you only a little at a time instead of all at once, is that less
Actually Ken it is more like 9:30 pm February 13th, 1945, when the RAF
started fire bombing a city with no military targets to speak of, and know
to be packed with refugees. Ever hear of Dresden? Most there, weren't killed
by the bombs but by the aftermath, the fire storms that started later that
Ahhhhh, but there was one big difference. (You say "people" in your post
which implies civilians). Civilians were the target in Dresden. It hasn't
been proved that civilians were the target of depleted uranium in Iraq and
Afghanistan. Far more civilians were killed in Dresden than the total number
of military and civilians deaths in Iraq and Afghanistan.
Oh by the way, didn't the UK forces fire a shot or two in Iraq? They use
depleted uranium munitions also. In fact they were the ones that pioneered
the use of depleted uranium, both in aviation as counterweights and in
weapons as armor and projectiles.
I wouldnt attempt in any way to deny the obvious atrocitys committed by the
UK, in many parts of the world.
However WW2 is not in any way comparable to attacking the people of a
largely defenceless third world country, with the primary objective of
taking control of their oil reserves.
I use a yard sale grinder for grinding tungstens.
For new and badly messed-up electrodes, I use a medium-course
silicon carbide wheel (the green kind). This roughs the point on.
For polishing, I use a 120 grit aluminum oxide wheel.
Always grind with the tungsten pointed up, so the grinder marks
are in line with the electrode (longitude, not latitude lines).
Move the tungsten across the face of the wheel while you grind
or you will wear grooves into the wheel.
Don't grind any soft metals like aluminum, copper, bronze, etc.
on the wheels. Preferably, use the wheels only for tungsten--
although steel and stainless are not that bad.
Don't breath the dust--it's not healthy.
Fatally flawed basic assumption. Therefore the rest of your post is
"Considering the events of recent years,
the world has a long way to go to regain
its credibility and reputation with the US."