Re: Using nitric acid to remove broken taps or drills from aluminum, comment to the remark
It some most do om a mini is Tap.
Someone can break Tap in mini lathe.
Now what
It is like taking about chuck or some other tooling needs?
In using a mini lathe it something you will need to deal with.? There no sites with just Broken Tap?
Dave?
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Pierre-Raymond Rondelle
6:43am? ?
Hi Mike,
May I make a comment please:
The original subject had nothing to do with the 7x12 mini-lathe group name
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Re: Using nitric acid to remove broken taps or drills from aluminum
I agree with you, Mike
I was a Chemistry major in college and was very careful around all the concentrated (& dilute) acids and bases.??
With care, none are a problem.
Back when I was in aerospace industry. we always passivated the stainless steel, to remove any exess carbon, with nitric acid.? There is a MIL spec for? passivating. It's easy to find.
The layman should always research chemicals and processes, and follow them.? It is safe when ones don't take shortcuts.
ralphie
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Re: Using nitric acid to remove broken taps or drills from aluminum, comment to the remark
This group has posts about everything related to using a minilathe, not just the mechanics of the lathe itself. And that certainly includes drilling and tapping holes with them.??
And there are two kinds of people in this group -- people who've broken a tap and beginners who haven't done it yet. Which group are you in?
Mike Taglieri? On Sat, Mar 16, 2024, 9:43 AM Pierre-Raymond Rondelle via <pierreraymondrondelle= [email protected]> wrote:
Hi Mike,
May I make a comment please:
The original subject had nothing to do with the 7x12 mini-lathe
group name.
That said, since this off-topic wasn't criticized, I (and others)
felt free to diverge from the original thread.
I'm so sorry as well but, in the future, I strongly suggest that the
threads MUST be in line with the group name and I promise I'll
hardly stick to the rule.
Have a nice day. Regards
On 16.03.24 13:00, Miket_NYC via
wrote:
I'm sorry to see that in discussions this group doesn't
ever seem to stay on the subject. This thread started with my
posts using nitric acid lto remove taps and drills from
aluminum.
Then it drifted to the related topic of doing
this with EDM machines, then it drifted to drilling and
tapping and now to helicoils, neither of which is related at
all to the subject.
This doesn't really affect my subject.? I wrote
what I wanted to say about nitric acid and there were several
useful responses, so people who want to learn about that can
see it, and people who want to learn about this in the future
will find it.?
But I feel sorry for people interested in EDM,
helicoils, and the other things being discussed. Those are all
now hidden under a subject line saying the discussion is about
acid, so there's not much chance casual readers will notice
them, now or in the future.??
So you're basically writing careful posts about
these things and, in terms of whether future readers will ever
find them, you might as well be flushing them down the toilet.
?So I wish people would have more discipline
about subject lines. To start a new topic, just change the
subject -- by even a single word. That will automatically
start a new thread with a relevant subject. If more people did
that, this group would be more useful.
Mike Taglieri?
Helicoils
can let down like heads of engines.?
They do make a insert that is solid like allen set screw
that works better.?
Dave?
Pierre-Raymond Rondelle
9:47am? ?
Helicoils are especially made for repairing
threaded holes
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Re: Using nitric acid to remove broken taps or drills from aluminum
No offense, but this reply just shows that you didn't bother to read my post or didn't understand it.? Nitric acid isn't a children's toy, but (like most of the things you do in a machine shop), it's safe enough if you're paying attention.? Also, it does NOT damage aluminum, which was the only thing I was talking about.
Mike Taglieri?
It is on subject? about safely removing a tap.
Nitric acid is not safe to use it can also damage your part.?
Sorry I know it not the answer you wanted. It would nice if they made a low cost EDM .
Dave?
Miket_NYC
5:00am? ?
I'm sorry to see that in discussions this group doesn't ever seem to stay on the subject. This thread started with my posts using nitric acid lto remove taps and drills from aluminum
|
Re: Using nitric acid to remove broken taps or drills from aluminum
Yea I saw this last nite & thought wow we got something here
& if ya have 24 or maybe more hours to remove a broken tap
this could be the ticket . I know my patience & attention span
is much shorter . Gotta say the guy gave it his all though .
animal
On 3/16/24 2:14 PM, chrisser via
groups.io wrote:
toggle quoted message
Show quoted text
This
recently posted on Youtube
Using
Alum to dissolve taps in non-ferrous metals.
Kinda
long and seems to require a lot of equipment and a fair amount
of time.? But might be an option less hazardous than nitric acid
and easier to get the materials.
On Saturday, March 16th, 2024 at
3:50 PM, davesmith1800 <davesmith1@...> wrote:
What month in?
Popular Mechanics Magazine circa 1965 for an EDM "Tap Buster"?
Dave?
|
Re: Using nitric acid to remove broken taps or drills from aluminum
This recently posted on Youtube
Using Alum to dissolve taps in non-ferrous metals.
Kinda long and seems to require a lot of equipment and a fair amount of time.? But might be an option less hazardous than nitric acid and easier to get the materials.
On Saturday, March 16th, 2024 at 3:50 PM, davesmith1800 <davesmith1@...> wrote:
What month in? Popular Mechanics Magazine circa 1965 for an EDM "Tap Buster"?
Dave?
|
Re: Using nitric acid to remove broken taps or drills from aluminum
What month in? Popular Mechanics Magazine circa 1965 for an EDM "Tap Buster"?
Dave?
|
Re: Using nitric acid to remove broken taps or drills from aluminum
Check out Popular Mechanics Magazine circa 1965 for an EDM "Tap Buster" costing about?$10 to build. Scarey and not for the faint of heart! Uses 117 VAC current straight from the wall. Might be deadly but cheap and easy to build!? ?Bill, brave in Boulder CO
Here is lowest-priced EDM machine.
Dave?
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Re: Using nitric acid to remove broken taps or drills from aluminum
Here is lowest-priced EDM machine.
Dave?
|
Re: Using nitric acid to remove broken taps or drills from aluminum
It is on subject? about safely removing a tap.
Nitric acid is not safe to use it can also damage your part.?
Sorry I know it not the answer you wanted. It would nice if they made a low cost EDM .
Dave?
toggle quoted message
Show quoted text
Miket_NYC
5:00am? ?
I'm sorry to see that in discussions this group doesn't ever seem to stay on the subject. This thread started with my posts using nitric acid lto remove taps and drills from aluminum
|
Re: Using nitric acid to remove broken taps or drills from aluminum, comment to the remark
Hi Mike,
May I make a comment please:
The original subject had nothing to do with the 7x12 mini-lathe
group name.
That said, since this off-topic wasn't criticized, I (and others)
felt free to diverge from the original thread.
I'm so sorry as well but, in the future, I strongly suggest that the
threads MUST be in line with the group name and I promise I'll
hardly stick to the rule.
Have a nice day. Regards
On 16.03.24 13:00, Miket_NYC via
groups.io wrote:
toggle quoted message
Show quoted text
I'm sorry to see that in discussions this group doesn't
ever seem to stay on the subject. This thread started with my
posts using nitric acid lto remove taps and drills from
aluminum.
Then it drifted to the related topic of doing
this with EDM machines, then it drifted to drilling and
tapping and now to helicoils, neither of which is related at
all to the subject.
This doesn't really affect my subject.? I wrote
what I wanted to say about nitric acid and there were several
useful responses, so people who want to learn about that can
see it, and people who want to learn about this in the future
will find it.?
But I feel sorry for people interested in EDM,
helicoils, and the other things being discussed. Those are all
now hidden under a subject line saying the discussion is about
acid, so there's not much chance casual readers will notice
them, now or in the future.??
So you're basically writing careful posts about
these things and, in terms of whether future readers will ever
find them, you might as well be flushing them down the toilet.
?So I wish people would have more discipline
about subject lines. To start a new topic, just change the
subject -- by even a single word. That will automatically
start a new thread with a relevant subject. If more people did
that, this group would be more useful.
Mike Taglieri?
Helicoils
can let down like heads of engines.?
They do make a insert that is solid like allen set screw
that works better.?
Dave?
Pierre-Raymond Rondelle
9:47am? ?
Helicoils are especially made for repairing
threaded holes
|
Re: Using nitric acid to remove broken taps or drills from aluminum
I'm sorry to see that in discussions this group doesn't ever seem to stay on the subject. This thread started with my posts using nitric acid lto remove taps and drills from aluminum.
Then it drifted to the related topic of doing this with EDM machines, then it drifted to drilling and tapping and now to helicoils, neither of which is related at all to the subject.
This doesn't really affect my subject.? I wrote what I wanted to say about nitric acid and there were several useful responses, so people who want to learn about that can see it, and people who want to learn about this in the future will find it.?
But I feel sorry for people interested in EDM, helicoils, and the other things being discussed. Those are all now hidden under a subject line saying the discussion is about acid, so there's not much chance casual readers will notice them, now or in the future.??
So you're basically writing careful posts about these things and, in terms of whether future readers will ever find them, you might as well be flushing them down the toilet.
?So I wish people would have more discipline about subject lines. To start a new topic, just change the subject -- by even a single word. That will automatically start a new thread with a relevant subject. If more people did that, this group would be more useful.
Mike Taglieri?
Helicoils can let down like heads of engines.?
They do make a insert that is solid like allen set screw that works better.?
Dave?
Pierre-Raymond Rondelle
9:47am? ?
Helicoils are especially made for repairing threaded holes
|
Re: Using nitric acid to remove broken taps or drills from aluminum
The name of those is time serts. I used them back in the 70s and all through my career. I absolutely despised heli coils.
george
On Friday, March 15, 2024 at 12:36:15 PM PDT, davesmith1800 <davesmith1@...> wrote:
Helicoils can let down like heads of engines.?
They do make a insert that is solid like allen set screw that works better.?
Dave?
Pierre-Raymond Rondelle
9:47am? ?
Helicoils are especially made for repairing threaded holes
|
Re: Using nitric acid to remove broken taps or drills from aluminum
Helicoils can let down like heads of engines.?
They do make a insert that is solid like allen set screw that works better.?
Dave?
toggle quoted message
Show quoted text
Pierre-Raymond Rondelle
9:47am? ?
Helicoils are especially made for repairing threaded holes
|
Re: Using nitric acid to remove broken taps or drills from aluminum
Helicoils are especially made for repairing threaded holes.
On 14.03.24 01:21, Miket_NYC via
groups.io wrote:
toggle quoted message
Show quoted text
after the
tap's loose enough to remove, you could plug the hole and
redrill it.? I've corrected misdrilled holes (sometimes done
by the factory!) by drilling and tapping a larger hole, then
screwing in a bolt with permanent threadlocker or epoxy.?
Then saw it off flush with the surface and you have fresh
metal to drill and tap where you want it.
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Re: Using nitric acid to remove broken taps or drills from aluminum
Here is photo . All had to do was wirer the transformer in 2009. If look close I used a left hand acme thread witch not need but had time.? I also include a vibrator not need but had time .? Dave? 
allen gentz
3:09am? ?
Would like to see the recipe
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My situation was similar - 20 years ago - a small amount of milling in the mini-lathe.
And I have to say my mill is, considering the price, only a little bit better.
--
Lone Tree, Colorado? ?USA
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Re: Using nitric acid to remove broken taps or drills from aluminum
Would like to see the recipe Dave.
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Re: Using nitric acid to remove broken taps or drills from aluminum
Sorry for being a little off subject but this is a lot safer than Using nitric acid .
I do not no of anyone use lathe has not broken a tap.
I will dig out my edm and photograph it was made on a lathe not wood.
Dave?
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Re: Using nitric acid to remove broken taps or drills from aluminum
I uploaded more data on EDM machines. If all you building is just tap removal they simple . I have run a EDM for Automovie Machine? it was simple machine.? It like running a drill press not very fast but remove the taps and bolts.? Here is the schematic on one most I found was about same used a 200 watt 120 light bulb or resistor.?? The dielectric fluid on some was just water.? 
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davesmith1800
Ralph Lehotsky
chrisser