Re: Magnetic indicator base demagnetizing
THESE? MAGNETIC? SYSTEM? ARE? DIFFICULT? TO REPRODUCE
the mag? have? to? be? in? the? exact position for? his polarity? ?orientation
if? you? mark? both? mag? for? the? orientation?
no problemo?
you? can? made a system? like this? by? position? the mag? in a? special? position? only?
when? you? turn? one? ?the mage? incrise? ? in? the? other possition? the mag? in NUL
jack 47 71
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I have order from LMS? but never take phone.
Good to know they are very helpful on phone?
Thank for review
Dave?
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Re: Magnetic indicator base demagnetizing
I do not know.
I told about when asking questions about rebuilding a magneto back in 1972.
Dave?
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Re: LMS 5000 bed extension
I should of taken more pics.? The only ones I took are of the
control box wiring.
The tap from LMS held up well, but the 2.5mm drill bit didn't.?
Tapping the holes was very easy.? Perhaps using the Tap Magic
EP-Xtra helped.
Yeah, I see some differences in the written instructions and the
video.? I'll sort it out as I continue this project.? Wondering if I
should drill oil holes in the lead screw brackets since my brackets
don't have oil holes.
Stan
On 4/14/24 06:30, Ron Y wrote:
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Heh - wrote Take Pictures but you are already
reassembling. The written instructions are lacking in a few
areas. Watch how the gears go inside the gearbox. Hopefully you
have plenty pf pictures. Make sure you are using good taps, not
the cheap HF stuff. Mine broke after the fourth hole or so.
Watch the video. He does skip a few minor things when
reassembling as he plans on doing future upgrades. I also
changed the bearings since I had mine apart.
Good luck
Ron
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Re: Magnetic indicator base demagnetizing
Why would taking it apart lose most of the charge?
On Sun, Apr 14, 2024 at 2:03?PM davesmith1800 via <davesmith1= [email protected]> wrote: It depends on the magnetic.?
Like a magnetic chuch there most have a charge magnetic.? If take the chuck apart the magnet will loose most of charge.?
Do not buy use magnetic chuck unless check first.?
I only new one guy who did changing in 1970's.? He build his own charging station using a lot of big capacitors.?
Dave?
Roy
Apr 13? ?
I doubt that pulling the magnet would de-magnetize it; the base was probably built by inserting a magnet into the housing
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Re: LMS 5000 bed extension
There are/were lots of discussions about the rear slide plate some time ago. On larger machines, setscrews through the slide plate are a common means of adjustment - on these relatively small machines, adding a filler piece is a better fix. When you get the slop down to a reasonable amount, you'll probably find you need to refine the surface on the underside of the bed.
IIRC, there were some folks who added the old bed to the longer one, with everything mounted on a rigid base.
Roy
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Re: LMS 5000 bed extension
Like photo?
As metric goes I have all taps in inch.?
So I pick a inch tap close to metric thread size.?
Like 6M I use 1/4NC?
Sometimes I have buy a metric? tap so today I 10MM x 1.0MM LH and one 12M tape.?
Dave?
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Re: LMS 5000 bed extension
Thanks all for the replies.
I'm going to take it a little slow reassembling it.? I did install
the rack today and managed to break the LMS 2.5 mm drill drilling
the first hole.? So, I used a #40 drill from my HF 115 piece set.? I
see LMS doesn't include enough screws for the rack. My rack has 5
holes, so I have 4 screws in it. I might be able to find a socket
head M3x10 locally.
Here's a couple of pics.
Stan
On 4/14/24 12:44, davesmith1800 wrote:
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Any photos you could posted?
Dave?
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Congratulations, Johannes, it is always?good to see posts like yours!? ?Bill in Boulder,CO
On Sat, Apr 13, 2024 at 9:40?PM Johannes < johannes@...> wrote: Hi folks.
I have to express my feelings:
After 10 years, nearly everyday in use, my LMS 5200 lathe motor had to be replaced.
Still running, however , noisy.
I order a new one from USA.
Without details:Things happened that shall not happen.
A call to LMS, they had a 4 minutes intern meeting, and I got new parts very quickly and they kindly favored me.
Great thanks to LMS.
/johannes
Mexico
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Re: Magnetic indicator base demagnetizing
It depends on the magnetic.?
Like a magnetic chuch there most have a charge magnetic.? If take the chuck apart the magnet will loose most of charge.?
Do not buy use magnetic chuck unless check first.?
I only new one guy who did changing in 1970's.? He build his own charging station using a lot of big capacitors.?
Dave?
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Show quoted text
Roy
Apr 13? ?
I doubt that pulling the magnet would de-magnetize it; the base was probably built by inserting a magnet into the housing
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Re: LMS 5000 bed extension
Any photos you could posted?
Dave?
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Re: LMS 5000 bed extension
I've done it, and it's a pretty straightforward project.? Just take your time.? I know they say it can be done quickly, but I took my time and did it over 2 days.? The instructions are complete, but I re-read them often.? You'll love the results!? I wound up with two 5" chucks, a 3-jaw self centering and 4-jaw independent.? I removed the safety shield as it was always in the way anyhow,?
I offered the old bed, lead screw and other non-used parts to anyone in this group for free, if they would pay the shipping - they went quickly.
ralphie
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Re: LMS 5000 bed extension
Heh - wrote Take Pictures but you are already reassembling. The written instructions are lacking in a few areas. Watch how the gears go inside the gearbox. Hopefully you have plenty pf pictures. Make sure you are using good taps, not the cheap HF stuff. Mine broke after the fourth hole or so. Watch the video. He does skip a few minor things when reassembling as he plans on doing future upgrades. I also changed the bearings since I had mine apart.
Good luck
Ron
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Hi folks.
I have to express my feelings:
After 10 years, nearly everyday in use, my LMS 5200 lathe motor had to be replaced.
Still running, however , noisy.
I order a new one from USA.
Without details:Things happened that shall not happen.
A call to LMS, they had a 4 minutes intern meeting, and I got new parts very quickly and they kindly favored me.
Great thanks to LMS.
/johannes
Mexico
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Re: Magnetic indicator base demagnetizing
The video referenced above
https://www.youtube.com/watch?v=RUV55lXNBaY
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Re: Magnetic indicator base demagnetizing
I found this youtube video.? At about 13:00 he describes a scratch test to tell if the slug is a real magnet or just a magnetized piece of steel - supposedly the latter can't be removed.
I scratched mine and i'm pretty sure it was a magnet, but I decided to play it safe and cleaned it in place.? Took a big handful of q-tips (don't tell my wife) to get all the gunk out.? Adjusted the stop and it now works great.? Some fine steel wool and simichrome on the rods and they look pretty good.? Cleaned up the light rust on the hardware and touched up with some cold blue and oil. This is a pic from the ebay ad  Here's what it looks like now 
Only downside is I had to get the aluminum label off to get at the adjusting screw and it's pretty bent up.? Even with heat, I couldn't get the adhesive to let go and had to slide a utility knife under it to get it loose.
Surprisingly, it's as strong as my Grizzly chinese stand, which is about a dozen years old.? Doesn't come close to the new ones, but I think it will do the job.
On Saturday, April 13th, 2024 at 8:41 PM, Roy via groups.io <roylowenthal@...> wrote:
I doubt that pulling the magnet would de-magnetize it; the base was probably built by inserting a magnet into the housing. Still, to be safe, you could try softening & flushing out the old grease with a wash bottle filled with a petroleum based solvent, NOT acetone. My preference for things like this is whatever version of mineral spirits is cheapest!?
?<??>
(That's a short version of a horribly long link; you can avoid it by searching for, "wash bottle" & picking the cheapest - it should cost under $2, no need for an over priced one.)
You'll probably also want some non-magnetic tools to help dig the old grease out.
Roy
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Hi All,
After putting it off for way too long; I'm finally getting around to
upgrading my HF 93212 mini lathe with the LMS 5000 16" bed extension.
I have the lathe torn down. Decided to play it safe and put the
parts/screws in ziploc bags and label the bags with a sharpie so I won't
forget what they are. Also checked off each step in the instructions as
I disassembled the lathe.
Any tips/advice before I start Reassembly?? I did slip the carriage on
out of curiosity to see how it fit.? The front is fairly snug, but
there's a noticeable amount of play in the rear.
Stan
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Re: Magnetic indicator base demagnetizing
FYI If pull apart the magnetic may not work.
I just buy new so know what happened to magnetic. I have magnetic basics some over 60 years old the slowly lost there power over years like a magneto.?
There power last about 25 years.?
Good luck
Dave?
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Re: Magnetic indicator base demagnetizing
I doubt that pulling the magnet would de-magnetize it; the base was probably built by inserting a magnet into the housing. Still, to be safe, you could try softening & flushing out the old grease with a wash bottle filled with a petroleum based solvent, NOT acetone. My preference for things like this is whatever version of mineral spirits is cheapest!?
?<??>
(That's a short version of a horribly long link; you can avoid it by searching for, "wash bottle" & picking the cheapest - it should cost under $2, no need for an over priced one.)
You'll probably also want some non-magnetic tools to help dig the old grease out.
Roy
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Re: Magnetic indicator base demagnetizing
I think mrpete222 has a tube on taking them apart
animal
On 4/13/24 4:00 PM, chrisser via
groups.io wrote:
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I picked up an old Mitutoyo magnetic indicator stand on ebay
for a great price.? Has a bit of very light corrosion that I
think I can address pretty easily and even if I can't, it's
still very functional as is.
?
The one big issue was it wouldn't turn off completely.? I have
it partially apart. I think that issue was the limit screw
needed adjustment.? Aligning the magnet manually makes it work
perfectly fine.? So far so good.
The last issue is the inside is full of heavy, sticky old
grease.? i have the knob removed and the insides are gunked up -
I think someone squirted a bunch through the hole on top where
the rod attaches, probably decades ago.? I'm at the point where
I was going to pull the magnet out so I can clean it off, clean
the bore and lightly lube it before putting it back together.
?
But when digging around trying to figure out how to get it
apart, I found a lot of threads on machinist forums suggesting
that pulling the magnet out would demagnetize it.? Right now, it
works pretty well when it's "on" other than the issues above, so
I don't want to kill it.
?
I"ve had newer indicator stands apart and pulled the magnets
out with no issue, but magnets have come a long way.? This is
one of those older indicators where the knob is held in with a
pressed ring, rather than the square plate with two screws under
the label.? I'm guessing early 70s but maybe older.?
The threads I read never really said if they just pulled the
magnet out for a few minutes and then it was dead, or they left
it out for a few days sitting on a metal table or something.
?
You guys ever heard of or experienced this?? I could clean it
all out with solvent with the magnet still in there, but then I
risk getting solvent all over the paint (it does soften slightly
when wiped with acetone) and I probably won't get all the old
grease out that way.
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davesmith1800
Ralph Lehotsky
Johannes
chrisser