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Posted by on April 18, 2006, 6:44 am
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Hello all:
FWIW, some time ago I ordered some rare-earth ring magnets from Lee
Valley:
http://www.leevalley.com/hardware/page.aspx?c=2&p=42348&cat=3,42363
Got a few of the 1" dia rings and the cups to hold them as shown on the
page. The cup has a countersunk hole for mounting.
Lately I've been very annoyed with my el-cheapo-brand magnetic
indicator base, but was unwilling to pay for a quality base. Over the
weekend I found one of the ring magnets in its cup (once in the cup it
will never come out...), reamed out the hole by hand for a few moments,
and slid a 1/4 x 20 x 3/4" long FH screw through the hole. (Picking the
shavings off the magnet gives a new definition to "fun.")
Unscrew the magnetic base from my old indicator holder, toss it in the
trash. Saw off the stud that had screwed into the holder, drill and
tap that rod for 1/4 x 20. Screw on the new rare-earth-magnet base.
It holds much better than the old base did, but just grab the rod and
tilt it a bit, and the base comes unstuck from the lathe. As a bonus
it's not as big and bulky as the old base was. The downside is that I
still have to pick shavings off the base, but I can live with that.
I'll just learn to machine only aluminum and plastic....<grin>
Best -- Terry
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Posted by Grant Erwin on April 18, 2006, 7:03 am
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prfesser@hotmail.com wrote:
> Hello all:
>
> FWIW, some time ago I ordered some rare-earth ring magnets from Lee
> Valley:
> http://www.leevalley.com/hardware/page.aspx?c=2&p=42348&cat=3,42363
>
> Got a few of the 1" dia rings and the cups to hold them as shown on the
> page. The cup has a countersunk hole for mounting.
>
> Lately I've been very annoyed with my el-cheapo-brand magnetic
> indicator base, but was unwilling to pay for a quality base. Over the
> weekend I found one of the ring magnets in its cup (once in the cup it
> will never come out...), reamed out the hole by hand for a few moments,
> and slid a 1/4 x 20 x 3/4" long FH screw through the hole. (Picking the
> shavings off the magnet gives a new definition to "fun.")
>
> Unscrew the magnetic base from my old indicator holder, toss it in the
> trash. Saw off the stud that had screwed into the holder, drill and
> tap that rod for 1/4 x 20. Screw on the new rare-earth-magnet base.
>
> It holds much better than the old base did, but just grab the rod and
> tilt it a bit, and the base comes unstuck from the lathe. As a bonus
> it's not as big and bulky as the old base was. The downside is that I
> still have to pick shavings off the base, but I can live with that.
> I'll just learn to machine only aluminum and plastic....<grin>
>
> Best -- Terry
>
Make a "shower cap" for your base by slipping a plastic sandwich bag over it.
When you take off the base, just pull off the plastic, inverting it over the
chips, then empty out the chips in the trash and put the plastic back over the
base. If "shower cap" isn't macho enough, call it a "condom" .. :-)
GWE
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Posted by Rex B on April 18, 2006, 9:52 am
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Grant Erwin wrote:
> prfesser@hotmail.com wrote:
>> Hello all:
>>
>> FWIW, some time ago I ordered some rare-earth ring magnets from Lee
>> Valley:
>> http://www.leevalley.com/hardware/page.aspx?c=2&p=42348&cat=3,42363
>>
>> Got a few of the 1" dia rings and the cups to hold them as shown on the
>> page. The cup has a countersunk hole for mounting.
>>
>> Lately I've been very annoyed with my el-cheapo-brand magnetic
>> indicator base, but was unwilling to pay for a quality base. Over the
>> weekend I found one of the ring magnets in its cup (once in the cup it
>> will never come out...), reamed out the hole by hand for a few moments,
>> and slid a 1/4 x 20 x 3/4" long FH screw through the hole. (Picking the
>> shavings off the magnet gives a new definition to "fun.")
>>
>> Unscrew the magnetic base from my old indicator holder, toss it in the
>> trash. Saw off the stud that had screwed into the holder, drill and
>> tap that rod for 1/4 x 20. Screw on the new rare-earth-magnet base.
>>
>> It holds much better than the old base did, but just grab the rod and
>> tilt it a bit, and the base comes unstuck from the lathe. As a bonus
>> it's not as big and bulky as the old base was. The downside is that I
>> still have to pick shavings off the base, but I can live with that.
>> I'll just learn to machine only aluminum and plastic....<grin>
>>
>> Best -- Terry
>>
>
> Make a "shower cap" for your base by slipping a plastic sandwich bag
> over it. When you take off the base, just pull off the plastic,
> inverting it over the chips, then empty out the chips in the trash and
> put the plastic back over the base. If "shower cap" isn't macho enough,
> call it a "condom" .. :-)
>
> GWE
You beat me to it. Also, your air blowgun will knock chips off a magnet
quite well. Just be careful where you send them.
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Posted by on April 18, 2006, 1:28 pm
Please log in for more thread options Grant, Rex, thanks for the suggestions! I will go out to the shop and
put a wrap of polyethylene over the magnet.
I'll also try the blowgun, though these rare-earth magnets are pretty
strong. A colleague bought some to play with. He held two of 'em a
couple of inches apart and let 'em go. Slammed together so hard that
he had magnet chunks.....
Best -- Terry
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Posted by Rex B on April 18, 2006, 2:13 pm
Please log in for more thread options prfesser@hotmail.com wrote:
> Grant, Rex, thanks for the suggestions! I will go out to the shop and
> put a wrap of polyethylene over the magnet.
>
> I'll also try the blowgun, though these rare-earth magnets are pretty
> strong. A colleague bought some to play with. He held two of 'em a
> couple of inches apart and let 'em go. Slammed together so hard that
> he had magnet chunks.....
Yeah, those things are amazing strong. I keep a couple of dime-sized
ones on the gear cover of my 9" Logan to hold the chuck keys. Air will
blow the chips off them, no problem. You just have to watch you don't
blow the magnet out the door into the dirt ;)
I also use them to hold things like the inlet vent registers on my
fireplace heatilator. After years of trying to use screws into the brick
and mortar, I stuck a couple of rare-earth magnets on the corners, and
pop them in place. Works great.
I have some more, including some pea-sized ones. Anybody else got
an innovative use for them?
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>
> FWIW, some time ago I ordered some rare-earth ring magnets from Lee
> Valley:
> http://www.leevalley.com/hardware/page.aspx?c=2&p=42348&cat=3,42363
>
> Got a few of the 1" dia rings and the cups to hold them as shown on the
> page. The cup has a countersunk hole for mounting.
>
> Lately I've been very annoyed with my el-cheapo-brand magnetic
> indicator base, but was unwilling to pay for a quality base. Over the
> weekend I found one of the ring magnets in its cup (once in the cup it
> will never come out...), reamed out the hole by hand for a few moments,
> and slid a 1/4 x 20 x 3/4" long FH screw through the hole. (Picking the
> shavings off the magnet gives a new definition to "fun.")
>
> Unscrew the magnetic base from my old indicator holder, toss it in the
> trash. Saw off the stud that had screwed into the holder, drill and
> tap that rod for 1/4 x 20. Screw on the new rare-earth-magnet base.
>
> It holds much better than the old base did, but just grab the rod and
> tilt it a bit, and the base comes unstuck from the lathe. As a bonus
> it's not as big and bulky as the old base was. The downside is that I
> still have to pick shavings off the base, but I can live with that.
> I'll just learn to machine only aluminum and plastic....<grin>
>
> Best -- Terry
>