Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Old February 11th 17, 03:49 AM posted to rec.crafts.metalworking
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Default Timesaver lapping abrasive

Great stuff, Timesaver lapping abrasive. "Guaranteed not to continue
to cut". This week I had two instances to use it. The first was when I
tried to thread new nuts onto the shaft of an old (probably 1940s
vintage) Baldor grinder. The new nuts would not fit. I measured the
pitch diameter of the 1/2-13 threads and they were oversize. The nuts
that came with the ancient grinder were larger than normal 1/2-13
across the flats. .937 while normal 1/2-13 nuts are .750 across the
flats. The nut threads were also quite oversized because the fit was
quite loose on the grinder shaft. So I mixed some of the Timesaver
stuff with a little oil and lapped the new nuts to the threads. Only
took about 15 minutes to get a nice fit. Then today working on a DoAll
vertical bandsaw that had been converted from a band filer I ran into
a problem. The bar that holds the blade guides and slides up and down
would not slide easily. The guide for it, when bolted tight to the
saw, would warp slightly. So I used the same stuff I mixed earlier and
lapped the pieces together. Now the bar slides easily and smoothly
without being sloppy. I love the Timesaver Lapping abrasives. They
don't imbed, break down fast into a finer abrasive, and eventually
stop cutting. Good stuff Maynard.
Eric

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Old February 11th 17, 04:47 AM posted to rec.crafts.metalworking
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Default Timesaver lapping abrasive

On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive

I see it for $50 per pound on Ebay. Where do you get it?

Paul
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Old February 11th 17, 06:32 PM posted to rec.crafts.metalworking
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Default Timesaver lapping abrasive

On Fri, 10 Feb 2017 19:47:14 -0800, Paul Drahn
wrote:

On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive

I see it for $50 per pound on Ebay. Where do you get it?

Paul

Greetings Paul,
It's made by Micro Surface Corp. in San Jose, CA. I bought the 8ea. 3
oz. can kit from Newman Tools. Here's a link:
http://www.shopnewmantools.com/colle...ucts/test-kits
The test kit is $208.00, which seems high but I bought my kit over a
decade ago, have used it many times and still have most of the stuff
left. It doesn't take much to lap stuff in and it has saved me tons of
money over the years because it gets used in my business.
Eric
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Old February 11th 17, 07:19 PM posted to rec.crafts.metalworking
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Default Timesaver lapping abrasive

On Fri, 10 Feb 2017 19:47:14 -0800
Paul Drahn wrote:

On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive

I see it for $50 per pound on Ebay. Where do you get it?


It looks like McMaster carries it too:

1 lb. 5lb.

Available Grits Each Each
For Soft Metals
80, 120, 220, 320 4781A4 $26.79 4781A5 $118.10
For Hard Metals
40, 80, 220, 320 4781A6 $26.79 4781A7 $118.10

https://www.mcmaster.com/#polishing-compounds/=16b6pqk

--
Leon Fisk
Grand Rapids MI/Zone 5b
Remove no.spam for email

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Old February 11th 17, 07:38 PM posted to rec.crafts.metalworking
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Default Timesaver lapping abrasive

On Friday, February 10, 2017 at 10:47:22 PM UTC-5, Paul Drahn wrote:
On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive

I see it for $50 per pound on Ebay. Where do you get it?

Paul


$9.00 for a 3-oz. jar from Micro Surface. Here's the Yellow grade. The others should be selectable from the choices on the webpage.

https://www.ws2coating.com/yellow-la...-and-aluminum/

IIRC, it's mostly silica or glass, at least for the hard (green) version made for ferrous metals. If you remember engine valve lapping compounds from 50 or more years ago, they were ground glass for the same reason. It resists embedding in cast iron valve seats.

--
Ed Huntress


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Old February 12th 17, 05:29 PM posted to rec.crafts.metalworking
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Default Timesaver lapping abrasive

On Sat, 11 Feb 2017 14:19:04 -0400, Leon Fisk
wrote:

On Fri, 10 Feb 2017 19:47:14 -0800
Paul Drahn wrote:

On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive

I see it for $50 per pound on Ebay. Where do you get it?


It looks like McMaster carries it too:

1 lb. 5lb.

Available Grits Each Each
For Soft Metals
80, 120, 220, 320 4781A4 $26.79 4781A5 $118.10
For Hard Metals
40, 80, 220, 320 4781A6 $26.79 4781A7 $118.10

https://www.mcmaster.com/#polishing-compounds/=16b6pqk


Or try http://tinyurl.com/j6aurtu $3.66/10g, because who needs a
full pound of lapping powder?

--
Give me the luxuries of life.
I can live without the necessities.
--anon
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Old February 12th 17, 08:53 PM posted to rec.crafts.metalworking
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Default Timesaver lapping abrasive


"Larry Jaques" wrote in
message ...
On Sat, 11 Feb 2017 14:19:04 -0400, Leon Fisk
wrote:

On Fri, 10 Feb 2017 19:47:14 -0800
Paul Drahn wrote:

On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive
I see it for $50 per pound on Ebay. Where do you get it?


It looks like McMaster carries it too:

1 lb. 5lb.

Available Grits Each Each
For Soft Metals
80, 120, 220, 320 4781A4 $26.79 4781A5 $118.10
For Hard Metals
40, 80, 220, 320 4781A6 $26.79 4781A7 $118.10

https://www.mcmaster.com/#polishing-compounds/=16b6pqk


Or try http://tinyurl.com/j6aurtu $3.66/10g, because who
needs a
full pound of lapping powder?

--
Give me the luxuries of life.
I can live without the necessities.
--anon


I've often wondered how this lapping powder would
work on say, a '66 GM 225 V-6 crankshaft. Use it
to fine tune the clearances all at once. Solvent clean
ofterward. Anyone try this? ;) phil k.

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Old February 12th 17, 09:55 PM posted to rec.crafts.metalworking
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Posts: 460
Default Timesaver lapping abrasive


"Phil Kangas" wrote in message
news

"Larry Jaques" wrote
in message
...
On Sat, 11 Feb 2017 14:19:04 -0400, Leon Fisk
wrote:

On Fri, 10 Feb 2017 19:47:14 -0800
Paul Drahn wrote:

On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive
I see it for $50 per pound on Ebay. Where do you get it?

It looks like McMaster carries it too:

1 lb. 5lb.

Available Grits Each Each
For Soft Metals
80, 120, 220, 320 4781A4 $26.79 4781A5 $118.10
For Hard Metals
40, 80, 220, 320 4781A6 $26.79 4781A7 $118.10

https://www.mcmaster.com/#polishing-compounds/=16b6pqk


Or try http://tinyurl.com/j6aurtu $3.66/10g, because
who needs a
full pound of lapping powder?

--
Give me the luxuries of life.
I can live without the necessities.
--anon


I've often wondered how this lapping powder would
work on say, a '66 GM 225 V-6 crankshaft. Use it
to fine tune the clearances all at once. Solvent clean
ofterward. Anyone try this? ;) phil k.

Wouldn't the abrasive just get embedded in the insert?
That's not good... sorry i posted the question. phil k.

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Old February 13th 17, 01:30 AM posted to rec.crafts.metalworking
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Posts: 1,748
Default Timesaver lapping abrasive

On Sun, 12 Feb 2017 15:55:43 -0500, "Phil Kangas"
wrote:


"Phil Kangas" wrote in message
news

"Larry Jaques" wrote
in message
...
On Sat, 11 Feb 2017 14:19:04 -0400, Leon Fisk
wrote:

On Fri, 10 Feb 2017 19:47:14 -0800
Paul Drahn wrote:

On 2/10/2017 6:49 PM, wrote:
Timesaver lapping abrasive
I see it for $50 per pound on Ebay. Where do you get it?

It looks like McMaster carries it too:

1 lb. 5lb.

Available Grits Each Each
For Soft Metals
80, 120, 220, 320 4781A4 $26.79 4781A5 $118.10
For Hard Metals
40, 80, 220, 320 4781A6 $26.79 4781A7 $118.10

https://www.mcmaster.com/#polishing-compounds/=16b6pqk

Or try http://tinyurl.com/j6aurtu $3.66/10g, because
who needs a
full pound of lapping powder?

--
Give me the luxuries of life.
I can live without the necessities.
--anon


I've often wondered how this lapping powder would
work on say, a '66 GM 225 V-6 crankshaft. Use it
to fine tune the clearances all at once. Solvent clean
ofterward. Anyone try this? ;) phil k.

Wouldn't the abrasive just get embedded in the insert?
That's not good... sorry i posted the question. phil k.

Greetings Phil,
The yellow label stuff is for lapping soft metals in just the kind of
application you describe. I have lapped in many babbit bearings using
Timsaver lapping compound. Mix the stuff with oil according to the
instructions and apply through oil hole if the bearing has one or
apply to bearing shells and assemble the bearing. The abrasive will
not embed into the soft metal but will instead lap it. Conventional
lapping compound, like the Clover stuff, will embed in the softer
metal and lap the harder metal. Timesaver works opposite in that it
will not embed and will lap the softer metal.
Eric
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Old February 13th 17, 02:01 AM posted to rec.crafts.metalworking
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Posts: 460
Default Timesaver lapping abrasive


wrote in message
On Sun, 12 Feb 2017 15:55:43 -0500, "Phil Kangas"
wrote:

I've often wondered how this lapping powder would
work on say, a '66 GM 225 V-6 crankshaft. Use it
to fine tune the clearances all at once. Solvent clean
ofterward. Anyone try this? ;) phil k.

Wouldn't the abrasive just get embedded in the insert?
That's not good... sorry i posted the question. phil k.


Greetings Phil,
The yellow label stuff is for lapping soft metals in just
the kind of
application you describe. I have lapped in many babbit
bearings using
Timsaver lapping compound. Mix the stuff with oil
according to the
instructions and apply through oil hole if the bearing has
one or
apply to bearing shells and assemble the bearing. The
abrasive will
not embed into the soft metal but will instead lap it.
Conventional
lapping compound, like the Clover stuff, will embed in the
softer
metal and lap the harder metal. Timesaver works opposite
in that it
will not embed and will lap the softer metal.
Eric


Ok, that's good to know. Thanks for the input, eih? ;)



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