Here's the best reference I've seen so far on rust removal with a
battery charger and washing soda. It is 8 pages long, so get a cup of
coffee before going there. Personally, I printed off a copy for myself.

http://users.moscow.com/oiseming/rustdemo/rustdemo.htm

Pete Stanaitis

spaco wrote:
Here's the best reference I've seen so far on rust removal with a
battery charger and washing soda. It is 8 pages long, so get a cup of
coffee before going there. Personally, I printed off a copy for myself.

http://users.moscow.com/oiseming/rustdemo/rustdemo.htm

Pete Stanaitis

Good article for "batching" jobs i.e. hang in tank, turn on power and
come back tomorrow. The recipe he gives using Sodium Silicate is one
I've used for many years and posted in the drop box in '99. It is
suited to small jobs being cleaned using a "brush" technique in a few
minutes not days.

http://www.metalworking.com/dropbox/...es/E-CLEAN.TXT

http://www.metalworking.com/dropbox/...s/E-CLEAN2.TXT

Ted

I think the sodium silicate is acting to reduce undercutting.

Dan

wrote:
I think the sodium silicate is acting to reduce undercutting.


Could you explain? I don't see why there would be undercutting since
the work piece is the cathode. Detergent action could be a possibility.
I have yet to understand why it works but I'd like to.

I found the formula in library book over 40 years ago. I tried it along
with several others for cleaning prior to plating and found that formula
worked best of those I tried.

Ted

Well maybe to reduce pitting. I said undercutting because I believe
sodium silicate is used when etching to reduce undercutting. I have no
idea of why it does that, but if it tends to reduce the etching action
where the etching is beneath the resist, I think it would also reduce
the etching action is pits.

I will do a little googling and see what I can find. I think the name
used by etchers is dragons blood, but am not sure.

Dan

From a vendor on ebay...
Sodium Silicate, NaSiO3, solution used to deflocculate or disperse clay
slips, slurries, or glazes.

Perhaps it globs up particles so they sink or otherwise get out of the
way. Just using washing soda, the solution got pretty opaque...

Must remember to NOT use stainless steel cutlery next time. So THAT's
what the yellow stuff was... /mark


wrote:
Well maybe to reduce pitting. I said undercutting because I believe
sodium silicate is used when etching to reduce undercutting. I have no
idea of why it does that, but if it tends to reduce the etching action
where the etching is beneath the resist, I think it would also reduce
the etching action is pits.

I will do a little googling and see what I can find. I think the name
used by etchers is dragons blood, but am not sure.

Dan

Is sodium silicate easily available? The beauty of EDR to me is that you can
just use stuff you probably either already have or can get at the grocery store.
-- GWE

Mark wrote:

From a vendor on ebay...
Sodium Silicate, NaSiO3, solution used to deflocculate or disperse clay
slips, slurries, or glazes.

Perhaps it globs up particles so they sink or otherwise get out of the
way. Just using washing soda, the solution got pretty opaque...

Must remember to NOT use stainless steel cutlery next time. So THAT's
what the yellow stuff was... /mark


wrote:

Well maybe to reduce pitting. I said undercutting because I believe
sodium silicate is used when etching to reduce undercutting. I have no
idea of why it does that, but if it tends to reduce the etching action
where the etching is beneath the resist, I think it would also reduce
the etching action is pits.

I will do a little googling and see what I can find. I think the name
used by etchers is dragons blood, but am not sure.

Dan

I have not bought any Sodium Silicate for some time, but it used to be
available in drug stores.

It is also used for casting, so a foundry supply may have it in large
quanities. You mix sodium silicate with sand, pack your molds, then
use a thin tube to inject CO2 which causes the sodium silicate to set.
Sodium Silicate is also known as Water Glass.

Another thing you can do with it is put some in a paper cup and
microwave it. It boils and hardens to form a heat resistant foam.


Dan

On Sun, 19 Jun 2005 06:37:28 -0700, Grant Erwin
wrote:

Is sodium silicate easily available? The beauty of EDR to me is that you can
just use stuff you probably either already have or can get at the grocery store.
-- GWE

Yes. I got mine from McMaster-Carr. As long as I was going through
the motions I got two jugs of it.

http://www.mcmaster.com/

Just type "sodium silicate" (without the quotes) in the "Find" field
and you'll be given three choices, one of which is what you are
looking for.

40% soldium silicate is $12.20 per gallon.

Regards,

Orrin

"Grant Erwin" wrote in message
...
Is sodium silicate easily available?

Phosphate-free TSP (now doesn't that make sense) down the cleaning isle:
100% sodium metasilicate Na2SiO3.

Tim

--
"California is the breakfast state: fruits, nuts and flakes."
Website: http://webpages.charter.net/dawill/tmoranwms

On Sun, 19 Jun 2005 16:29:55 -0500, the opaque "Tim Williams"
spake:

"Grant Erwin" wrote in message
...
Is sodium silicate easily available?

Phosphate-free TSP (now doesn't that make sense) down the cleaning isle:
100% sodium metasilicate Na2SiO3.

I was just as awed when I saw the TV commercial for "Oil-free Oil of
Olay Lotion" half a decade back, Tim. Who ARE these marketeers?


--------------------------------------------
-- I'm in touch with my Inner Curmudgeon. --
http://diversify.com Comprehensive Website Development
================================================== ==========

Larry Jaques wrote:

On Sun, 19 Jun 2005 16:29:55 -0500, the opaque "Tim Williams"
spake:



"Grant Erwin" wrote in message
...


Is sodium silicate easily available?


Phosphate-free TSP (now doesn't that make sense) down the cleaning isle:
100% sodium metasilicate Na2SiO3.



I was just as awed when I saw the TV commercial for "Oil-free Oil of
Olay Lotion" half a decade back, Tim. Who ARE these marketeers?



Then there's "wireless cable" as I've seen advertised around here.

Steve

On Sun, 19 Jun 2005 06:37:28 -0700, Grant Erwin
wrote:

Is sodium silicate easily available? The beauty of EDR to me is that you can
just use stuff you probably either already have or can get at the grocery store.
-- GWE

I found sodium silicate solution at a pottery supply place here in
town (Mnpls).

Don Foreman wrote:
On Sun, 19 Jun 2005 06:37:28 -0700, Grant Erwin
wrote:


Is sodium silicate easily available? The beauty of EDR to me is that you can
just use stuff you probably either already have or can get at the grocery store.
-- GWE


I found sodium silicate solution at a pottery supply place here in
town (Mnpls).
My suspects are Farm and Ranch supplies - Sodium Silicate - water glass -
is used to over-coat eggs. And naturally foundry work...
It is also used to 'glue' slick surfaces together...

Martin

--
Martin Eastburn
@ home at Lion's Lair with our computer lionslair at consolidated dot net
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder

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Most pottery / ceramic shops will have it. It is used to get the
bubbles out faster when casting. Paint stores that carry theartical
supplies will have it. There it is used to make crackle paint. Most
special effect shops will have it. Do a google .

Steve E.


On Wed, 22 Jun 2005 22:02:17 -0500, "lionslair at consolidated dot
net" "lionslair at consolidated dot net" wrote:

Don Foreman wrote:
On Sun, 19 Jun 2005 06:37:28 -0700, Grant Erwin
wrote:


Is sodium silicate easily available? The beauty of EDR to me is that you can
just use stuff you probably either already have or can get at the grocery store.
-- GWE


I found sodium silicate solution at a pottery supply place here in
town (Mnpls).
My suspects are Farm and Ranch supplies - Sodium Silicate - water glass -
is used to over-coat eggs. And naturally foundry work...
It is also used to 'glue' slick surfaces together...

Martin

On Thu, 23 Jun 2005 03:45:55 GMT, Steven E. Eyrse
wrote:


Most pottery / ceramic shops will have it. It is used to get the
bubbles out faster when casting. Paint stores that carry theartical
supplies will have it. There it is used to make crackle paint. Most
special effect shops will have it. Do a google .

Steve E.
I've bought sodium silicate from the drug store. Bartell's as a matter
of fact. There's one just up the hill from you Grant, on 85th going
towards Redmond. It was on the shelf. The last time I bought any was
about 15 years ago though.
Eric

On Wed, 22 Jun 2005 22:02:17 -0500, "lionslair at consolidated dot
net" "lionslair at consolidated dot net" wrote:

Don Foreman wrote:
On Sun, 19 Jun 2005 06:37:28 -0700, Grant Erwin
wrote:


Is sodium silicate easily available? The beauty of EDR to me is that you can
just use stuff you probably either already have or can get at the grocery store.
-- GWE


I found sodium silicate solution at a pottery supply place here in
town (Mnpls).
My suspects are Farm and Ranch supplies - Sodium Silicate - water glass -
is used to over-coat eggs. And naturally foundry work...
It is also used to 'glue' slick surfaces together...

Martin