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gold separation
[quote]
Which acid did they mean ?
[/quote]
Most likely nitric acid.
[quote]
And the third t ... |
11-5-2004 at 15:18
by: axehandle |
One old trick
is to replace the email addresses, the "Login" text etcetera with auto-generated JPEGs or ... |
11-5-2004 at 15:13
by: axehandle |
abuse of member registration
Pity I'm Perl-but-not-php-savvy!
Otherwise I'd been glad to help. |
10-5-2004 at 17:54
by: axehandle |
NH3O-- Does this exist?
The skill of reading is too much to ask of people in this world. |
10-5-2004 at 17:53
by: axehandle |
experiment?
[quote]
I believe some model rockets used or still used plain hydrogen peroxide as fuel with a cata ... |
10-5-2004 at 17:52
by: axehandle |
Electroforming is useful...
Probably. But it will be a very thin layer of Ag. |
10-5-2004 at 15:33
by: axehandle |
Electroforming is useful...
I see. Well, electroplating is more entizing. Contact a jeweller's supplier and buy some silver ... |
10-5-2004 at 15:18
by: axehandle |
Electroforming is useful...
Silver is (comparatively) cheap. And very malleable. Why not cast it? |
10-5-2004 at 14:11
by: axehandle |
Electroforming is useful...
If you find silver spray, contact me. I'm trying to make a very glittery piece of jewellry for ... |
10-5-2004 at 13:34
by: axehandle |
Possibility of sulphuric acid?
[quote]
lol
so many wrong things i saw..
sorry but h3po4 is not a strong acid
the reac ... |
10-5-2004 at 13:18
by: axehandle |
I2 and Toluene frustrations
[quote]
(Copper in a finely divided state is most conveniantly gained by adding iron (wool) and a d ... |
10-5-2004 at 13:16
by: axehandle |
Strange...
I haven't noticed anything strange --- but I log out manually every 4-7 days. |
10-5-2004 at 13:10
by: axehandle |
Oil for oilbath
There are difficulties involved in all lead substitute ammunition: The propellant has to be adjusted ... |
10-5-2004 at 13:06
by: axehandle |
Electroforming is useful...
Hmm. This has some relevance to one of my projects. I was thinking latex goo (the same that's u ... |
10-5-2004 at 09:01
by: axehandle |
Silver cleaner?
Looks exactly like sulfur. |
10-5-2004 at 07:10
by: axehandle |
Oil for oilbath
Ok, I was probably wrong. Or perhaps, felt threatened, since I do a fair bit of target practice shoo ... |
9-5-2004 at 13:49
by: axehandle |
OK, conclusions.
1) The dehydrated mix of phosphate cement and perlite was the best refractory material I've eve ... |
9-5-2004 at 13:44
by: axehandle |
Possibility of sulphuric acid?
A salt water rheostat is a variable resistor consisting of two electrodes submerged in salt water. T ... |
7-5-2004 at 03:07
by: axehandle |
Some success.
The hard thing is finding the right water ratio, since soaked perlite oversaturates the cement mix w ... |
7-5-2004 at 02:28
by: axehandle |
Metal melting propane furnace construction
[quote]
Take a large motor and put something on the turn shaft that is unevenly weighted, it will v ... |
6-5-2004 at 15:48
by: axehandle |
Vibrator.
To cast this, I'll need a vibrator that can shake the bucket when it weighs about 30kg. Any ide ... |
6-5-2004 at 14:23
by: axehandle |
V2O5 catalyst for H2SO4 production.
Thanks for the experiment report. I'll try to answer some of the questions:
1) Dehydration. ... |
6-5-2004 at 13:44
by: axehandle |
KNO3
[quote]
maybe he just wants kno3 to make 3 grams of black powder with the 3grams of sulfur he has.. ... |
6-5-2004 at 13:22
by: axehandle |
Metal melting propane furnace construction
[quote]
what is wrong with the present refractory?
perlite + fire proof cement which itself could ... |
6-5-2004 at 10:32
by: axehandle |
Melting point apparatus.
[quote]
Axehandle: at least you did not suggest the use of Rheingold. That would have increased the ... |
6-5-2004 at 10:07
by: axehandle |
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