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Homemade capacitor for a power supply
In a word, no.
Commercial electrolytic capacitors have a number of advantages which would be hard ... |
4-8-2010 at 07:30
by: densest |
Removal of Oxygen & Carbon Dioxide from Air (Glovebox Design)
@aliced25 - from what you're saying, it sounds like you're not in the USA. Can you buy liquid nitrog ... |
1-8-2010 at 06:29
by: densest |
Removal of Oxygen & Carbon Dioxide from Air (Glovebox Design)
That's all plausible. Consider it as an engineering question:
What's more fun and more important ... |
31-7-2010 at 23:43
by: densest |
Removal of Oxygen & Carbon Dioxide from Air (Glovebox Design)
Depending on where you live, it may be cheaper to buy nitrogen or argon from a welding supply house. ... |
31-7-2010 at 20:13
by: densest |
Electrolytic DEplating of silver from copper?
The I2/KI method is interesting. Of course, buying iodine is impossible in the US without DEA paperw ... |
31-7-2010 at 11:19
by: densest |
fume hood design
I gave it above - cfm of fan / ( 60 * area of opening in square feet)
|
30-7-2010 at 19:05
by: densest |
Magnesium powder from magnesium pencil sharpener
Uhhhhhhhhh.... Read Lloyd Sponenburgh's book on ball milling. At the end, he gives a very chilling s ... |
30-7-2010 at 18:55
by: densest |
fume hood design
That one looks good. Do the math for your hood - I use an arbitrary value of 1 foot per second of ai ... |
30-7-2010 at 18:50
by: densest |
fume hood design
I wouldn't use it - the motor is inside the air stream. I've had to replace such a fan twice in the ... |
30-7-2010 at 18:46
by: densest |
fume hood design
@bob800 - the blower you referenced will not push against an air filter. If you release corrosive or ... |
30-7-2010 at 18:36
by: densest |
fume hood design
Blowers like the one pictured a few posts above are perfectly suitable for a fume hood. The motor is ... |
30-7-2010 at 18:28
by: densest |
fume hood design
The jewelry maker's hood would probably be OK for HOLDING COLD INORGANIC fumes. It would be hazardou ... |
30-7-2010 at 11:34
by: densest |
Electrolytic DEplating of silver from copper?
@goldsilverpro - are there similar solutions for removing gold from copper? I'm trying to avoid cyan ... |
30-7-2010 at 11:24
by: densest |
fume hood design
Flammable plastics, heat, and solvents -> splattered flaming plastic stuck to your flesh. A very ... |
29-7-2010 at 09:09
by: densest |
Potassium metabisulfite to K2CO3 or KOH
Another name for potassium carbonate is "pearl ash" which is available at potter's supply stores.
... |
28-7-2010 at 16:40
by: densest |
Iodine from seaweed
It's probably not practical... some beaches get covered with smelly decomposing seaweed & it's s ... |
28-7-2010 at 14:33
by: densest |
Starting a small buissness?
If what you want to do is make scents, check out www.libertynatural.com who sell hundreds of oils, e ... |
28-7-2010 at 14:28
by: densest |
Potassium metabisulfite to K2CO3 or KOH
KCl is often sold as potassium-only fertilizer. Since plants absolutely require potassium, you must ... |
26-7-2010 at 13:55
by: densest |
DIY Flashback Arrestor
How much H2 and total gas are you thinking about? I have a 150 mL/min H2 generator. Connecting it to ... |
26-7-2010 at 12:14
by: densest |
Cleaning Glassware W/Acid-base Washes
The sodium/sulfur/oxygen compounds sold for removing rust (hydro/pyro/sub/poly/meta/???/sulfite - ch ... |
21-7-2010 at 13:40
by: densest |
troubleshooting a homemade hotplate
Oooooh! Must have  Thanks!
The same person is selling 1500W stovetop heating elements for $15 ... |
21-7-2010 at 13:27
by: densest |
troubleshooting a homemade hotplate
@peach - Thanks, yes, there are bad days and bad weeks... sometimes bad years.
Agreed, yes, the b ... |
20-7-2010 at 22:34
by: densest |
Cleaning Glassware W/Acid-base Washes
As usual... it depends. What's on the glassware? Organics? Food products? Tars? You really want surf ... |
20-7-2010 at 21:44
by: densest |
DIY Flashback Arrestor
Back in the glory .05 days of cold fusion, catalytic recombination modules intended for sealed lead- ... |
20-7-2010 at 21:32
by: densest |
DIY Flashback Arrestor
Standard welding arrestors work fine with H2, AFAIK. Probably cheaper than a condenser & distill ... |
20-7-2010 at 10:43
by: densest |
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