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Electrical Furnace Contruction - My design and implementation
You'd do better to modify a bench-top induction cooker - you know, the portable sort you plug into t ... |
5-12-2007 at 14:42
by: Twospoons |
More on PbO2 electrodes
You'll find temperature control in a toaster oven to be a lot worse. The thermostats in those thin ... |
2-12-2007 at 18:23
by: Twospoons |
More on PbO2 electrodes
This paper is really just food for thought. Of note : "crackfree films of TiO2 on 316 stainless", t ... |
29-11-2007 at 16:36
by: Twospoons |
Barium Nitrate
If you are after the barium nitrate as a flame colourant, do not use sodium salts in the metathesis. ... |
25-11-2007 at 18:01
by: Twospoons |
neon transformer
Microwave oven transformers (MOT) are not current limited like a neon transformer (NST). So as soon ... |
19-11-2007 at 20:52
by: Twospoons |
Sealing wires inside glass
You might have better luck using the kovar wire from inside an ordinary household lightbulb. This h ... |
12-11-2007 at 12:21
by: Twospoons |
PC PSU to laboratory PSU
If you do have a variac, it will work wonderfully for adjusting the output of an ordinary transforme ... |
8-11-2007 at 19:20
by: Twospoons |
Solid state relays
Put in appropriate transient protection, make sure you use an over-rated ( by about 20%) solid-state ... |
8-11-2007 at 17:01
by: Twospoons |
Lab Equipment Auction (for Kiwis)
You got your eye on anything? I'm kinda keen on the vacuum pump. And maybe a mag/stirrer.
Thanks ... |
5-11-2007 at 13:50
by: Twospoons |
Hydrogen - oxygen flame speed ?
I'm having immense trouble finding numbers for flame speed for a stoichiometric H2/O2 mix. So far t ... |
4-11-2007 at 20:05
by: Twospoons |
Need info on KClO4 propellants
Hard waxes for investment casting can be made by mixing PE with paraffin wax. Adding a little wax t ... |
30-10-2007 at 17:10
by: Twospoons |
Birkeland-Eyde reactor for making nitric acid.
If you are feeling really adventurous (and know what you are doing) you could try a microwave driven ... |
29-10-2007 at 16:46
by: Twospoons |
High Energy Laminated Rocket Propellants
Chemical considerations aside, a better way to isolate hypergolic propellant components might be to ... |
28-10-2007 at 13:18
by: Twospoons |
PC PSU to laboratory PSU
It's really hard to see but it looks like there is fb from +5 AND +12 ? Which to me suggests changi ... |
25-10-2007 at 16:52
by: Twospoons |
PC PSU to laboratory PSU
I find the fancy models tend to be more available for the fancy transistors - low noise RF transisto ... |
25-10-2007 at 12:48
by: Twospoons |
PC PSU to laboratory PSU
In defense of SPICE :
[url=http://bwrc.eecs.berkeley.edu/Classes/IcBook/SPICE/UserGuide/elements_ ... |
24-10-2007 at 19:13
by: Twospoons |
Need info on KClO4 propellants
The evil thing about epoxy is the exothermic cure. A cupful of laminating epoxy will all but catch ... |
23-10-2007 at 16:30
by: Twospoons |
PC PSU to laboratory PSU
[quote][i]Originally posted by Xenoid[/i]
Ahhh.. Twospoons, that was you was it! I had my eye on ... |
22-10-2007 at 17:32
by: Twospoons |
PC PSU to laboratory PSU
It pays to keep an eye on the auction sites (like ebay). I just scored a 0-50V, 0-60A Hewlett Packa ... |
18-10-2007 at 19:07
by: Twospoons |
Need info on KClO4 propellants
There's always NH4NO3 with Mg, and a HTPB binder as outlined in this book..
[url=http://www.spac ... |
18-10-2007 at 17:09
by: Twospoons |
TechShop - Would you use it if there was one near your house?
$30 a day is cheap compared to the cost of the machinery. A halfway decent (chinese) mill would set ... |
18-10-2007 at 13:21
by: Twospoons |
More on PbO2 electrodes
Soap will form insoluble crud with lead ions - the lead salt of the fatty acid. The surfactant is s ... |
16-10-2007 at 18:51
by: Twospoons |
More on PbO2 electrodes
Don't forget that if you add a surfactant you will have to deal with some foaming. |
16-10-2007 at 13:11
by: Twospoons |
More on PbO2 electrodes
1: Photographic wetting agent, from a photographic darkroom supplier, used to prevent waterspots on ... |
15-10-2007 at 19:01
by: Twospoons |
adapting a domestic MW
Any size hole will radiate! You need to get down to roughly 1/20th wavelength for the radiation to ... |
4-10-2007 at 14:15
by: Twospoons |
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