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Acoustic Levitator for cheap
Your webpage just got bookmarked in my 'Random cool stuff' folder. Damn you! Now I have yet another ...
19-8-2017 at 15:02
by: Twospoons
how can I create synthetic diamonds at home. I'm trying to use it for cutting all sorts of metals
It could be the FCC to BCC lattice transition is what is being referred to as 'expanding on cooling' ...
10-8-2017 at 19:31
by: Twospoons
Any ideas for how to control this stirrer motor?
Based on those two chips I'd bet money its just a phase controlled TRIAC or SCR. Same as the basic ...
6-8-2017 at 16:28
by: Twospoons
AC voltage amplification with DC battery
[rquote=486950&tid=75166&author=elementcollector1]
I've since turned to modifying the ESC c ...
4-7-2017 at 13:29
by: Twospoons
Geothermal energy, is that where its at ?
One wouldn't normally try to tap into an active lava flow.
However in my country there's quite a bi ...
2-7-2017 at 21:34
by: Twospoons
DIY microwave reactor with integrated stirrer
[rquote=486740&tid=74547&author=tantric2.718]
at what rate are 12cm microwaves absorbed by ...
1-7-2017 at 15:30
by: Twospoons
Building solar concentrators
[rquote=486739&tid=75097&author=curiosity_cat]

Another idea I had was somehow building a ...
1-7-2017 at 15:17
by: Twospoons
DIY microwave reactor with integrated stirrer
Actually no - a 1/4 wave hole will act as an antenna. Rule of thumb for shielding is no slots or hol ...
5-6-2017 at 13:34
by: Twospoons
DIY microwave reactor with integrated stirrer
Usual technique is to put a microwave absorber at the top of the opening - graphite block, ferrite b ...
4-6-2017 at 15:46
by: Twospoons
Copper plating cast iron skillet
[rquote=483746&tid=74204&author=j_sum1]Well, my suggestion is to leave it as is. ...

Thi ...
21-5-2017 at 20:44
by: Twospoons
Mold killer for air conditiong fan blades & directional slats - keep home healthy!
How about mounting a germicidal UV lamp in the system? Downside is potential for shadows, and UV lig ...
15-5-2017 at 21:12
by: Twospoons
Water >> H2 and 1/2O2 electrolysis
Ok, there are essentially two modes of power supply control: Voltage mode, where the output voltage ...
29-4-2017 at 16:23
by: Twospoons
Water >> H2 and 1/2O2 electrolysis
with 12V you would get about 4x the current as 3V.

12V x 400A = 4800W.

The extra energy is l ...
28-4-2017 at 01:19
by: Twospoons
Today, I march.
Bravo, sir! Bravo!
27-4-2017 at 15:24
by: Twospoons
Today, I march.
I met one once. She'd been down in Antarctica taking ice core samples, and analysing the isotopic co ...
26-4-2017 at 13:05
by: Twospoons
Alternative hobbies that appeal to those with interest in chemistry
For me it was a toss-up between a career in chemistry or a career in electronics. Both were hobbies ...
19-4-2017 at 21:38
by: Twospoons
Microwave didn't/doesn't melt or heat paraffin? - 2oz on high for almost 5 mins!
Some compounds absorb microwaves (2.45GHz) well, and some are virtually transparent. Polypropylene i ...
8-4-2017 at 20:40
by: Twospoons
chrome alum from Cr(III) acetate
Ah, this might be simpler:
CuSO4 : 32 g/100g
Cu acetate : 7.2 g/100g

So combining CuSO4 with Cr ...
3-4-2017 at 14:29
by: Twospoons
chrome alum from Cr(III) acetate
Trying to make some chrome alum ( KCr(SO4)2 ) for crystal growing.
I have a couple of small jars of ...
3-4-2017 at 14:13
by: Twospoons
Oxygen leak detection
Yes, i'd thought of that too. I could possibly flood the equipment with nitrogen or something else i ...
28-2-2017 at 15:26
by: Twospoons
Oxygen leak detection
I'm looking for a method of finding slow leaks in an oxygen gas dispensing system. The leaks I'm try ...
28-2-2017 at 13:38
by: Twospoons
Seasoning Cast iron - What happens in the process?
[rquote=473265&tid=72006&author=RogueRose]

Was this done each time the pan was used or wa ...
30-1-2017 at 19:44
by: Twospoons
Seasoning Cast iron - What happens in the process?
The method I was shown by my nephew (a chef) involves warming the pan, putting in a little oil, then ...
29-1-2017 at 23:08
by: Twospoons
Mylar vs Al Foil IR hear reflectivity efficiency
[rquote=472386&tid=71828&author=Fulmen]

So why do emergency services use it to prevent/tr ...
20-1-2017 at 13:25
by: Twospoons
Mylar vs Al Foil IR hear reflectivity efficiency
I think adding the foil will make bugger all difference, given the low temperatures. Heat transfer b ...
17-1-2017 at 19:06
by: Twospoons
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