Hi,
please can you help me ?
i need "snow gold" composition.
thanks
Are you sure it is "snow gold" and not the very beautiful "slow gold" if the latter it has been posted here a few times before, it will come up on a search.
Posted 30 December 2009 - 04:46 PM
Hi,
please can you help me ?
i need "snow gold" composition.
thanks
Posted 30 December 2009 - 05:37 PM
Posted 31 December 2009 - 10:08 AM
Posted 04 July 2010 - 10:29 PM
Posted 04 July 2010 - 10:32 PM
Hi,
i've some twinkling formulas, and i would like to know what'll happen if i use magnalium 200 µm (about 70 mesh) instead of magnalium 250 µm (60 mesh) and 177 µm (80 mesh) ?
i use the occasion to give you the formulas :
twinkling white stars
Magnalium, 80 mesh (treated with potassium bichromate).....25
Ammonium perchlorate..............................60
Barium sulfate....................................15
Potassium dichromate (as a stabilizer)............+5%
twinkling yellow stars
Magnesium, 60 mesh (treated with potassium bichromate).....40
Ammonium perchlorate..............................50
Sodium sulfate....................................10
Potassium dichromate (as a stabilizer)............+5%
thanks and bye
Edited by digger, 04 July 2010 - 10:34 PM.
Posted 05 July 2010 - 12:04 AM
Posted 05 July 2010 - 02:05 AM
Edited by MDH, 05 July 2010 - 02:08 AM.
Posted 05 July 2010 - 10:15 AM
Posted 05 July 2010 - 12:42 PM
"but ensure that the mill is opened to oxygen every fifteen minutes"
with magnalium too ?
and why ?
where did you find your magnalium/magnesium ? my producer only do 200 µm
thanks for the rest
Posted 30 July 2010 - 03:15 PM
Posted 30 July 2010 - 04:01 PM
Posted 30 July 2010 - 04:16 PM
Posted 30 July 2010 - 10:25 PM
as for being hollow, there is very little difference between a solid and a hollow structure, the only real difference is the hollow one is lighter. look a car chassis, H-beams for houses, i think this should be the same for the sphere as long and there no weakness in the outer layer, such as cracks.
Hoop stress
σc = [(pi ri2 - po ro2) / (ro2 - ri2)] - [ri2 ro2 (po - pi) / r2 (ro2 - ri2)]
where
σc = stress in circumferential direction (MPa, psi)
r = radius to point in tube or cylinder wall (mm, in)
pi = internal pressure in the tube or cylinder (MPa, psi)
po = external pressure in the tube or cylinder (MPa, psi)
ri = internal radius of tube or cylinder (mm, in)
ro = external radius of tube or cylinder (mm, in)
maximum stress when r = ri (inside pipe or cylinder)
Posted 05 August 2010 - 04:11 PM
Posted 20 September 2010 - 02:54 PM
Who is the author of this composition. It looks as though it was intended for use with KCLO3 not KCLO4 as there is no chlorine donor in it. Try adding 10% - 15% of parlon to your composition and it it will be transformed.
Yep the velines are generally pretty good in colour saturation except for the blue. (hint 70/30 magnalium helps with the colours). Yes you can bind them with pure alcohol.
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