Introduction In the past I've discussed making electric matches with which to ignite devices electrically, and the construction of Cremora fireballs which can be impressive additions to any show. I've also looked at the issues involved in thoroughly planning a...
Confused or having a hard time making sense of all the black powder grades? Well, here's how to find the "right" type black powder to use in your fireworks. The manufacturers classify Black Powder types and grain sizes by the...
Introduction This article we'll be looking at the construction of mortar racks from which to fire artillery shells during the show, and some techniques for using various fuses to attach devices together for the display. Mortar Racks Mortars are the...
Resources for Making Black Powder Rockets: Books Videos Chemicals For Making Black Powder Black Powder Rocket Kit Black Powder Rocket Tooling Rocket Tubes Free Black Powder Rocket Project Plans You can make your own black powder rockets. It's easy if...
This chart contains black powder grain sizes of commonly used black powders as well as a comparison of Blasting and Sporting grades. Black Powder Grades & Equivalent Sizes (in mm) Sporting Grades (G) Grain Size (in mm) Blasting Grades (A)...
Partial list of solubility of the most commonly used copper salts. Available copper expressed as molecular percentage is also included. Salt Solubility %Cu Copper Metal Insoluble 100.00 Copper Oxide Insoluble 79.88 Copper Oxychloride Insoluble 59.51 Copper Carbonate Insoluble 57.47 Copper...
Paper Weight(pounds) Thickness(inches) 30 .003 40 .004 50 .005 60 .006 70 .007 90 .009
What does mesh size mean? Figuring out mesh sizes is simple. All you do is count the number of openings in one inch of screen (in the United States, anyway.) The number of openings is the mesh size. So a...
U.S. MESH INCHES MICRONS MILLIMETERS 3 0.2650 6730 6.730 4 0.1870 4760 4.760 5 0.1570 4000 4.000 6 0.1320 3360 3.360 7 0.1110 2830 2.830 8 0.0937 2380 2.380 10 0.0787 2000 2.000 12 0.0661 1680 1.680 14 0.0555 1410...
