Step 2:  Molding the grains
第二步：让燃料成型
　　A bit of propellant has been heating in the toaster-oven at 200 degrees.  After 20 minutes or so, it is nicely soft..
这一点推进剂被烤炉加热到了200度。20分钟之后，就变得很柔软了。　　
DO NOT HEAT PROPELLANT IN A MICROWAVE OVEN!  It will ignite!
不要在微波炉里面来，会着火的。
　　The propellant is recrystallized KN/sucrose to which 1 percent red iron oxide (Fe2O3) has been added.  This gives it a brick-red color, and increases its burn rate.  Kn/dextrose works too, and  does too, although it burns with a little less enthusiasm.
推进剂是KNSU重结晶，1%氧化铁粉末，砖红色，提高喷然比。KNDX也不错，也可以这样玩，但是烧起来没SU爽

　　A small chunk of propellant is cut off, rolled into a slug, and pressed into the longer molding tube with a short stick.  A little more may be added while it is still hot.  The tube is filled to within about 1/8 inch of the top, and pressed down firmly.
一小段推进剂被切下，滚进嵌条，并且用一根短棍推进那个比较长的铸模管。