If the scout can demonstrate the he can use a tool safely and correctly then he should be allowed to use it. I grew up using a welder when I was 12 and all sorts of saws and drills and even cutting torches by age 10.
Eat foods rich in Vitamin B-6: Foods with vitamin B-6 have a number of benefits after you give blood. Your body needs the vitamin to build healthy blood cells and it helps the body break down proteins. Because proteins contain many of the nutrients you need after giving blood, eating vitamin B-6 foods can be helpful.
Most people feel fine after donating blood. A unit of blood (500 ml) is a little more than a pint, and the average adult body contains 10 to 12 pints of blood. Your body makes new blood constantly, and the fluid you give will be replaced within hours. Eating a full meal within four hours before donating will help you feel strong after donating.