
If you do not have a special needle for inflating nipple of a volleyball or soccer ball,
take advantage of… ordinary medicine dropper with an elongated spout. Rubber part is a bit cut and put on the pump hose, and the glass type in the pin hole of the ball. Pumped the ball a “needle” much quicker.
N. ZHIRKOV, Lipetsk
Recommend to read
NOW NOT COME OFF
There are many ways to fix the firing pin of the hammer on the wooden handle so that it did not come off during strikes. Here's another simple technique: in addition to the usual wedge...
INSTEAD OF A JACK — A SCREW
"Juice with a jack" — that's what the article was called, published in "Modelist-Konstruktor" No. 4 for 1998. I liked the simplicity and unconventionality of the technical solution...