For pumping nipple balls often use Bicycle pump with a special needle. But it does not matter if it broke or its just not there at hand: with this work well covered by a normal Bicycle nipple off a rubber tube mounted with its threaded shank in the hole of the pump.
Recommend to read
IMPROVE UK-4
Machine UK-4 is still popular among hobbyists and tinkerers. Over the years of its release, home craftsmen invented many devices to improve its performance and broadening the range of...
CARDBOARD GYMNAST
The children enjoy dynamic toys — they moved, jerked, and tumbled. Want to offer exactly this — moving and funny, resembling a gymnast on the horizontal bar. The horizontal bar ...
