
A simple feeder for small birds can be done literally in minutes, using a tin can and a stick of wood or a suitable diameter of the branch.
Recommend to read
“FIREFLY”
This simple and reliable model was developed in the Chisinau children's club "Firefly" under the leadership of Alexander Pavlovich Marchenko. All modelers-beginners, writes...
C-6: SIMPLICITY AND RATIONALITY
Winter operation of all-terrain vehicles in the northern regions of our country places a number of specific requirements on it. So, to reduce resistance to movement, the machine must have...