When processing large surfaces of metal or wood, each master uses to fasten sandpaper to any device. One of the simplest: a piece of wood, girded with a rubber ring This method is convenient because it allows you to quickly change the exhaust a strip of abrasive material by a new one.
Recommend to read
CONVENIENT SOLDERING IRON
The soldering iron is any homebrew. But those who have to deal with modern electro - and radio equipment, this tool is something special. And the requirements for it are quite hard: with...
PROTOTYPE -HOURGLASS
The Romanian magazine "Technium" offers a diagram of the electronic timer operates on the principle of the 5-minute hourglass clock every minute. The indication to carry out the LEDs....
