The need to sample a semicircular groove often occurs during the manufacture of home-made furniture or the construction of a garden shed. How to do it without the special tool! The figure shows the method of manufacturing such a groove with a conventional circular saw — a workpiece moving along the inclined installed a bar-rail. The tilt angle depends on the width of the groove and determined by the elementary measuring instrument of the type of a parallelogram and the line.
Recommend to read
“Aerodynamic” Tatra cars
After the end of World War I, Czechoslovakia found itself in a unique situation. It inherited a powerful industry from the Austro-Hungarian Empire, including automotive, comparable to...
BACKLIGHT HOUSE NUMBERS
Lighting house number and street name in rural areas - is not an empty whim, but a basic necessity. In dark time of day the postman will be able to deliver a telegram, and RAM service...
