The British magazine “Practical Householder” reminds readers about the DS one the oldest methods-plan sections using the so-called Egyptian triangle with sides in the ratio 3:4:5. If you make a triangle out of durable nylon twine, combining stretches it with a metal SANB, we will get a reliable and accurate tool for marking angles.
Recommend to read
KEY-RING
Young metallurgists, participants of the exhibition NTTM-78, developed a key for their production needs: screwing graphite electrodes Ø 300 mm electric steel furnaces. However, they...
SHARPEN DRIVE
When using a circular saw with a saw to obtain a smooth cut surface modelers often use so-called "silk" discs, in which the cutting teeth are almost divorced. Sometimes for this purpose...