Not so easy to drill a hole in laminated or foamed material. However, if he is able to absorb water — you can use a witty way, received in due time, even the copyright certificate. The trick is that the wetted workpiece of such material you need to pre-freeze. And so the frozen layer will easily succumb to any drilling. V. VLADIMIROV
Recommend to read
WITH A QUICK YAK
All fighter planes, created in OKB A. S. Yakovlev in the years of the great Patriotic war, represent a further development of the Yak-1. Continuous improvement of this machine led to the...
SIMPLE FRONT
If a barrel is poured in the vegetable garden or cistern in the shower — the water level in them will tell you a simple water-measuring device consisting of a Styrofoam float and stuck...
