
Working with a file always takes a lot of time, particularly where its course is restricted: in a deep hole, in a curved channel. Here come to the aid of a power drill. Hold its cartridge needle file with round cross-section or chip of a round file with machined shank: spiral cut works great not only during forward movement but also during the rotation.
I. POPOV, p. Konosha, Arkhangelsk region.
Recommend to read
EVEN ON “FRANTIC”
In our magazine in 1973 (No. 2 cover No. 3, 4, and 6 — description and recommendations) we talked about the boat "TFA" air cushion, created by Swedish designer, Amateur Cumbersom...
RELIABLE SEAL
If the bath tube or sink due to the loose fitting to the drain hole allows water to enter, then restore its tightness is easiest with a rubber fingertip — just need to fit them to the tube.