DRILL IS THIN AND LONG

To drill the axial bore of small diameter into a long cylindrical part is not so easy even on the machine — drill was almost certainly “will lead”. To gain maybe a simple jig made from a block of aluminium, plastic or solid wood thickness of 15 — 20mm Through hole of the desired diameter is first drilled in the workpiece of conductor, and then 1/3 — 1/2 of the thickness of the reams the hole diameter of the part. Now, inserting into the slot of the conductor part from the reverse side can be drilled in it an axial bore even a hand drill. If the drill is too short, so they can drill through hole, through this conductor, this operation can be carried out in two steps with opposite sides of the part.

 

A. RODIN