..............X
D>about 5mm, B>1.5D
D<about 5mm, B>D ..............O
D>about 5mm, B<1.5D
D<about 5mm, B<D |
.............X
D>about 5mm, H>2.5D
D<about 5mm, H>2D .............O
D>about Ø5mm, H<2.5D
D<about Ø5mm, H>2D
D<Ø2.5mm, Hole
...• Products which
have many holes are .....cheaper
those of machine work.
...• In case Hole is
D<Ø0.5mm,
.....machine work is cheaper. |