How to make a Center hole for drilling
espana netherlands

It’s so easy to make a center hole, but what is the precision of position.

I shall explane how to make a good position of the center.

1.  Make with a felt pen the surface blue or red.

How to make a Center hole for drilling

2.  Make a cross on your material. OK It’not the right way to do it with a Caliper. This is not a new one. One of the claws of the caliper i have grind sharp.

How to make a Center hole for drilling
How to make a Center hole for drilling

3.  Feel with the point of the centerpons that you are in the center of the two lines.

How to make a Center hole for drilling

4.  Hit the centerpons gentle with a hammer. So now you have a little hole.

How to make a Center hole for drilling

5.  Look with a magnifying-glass that the point is in the middle of the cross

6.  When the point is not in the middle of the cross you must correct it.
     When the point is under the cross , you must put the centerpons diagonally       opposite.

How to make a Center hole for drilling
How to make a Center hole for drilling

7.  When the point is  in the middle of the cross. Place the centerpont straight and hit it hard. Now you are ready to drill. When it’s not in the middle you must repeat point 5 and 6 until its ok.