=====How to adjust the laser focus=====

====Focusable Laser====

Cutting objects in different height, need to readjust the laser focus.


**Step 1**

Put a gray paper at the height of the object.

**Step 2**

Wear protective glasses.

**Step 3**

Turn on the laser (strong).

**Step 4**

Trun the bottom of the laser left and right. Make the laser focus became smaller.
The paper should be burned while the laser focus is smallest.


{{:adjust3.jpg|}}
**Step 5**

Continue and move the paper. See the mark  burned by the laser.
Stop when the mark is small and continuity.

{{:adjust1.jpg|}}


====Focus Fixed Laser====

Using focus stick, make the distance from laser to working object is as long as the stick.

{{ :7w-6.png?nolink |}}