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Laser Cutter/Full Spectrum Laser 40W/Unofficial Manual
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==Laser Head== The laserhead has 4 plastic wheels. These attach to an eccentric pin through a small Phillips (crosshead) screw. If you rotate these eccentric pins then it will tighten or loosen against the aluminum X axis rail. These eccentric pins are held in position by a set screw with a hex head 90degrees from the top Philips screw. Remove the setscrew before attempting to adjust the eccentric pins. The eccentric pins need to be adjusted by inserting an extremely short FLAT head screwdriver through the BOTTOM. If you adjust the crosshead screw from on top it will have extremely limited motion for adjustment. Tighten the top crosshead screw then do all further adjustments from the bottom. To remove the pins, turn from the bottom to loosen then push from the bottom to remove. # Loosen the 4 eccentric pins by using the short screwdriver from the bottom. The laserhead will not be clamped to the X axis gantry anymore. # Adjust the top 2 eccentric screws so they that the laserhead is straight with the X axis. Since they are eccentric you want the laserhead platform straight otherwise the belt will be pulled at a angle. # Adjust the bottom 2 eccentric screws so that the laserhead is as loose as possible but all 4 wheels are just barely still rolling. # Insert the 4x set screws with the hex heads back and tighten. Note that by putting the set screws back in it will tighten the eccentric pins slightly so that is why we say adjust as loose as possible but still rolling in step 3. # Test it out and ensure the X axis is not binding during rastering. If you would like you can insert some WEAK thread locking glue on the screws.
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