Big laser cutter

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Fab Lab
3D Printing 2D Cutting Misc



Hive13 Equipment
List of All Documented Equipment
Big Laser 01092016.jpg
Owner/Loaner: Hive13
Make/Model: G.Weike LC1512 (google)
Arrival Date: 07/2015
Does it work?: Yes
Certification Needed?: yes
Contact: Fab Lab area warden
Floorplan: 1A
Manual: [[LC1512[1]|Manual]]
Big_laser_cutter.png



WARNING:  Do not look into laser with remaining eye. Pages to do with the Laser Cutter:

Notice

9/12/18 The Big Laser is Working again after a major overhaul including tube & optics replacement. There is a significant increase in cutting power and the lens now has a 127mm focal length which increases the length of the narrow cutting sweet spot. Old files and settings need to be reset for the higher output. Your old speeds and power settings are probably wrong.

Users

The Big Laser is only available to Hive13 members who have been certified on its use & care. To become certified, you need to take the certification class. Contact us about scheduling one.

Note: The list of certified people was WAY out of date. Please notify a trainer to certify, re-certify, etc

Certified Members

  • Will Bauer
  • Tiffany Bell-Horwath
  • Mason Boling
  • Danielle Fraley
  • Kerensa Juniper
  • Dave Lear
  • Brett Pipitone
  • Who will be next?

Trainers

  • Lorin Parker
  • Dave Velzy
  • Ryan Hershey
  • Greg Arnold

To Do

Counter balancing the lid

The pneumatic cylinders on our laser were bad when we received the laser which cause some near accidents when the lid wasn't supported and came crashing down.

Helper struts have been added and now the lid will stay up.

Pic of helper struts
Helper struts

Still crashes down the last few inches. Hold onto the handle and let it down easy. Careful. It's heavy.

Perhaps we can add a closing damper. The handle could use an upgrade. If only we could machine stuff . . . .

Exhaust Fan Update.

With the FabLab move, the Exhaust fan duct improved to properly vent both lasers at the same time. Until further notice use the red/black power cord to plug and unplug the fan.

Work Log

New auto z zeroing sensor (September 2018)

Replacement sensor is a LJ8A3-2-Z/BX NPN NO 3-wire 2mm Inductive Proximity Sensor Switch DC 6-36V housed in a custom aluminum contactor. The sensor is commonly available.

Z-Height Probe with imbedded sensor

The picture on the right shows how the new sensor is mounted. The sensor may be adjusted up and down to zero the focal point a the top surface or mid-plane of the material to be cut.

During the installation of the sensor it was learned that a pull-up resistor of 330K ohm is added in line between the 24v line and the output line.

Laser Wiring Information Table
Laser Side Red Purple Blue
Sensor Side Brown Black Blue
Location Left Center Right
Function 24v Output Ground
pull-up Resistor 330K Ohm n/a

New auto Z Settings February 2017 - THis needs update to the 127mm laser focus.

16.5 is the setting we want to use for Org-OffsetLength in the Easycut 5.3 software. The distance from the top of the material to the point the sensor triggers is 1.114". The OriginOffSetLen setting within the syscfg_biglaser.ini file needs to be set to 16.5