531,851 active members*
2,608 visitors online*
Register for free
Login
Results 1 to 3 of 3
  1. #1
    Registered
    Join Date
    Jul 2012
    Posts
    13

    Uneven engraving mystery...

    Hello again...

    I have a mysterious issue that I cannot figure out. Any advice we be greatly appreciated.

    I am "engraving" the paint off of anodized aluminum alloy panels to create patterns and images.
    I am running into a problem where the output is uneven especially if the engraving takes more than 5-10 minutes to complete.
    I get random striping off and on throughout the piece (please see photo).
    I found that if the banding starts and I pause the engraving and then re-start it the burn is clean again for a few minutes.
    When it is banding it looks as though the laser is less bright on the surface.
    This suggests to me a possible power issue, but what kind I don't know.

    Attachment 330814

    Has anyone seen anything like this?
    The example was engraved at a speed of 100mm/s at 50% on a 40w chinese co2 laser.

    Thanks!

  2. #2

    Join Date
    Nov 2020
    Posts
    1

    Re: Uneven engraving mystery...

    Hello. I faced the same problem. Tell me, did you manage to solve it? If so, how?

  3. #3
    Registered
    Join Date
    Jan 2008
    Posts
    922

    Re: Uneven engraving mystery...

    Your piece may be heating up causing the striping

Similar Threads

  1. Engraving on uneven surface (OAR/Paddle face)
    By Minora72 in forum General WoodWorking
    Replies: 2
    Last Post: 07-08-2016, 06:24 AM
  2. PROBLEM - Uneven engraving from left to right
    By Lunder in forum General Laser Engraving / Cutting Machine Discussion
    Replies: 3
    Last Post: 12-13-2015, 11:33 PM
  3. GADJ - Tool for Engraving Uneven Surfaces
    By jblakey in forum G-Code Programing
    Replies: 1
    Last Post: 04-24-2014, 01:04 AM
  4. Uneven traven
    By CEStanley in forum Benchtop Machines
    Replies: 2
    Last Post: 12-23-2012, 05:09 PM
  5. Engraving and uneven surfaces
    By phatjap in forum DIY CNC Router Table Machines
    Replies: 8
    Last Post: 04-21-2010, 01:11 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •