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Thread: Laser Speeding up on Certain parts of the Job

  1. #1
    Join Date
    Mar 2014
    Location
    Ankeny Iowa USA
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    2,481

    Laser Speeding up on Certain parts of the Job

    I think this is only time I have asked a controller / software question. I am using LaserCad 7.36 and I have one file and its the same thing either Imported as a BMP or DFX. One small part of the graphic a Star with Text in the middle when it goes to engrave the top part of the Star the laser head goes so very fast, its almost a blur.

    The rest of the project engraves normally??? Yes it may speed up a bit on other small areas but on the top of this Star the laser overruns the edges of the graphic and it looks pretty bad. To make this even worse its a wife project!!!

    The JPG I am going to try to UP Load is a Draft version, ignore the rest of the cr@ppy engraving.

    StarCropped.jpg
    Retired Guy- Central Iowa. , Ray Fine 20w Galvo Fiber laser , LightObject 40w CO2. MakerGear M2 3D Printer. Qe60+ Vinyl cutter.

  2. #2
    acceleration setting is out of wack Bill, in short distances it is trying to speed up and slow down too quickly
    Poof! and just like magic the shop keeper dissappeared

  3. #3
    Join Date
    Mar 2011
    Location
    Olalla, WA
    Posts
    1,407
    Probably it is not actually speeding up but since the distance it has to travel is so small it covers that distance in a very small amount of time.

    One way to get around it is to engrave it as a bitmap, but in "output direct" mode - where white is 0 power and black is max power. That will force the engraving head to cover the full distance of the image even though the laser won't be firing.
    Shenhui 1440x850, 130 Watt Reci Z6

  4. #4
    Join Date
    Mar 2014
    Location
    Ankeny Iowa USA
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    2,481
    Thanks for the suggestions, will try later on. Right now I am warming the shop up to 62 degrees. Yes its winter in Iowa!

    I just wanted to add, this project engraves perfectly with my Ray Fine galvo fiber machine but I am using it so little I would like to move it out (sell) to make room for a CNC router.
    Last edited by Bill George; 12-08-2017 at 10:49 AM.
    Retired Guy- Central Iowa. , Ray Fine 20w Galvo Fiber laser , LightObject 40w CO2. MakerGear M2 3D Printer. Qe60+ Vinyl cutter.

  5. #5
    Join Date
    Mar 2014
    Location
    Ankeny Iowa USA
    Posts
    2,481
    Well I changed the Engraving User setting ACC from 15000 to 7000. Thanks Dave and others who replied.
    Attached Images Attached Images
    Retired Guy- Central Iowa. , Ray Fine 20w Galvo Fiber laser , LightObject 40w CO2. MakerGear M2 3D Printer. Qe60+ Vinyl cutter.

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