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Type: Posts; User: ELaser

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  1. Re: Boxford / Gravograph LS900 Laser - Frustrating Purchase. Faulty. What would you d

    The tube is just a glorified light bulb, it doesn't make any decisions, run energy through it, it fires, don't run energy through it it doesn't fire.

    Yours is firing when it should not, different...
  2. Re: HAVE YOU LASER ENGRAVED OR CUT MIRROR - ACRYLIC / GLASS ? PLS SHARE YOUR EXPERIEN

    Do it all the time, nothing to it at all, just always do it from the rear and leave the protective film on the optical side of the mirror acrylic until the job is done.. use plenty of air ...
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    Re: Which Laser cutter to buy for a beginner?

    Yeah, but there is a grain of truth in the analogy......

    actual beam power + optics gets you spot size and watts delivered per square metre, provided you can get say a million watts per square...
  4. Re: New 60W Chinese Laser Cutter. How thick should it be able to cut?

    I just checked my settings and with a 4" lens (which makes for lower power density) I cut 6mm MDF @ 12 mm/sec and 70/75 watts

    Drop that power by 25% for a 2.5" lens.

    *GOTTA* have good air...
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    Re: Which Laser cutter to buy for a beginner?

    Follow up to myself

    re the illustrator files that "do not work"

    my definition is the file as sent had one job taking 3 minutes 22 seconds, and the output job quality did not impress me a lot
    ...
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    Re: Which Laser cutter to buy for a beginner?

    Read sam's laser faq if you like.

    opinions are one thing, facts are another.

    DC excited glass tubes have a different manufacturing cost base to RF excited metal / ceramic cavities.

    DC...
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    Re: Which Laser cutter to buy for a beginner?

    Don't be fooled.

    Just because you bought it locally doesn't mean you'll get any, or any better, support, or a better product... you might, but buying locally does not guarantee this.

    Metal and...
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    Re: Hurtle skate deck in maple

    Only do what I am asked to do by the customer. The original vimeo page explains it all, 4" lens for depth of field on the curved surface, and 0.08 mm line spacing
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    Hurtle skate deck in maple

    Raster engraving a nice hand laid up and moulded maple skateboard deck for Chris at hurtleskateboards.com/ 300 mm/sec & 0.08 mm line spacing at 20 watts power through the 4" lens to cope with the...
  10. Re: Need advice on chinese machine (100W) - safest settings

    YMMV

    My 2c.

    1/ use a water chiller to maintain a steady water temp that never exceeds 21 celcius.

    2/ stick to maximum 75% of RATED tube power, not PEAK tube power.

    3/ 300 mm/sec is fast...
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    How to engrave for that extra good look

    Just a quickie... For larger pieces, vector engrave (light cut) first before raster engraving to get that extra sharp edged look. https://vimeo.com/129662633
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    Re: HELP: K40 chinese laser won't cut in wood

    air assist, as much as possible...
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    Re: Etch tempered glass?

    hold the laser in one place and hit the test button and it will certainly shatter glass... get your feeds above 300 mm/sec for raster engraving and you can throw 30 watts at it no problem
  14. Re: Laser engraving ink film / Vintage radio panel

    "lamflex"
  15. Re: Random questions re: Laser engraving in general.

    I'm going to take a different view... lol

    The first video, photo engraving, provided you have an appropriate controller, and set your feeds and speeds right, then it is all about the software (if...
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    Re: laser beam not burning 1st mirror

    do you have the tube the right way around?
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    Re: thin plastic material for engraving

    didn't say it wasn't.... for the record it's 1.6 mm lamflex
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    Re: My SH-350 has landed !!!

    try slowing down the cut speed, or increasing the power, or decreasing the assist gas, or a mixture of all three...
  19. Re: China mfg sent me 220V 50hz equipment to the US

    Synchronous kit is a problem, for example a motor wound to do a synchronous 1,500 RPM from a 50 Hz supply, it will run hot, produce less that the rated power, and die early. "clocked" or timed kit...
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    Re: thin plastic material for engraving

    http://exeter-laser.co.uk/media/IMG_0835.JPG
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    Re: thin plastic material for engraving

    Rigid Laminate | Interior Flex Laminates
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    Re: thin plastic material for engraving

    brand name "lamflex"
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    It ain't always a dead tube.

    Should first say, background in mechanical engineering, so well aware that 99% of laymen over-tighten fasteners rather than under-tighten them... so I tend to be delicate.

    The problem. Went...
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    Re: GWeike 1612 Dual: How to make it faster?

    9 minutes at 400 mm/sec = 540 seconds at 400 mm/sec = 216 metres of cut. 216 metres of cut in 30 seconds.......only a BIG galvo laser will do that, nothing with flying optics will so either your...
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    Re: Deep engraving with 40w china laser?

    Depends on the definition of "deep" I routinely do 3 mm deep raster engraving in various woods with a CO2 laser, no problem at all. I have raster engraved wood to 16 mm depth. ...
  26. Re: A non typical application, what smaller unit has a "laser indicator"

    what you're looking for is a "jig".. ask any mill operator
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    Salon sign highlights

    Sticking this in the tips and tricks section. Edited highlights from a 1 hour 50 minute job making a sign from a 1400 mm wide piece of cedar. Vector engraving done at 50 mm/sec @ 40 watts Raster...
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    Re: Laser safe goggles / glasses UK supplier

    acrylic is 100% opaque to the beam, clear too.... ordinary clear eye protection goggles will work for stray reflections, more likely is getting flesh (hands etc) in the beam path. never ever ever...
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    Laser vs food...

    who needs kitchen utensils... https://vimeo.com/124338030
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    Re: Laser Engraved Text Looks Jagged

    Loose lens?
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