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Type: Posts; User: electronrancher

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  1. Replies
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    Scam ads polluting cnczone

    Today I am overrun with scam ads when visiting this site. Android stopped 25 pop ups on one page, another forum page auto loads some fake scan tool. The site is pretty much unusable with these ads...
  2. How to stop the $*#( keypress beep on AWC708

    Wow, is that the most annoying thing in the world or what?

    I have looked through the menus but didn't find anything. I don't want to cut (well, yes I kind of do) the damn beeper out because I...
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    Re: reputable CO2 laser tube sellers

    What is peak glass' price for the 80w, 1200mm x 55mm tube inc shipping to US?

    Also, how is the power tested?
  4. Re: Rapid Loss of Cutting Power- New Tube, Fairly New Power Supply

    I have heard that squeal at low current. When I looked at the current through the LV side of the tube with an oscilloscope + sense resistor, I saw that it was varying wildly. I chalked it up to...
  5. Re: Blown power supply dy10 for reci laser 80w

    There is a transformer inside the power supply to make the HV. That's the one that may have a problem, not one outside.

    I think your new supply will take care of everything, but yes - if you can...
  6. Re: Blown power supply dy10 for reci laser 80w

    Those are the push-pull transistors on the front end of the flyback to make the HV for the laser tube. If they blew, it's likely the power supply is bad due to a shorted flyback transformer or a...
  7. Re: Wondering if someone can help me with an acrylic cutting problem I'm having.

    Beware that the cracks (crazing) can often show up again if the acrylic is cleaned with alcohol, or if the acrylic is glued with weldon - although that takes some time to spring a leak.. :)
  8. Re: Wanting someone with Laser experience to convert my Drawings to Laser Ready Files

    Most laser software can take DXF.. Could you simply do all your panelizing in the CAD tool and then transfer that file directly to the laser software? Or you want someone to explode your 3D shapes...
  9. Re: FDA rejecting my laser!! Anyone own a Sinjoe??

    Wow, I'm really sorry to hear it. Unfortunately I can't help, but I am interested in what port the machine came through? It could help others in the future avoid this overzealous customs location. ...
  10. Re: My chinese laser cutter won't work at all, software doesn't see the cutter

    First of all, corel is just an art program like RCaffin said. After installing corel, you probably have another tool to install called corellaser, which installs a plugin into corel. It is the...
  11. Re: Question about what I can engrave with this

    No guide, sorry. Although you may find some using google. I usually just engrave at high power (18mA), medium speed (150-200mm/s) and rinse with water.. Rather than true engraving, what you get is...
  12. It can engrave any type of wood. Acrylic...

    It can engrave any type of wood. Acrylic (stinky!) Glass with some practice. Rubber for stamps, etc.

    It can (probably) cut 3mm Baltic birch plywood, 3mm acrylic, and maybe 4.5mm pure bond ply...
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    Is it properly focused for the height of the wood...

    Is it properly focused for the height of the wood you're using?
  14. Perhaps the end stop sensor is not working. You...

    Perhaps the end stop sensor is not working. You could try unplugging the motors (with power off!) and then power up and manually move the axes. This way you can trigger the end stop while watching...
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    Cool, congrats. I wanted to mention that if you...

    Cool, congrats. I wanted to mention that if you are cutting near the upper limit of your machine it is often helpful to set the lens a bit closer to the work than normal. The object is to set the...
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    If that's 55F-65F, you're fine on temperature -...

    If that's 55F-65F, you're fine on temperature - that's colder than I use because I would get condensation running that cold.

    I assume you have a good water pump circulating this water, right? ...
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    Re: Some notes on cooling and chillers

    No, you can't measure beam output by the waste heat produced by the tube. Remember, I was doing calculations for a chiller so that waste heat number is important to know how big a chiller to get. ...
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    Re: Some notes on cooling and chillers

    Yes, I never intended the chiller to actually reach that temperature. I just wanted to set it so low that the compressor was guaranteed to be running full blast so as to give as straight a cooling...
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    Re: Some notes on cooling and chillers

    Just for curisity's sake, I did another test today with the chiller while the laser was running. Here's how it turned out.

    293574

    I again run the chiller full out (setpoint = 40F) and at about...
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    Some notes on cooling and chillers

    Hi All,

    It was a hot summer, and I found that my 50W laser's power would drop over the course of a few hours run due to temperature rise of the cooling water. It seemed to struggle to get through...
  21. Re: Can I use straight automotive antifreeze coolant?

    One note. I used to use auto antifreeze (ethylene glycol), in a transparent reservoir - it got slimy from bacterial growth after sitting a couple of weeks. Having a dark reservoir would help, but I...
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    I used to run the heater and thermistor pairs...

    I used to run the heater and thermistor pairs along the extruder cable and down to the electronics. But recently I mounted the Vellman board up on the extruder carriage and now I just run one pair...
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    You're going to want to use crimps on those...

    You're going to want to use crimps on those heater resistor leads, and on the wires you attach to them - they get hotter than the melting point of solder and can fall off.
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