Laser
Laser Engraving Water Bottles and Tumblers

When I added the rotary chuck to the laser, the primary use was to be for engraving powder coated water bottles and tumblers. These make nice gifts and I wanted to be able to do “full wrap” designs. With a “full wrap” design, as you may have guessed, the engraving goes all the way around […]

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Laser
Laser – Close Loop Stepper Alarm Interlock

Previously I had upgraded my OMTech 3555 130W CO2 laser from open loop to closed loop stepper drive on the X axis. See: https://bronkalla.com/blog/2022/10/17/converting-the-laser-to-closed-loop-stepper-drive/. The closed loop stepper driver has an alarm output. This is used to signal the controller that the stepper driver has encountered an error that it cannot correct. The particular driver […]

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Laser
Converting the Laser to Closed Loop Stepper Drive

Background I wanted to see if I could speed up the engraving on my OMTech 130w CO2 laser. The engraving speed is primarily dependent on the X axis drive. The velocity and acceleration of the X axis and the lens head are the main factors to improve without losing steps. As delivered the X axis […]

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Laser
Doll Cribs

Our grand-daughters are at the age where they love to play with dolls. They are infatuated with the American Girl style 20″ dolls, now adding the American Girl Bitty Baby 15″ dolls. To go with them, they want additional “furnishings” beyond the cases I built last year. A couple of them have their hearts set […]

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Laser
Isla’s Bed – Completion

After staining, I waited a couple of weeks to let the stain fully dry. The reason being that the gel stain used is oil based and with the winter weather, I needed to use a water based finish. My favorite for spraying in the winter is General Finishes Endurovar. It generally flows out well and […]

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Laser
Laser Rotary Axis installation

I have the OMtech AF3555 130 watt CO2 laser. I wanted to add a rotary axis device that could be shared with my CNC router. After looking around, I chose a 3 jaw chuck style, The unit is a RATTM with 80mm K11 chuck and 6:1 belt drive reduction. If it was only seeing laser […]

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Laser
Laser Beam Combiner

Having a “red dot” pointer is a nice accessory for a C02 laser. It provides an easy way to align the head indication to the material, do “framing runs” to highlight where you hope your design will land on the material, etc. However, the external / angled laser red dot devices leave much to be […]

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Laser
Laser Power Calibration

I am running an OMtech AF3555 130w laser with a Ruida 6442G controller, Yongli H6 laser tube and ZYE MYJG150W-1 laser power supply. The tube is rated for 30mA max. It is recommended by the manufacturer, for maximum tube life to stay under 80% power level which is then 24mA. When running I hit the […]

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Laser
Laser Air Assist Upgrade

The cuts with the laser can be greatly enhanced with air assist. This consists of basically blowing a compressed air stream out the nozzle below the lens. The laser comes with an air pump (glorified aquarium pump) but this is not enough. You need 30PSI for cutting and deeper engraving plus 5PSI for plastic engraving, […]

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Laser
Laser Exhaust

The laser is located in the basement shop. The nearest way out of the house is through the closet behind it and up and over the basement block wall through the rim joist. As an added complication the well pump pressure tank is also located immediately behind the laser, blocking some of the access. The […]

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