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### Question #: 13223

Question: What is the wavelength coming from your laser tubes?

Current Solution

The CO2 laser tubes that we sell have an output light wavelength of 10500 nm (nanometer). Our goggles provide protection for this wavelength of light.

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### Other Possible Solutions to this Question

• what is the wavelength of the laser output?

The CO2 laser tubes that we sell have an output light wavelength of 10500 nm (nanometer). Our goggles provide protection for this wavelength of light.

what is the wavelength of the laser output?

• What tolerance can I expect from your largest cnc machine and the laser cutter? Also, what depth can I get on the z axis?

The largest CNC machine we make at this time (12/04/2015) is the GreenBull 6'x12' model. This model has 2 options for Z-axis travel.

The short-z option has a total Z travel of 5.75 inches. From that you would subtract the length of the end mill used and the thickness of the spoil board to determine the maximum material thickness. (Example: If the end mill extends 1.25" from the collet and the spoil board is .75", then the material could be up to 5.75 - 1.25 - 0.75 = 3.75 inches in thickness). This is good for most sheet-type materials.

The long-z option, used mainly for large 3D carvings, requires a custom frame and allows for up to 36" of travel.

The tolerance of our machines, like any machine, depends on several variables. The major variables include the manufacturing tolerance, the type of machine control used, the precision of assembly, the thoroughness of maintenance, and the initial and ongoing calibration of the machine. Because we sell kits only most of these variables are outside our control. Therefore, we are hesitant to guarantee a certain level of tolerance for an end user. However, in our experience, tolerances of .001" are readily achievable with our machines.

• What is the price for your laser kit, to be shipped assembled

What is the price for your laser kit, to be shipped assembled

• What software is needed to run the laser controller from the PC?

The laser controller uses software called LaserCAD. You can find the link to the LaserCAD software on the Laser Controller product page:

https://www.buildyourcnc.com/item/Laser-Component-Laser-Control-System

What software is needed to run the laser controller from the PC?

• What is the bill of materials included in the build your own laser 2' x 4' 40 watt

The general bill of materials for the blackTooth 24"x20" laser system is as follows:

- The structural components (MDO and Plastic parts)
- The hardware to assemble all of the structural and mechanical parts
- Mechanical parts like v-groove bearings, bearings for shafts, shafts, pulleys, belts, etc.
- All of the motion electronics like motors, drivers, and laser controller
- Wire to connect all of the electronics
- All of the laser components including the laser tube, mirrors, mirror mounts, nozzle and lens
- Pneumatic components including the air pump and tubing
- Hydraulic components to cool the laser tube including a water pump and tubing

blackTooth 24"x20" Laser

What is the bill of materials included in the build your own laser 2' x 4' 40 watt

• Hi im interested in your new 4 x 8' laser , what is the thickest mdf sheet it can cut through ?

We have not specifically tested for this data point, but a general rule of thumb is that an 80W CO2 laser can cut wood up to about 1/2 inch. Actual results depend on a number of variables -- power level used, amount of air assist, focal length of lens, number of passes, cutting speed -- and each of those has its own tradeoffs. We are planning to do some of these tests in the near future and post the results, so stay tuned for more in depth information.

Hi im interested in your new 4 x 8' laser , what is the thickest mdf sheet it can cut through ?

• What are some good ways to control the vertical laser from a Linux machine?

There really isn't any good way to use Linux when using a traditional Laser Controller. If LaserCAD worked under the Linux OS, then that would work.

Would you like to know an alternative to use Linux using maybe LinuxCNC? There are ways to do it, but you will find yourself deep in g-code and out of the box wiring configurations, most likely.

Alternatively, you can create a dual boot scenario and put Window on the other part of the hard drive. This way, you would be able to run LaserCAD.

You can also "attempt" to use LaserCAD in the wine environment, but I have a feeling that will probably not work.

We're a small family-owned electronics and hardware manufacturer, using LinuxCNC already for milling. Dual-boot into Windows isn't a sensible option -- it would greatly reduce the utility of the machine. I have more information about our use case in https://buildyourcnc.com/FAQ/13985.

Ok, fair enough. Then let's get into the details on how you can use LinuxCNC to operate a Laser machine.

Do you have an idea what controller you will be using? Parallel?

My first inclination was to use LinuCNC with the parallel interface board. Of that's the answer, then we might want to just add to the LinuxCNC discussion that's starting to firm up at https://buildyourcnc.com/FAQ/13985 rather than duplicate the information here.

I'm open to other alternatives and am happy to hack; we make PCBs and cable harnesses as a business, so that's not a limitation either. One answer might be to use one of the open source controllers that are starting to show up.

My turn for phone typos. ;-) I meant to say "If that's the answer, then..."

Good idea. Thanks.

When a direct solution is realized on buildyourtools, I will post it here.

What are some good ways to control the vertical laser from a Linux machine?

• what is the total envelope of the vertical laser xl?

The footprint (necessary floor space) for the Vertical Laser XL is: 123 inches x 26 inches or 3124.2 mm x 660.4 mm

The height of the Vertical Laser XL is 87 inches or 2209.8 mm

So, the envelope of the Vertical Laser XL is:
length: 123 inches or 3124.2mm
depth: 26 inches or 660.4 mm
height: 87 inches or 2209.8 mm

what is the total envelope of the vertical laser xl?

• WHAT IS THE SYSTEM PASSWORD FOR LASER CONTROL UNIT?

WHAT IS THE SYSTEM PASSWORD FOR LASER CONTROL UNIT?

• What is the peak power of the 80 watt laser tube?

Power is measured in watts. The 80 watt laser tube can output more than 80 watts of power; however, it is not advisable to run the laser tube above its rated power.

This video will illustrate how to test for laser power:

What is the peak power of the 80 watt laser tube?

• what is the packing list for the laser/spindle combo head

The laser/spindle combo head includes the following major items:

Spindle components:
- The Spindle and VFD (Variable Frequency Drive) also called an inverter.

Laser components:
- 40 watt laser tube.
- Laser nozzle with laser focus lens (20 mm).
- nozzle tube fitting with 36 inches of silicone tubing.
- 40 watt laser power supply.
- Potentiometer (panel mount) to adjust laser intensity.
- Toggle switch (on/off SPST - Single Pole Single Throw).
- Air pump to provide air assist to keep debris out of the nozzle.

Structure and hardware:
- All structural parts to form the z-axis rail support and mounts for the spindle and laser tube/nozzle, vacuum hose and dust shoe
- 1/2" - 10 TPI 5 starts lead screw (2 turns per inch).
- Many screws/nuts/cross dowels.
- Dust shoe with installed strip brush.
- Aluminum angle to serve as rail.

what is the packing list for the laser/spindle combo head

• What warranty is there on the 40W laser and power supply?

Most of our products have a warranty that extends for 1 year; however, there are parts like end mills and laser tubes which are considered consumables. These parts, when used, become worn, or the usable life is decreased. Laser tubes are parts that, when used, shorten its life, and especially when proper methods are not used (i.e. running the tube with water), can drastically reduce the life of the tube. Therefore, the warranty for laser tubes are 30 days if the laser tube was not used.

What warranty is there on the 40W laser and power supply?

• what is the footprint of the vertical laser xl?

The footprint (necessary floor space) for the Vertical Laser XL is: 123 inches x 26 inches or 3124.2 mm x 660.4 mm

The height of the Vertical Laser XL is 87 inches or 2209.8 mm

So, the envelope of the Vertical Laser XL is:
length: 123 inches or 3124.2mm
depth: 26 inches or 660.4 mm
height: 87 inches or 2209.8 mm

what is the footprint of the vertical laser xl?

• What is the dot resolution (size) of the BlackTooth laser?

The dot resolution of the blackTooth is a combination of two specifications of the machine:

- The steps/inch (or steps/mm) which is the resolution but not the dot size
- The size of the actual dot, which is not specifically related to the resolution.

The steps per or resolution can actually be a range, since the driver microstepping can be modified.

A simple formula can be used to determine the resolution:

step per inch = (motor steps * microstepping) / (travel at one turn of the motor in inches)

if microstepping is set at 16 (1/16 on the driver) and you are using a pulley that has a pitch of .08 inches and 20 teeth on the drive sprocket

= (200 steps * 16 microsteps) / (20 teeth * .08 inches)
= 3200 steps / 1.6 inches
= 2000 steps per inch

To increase the resolution, just increase the microsteps on the driver.

The actual dot size will depend on the lens you are using, the material being lased, the time period that the laser energy is applied to the material, and the focal height of the lens to the work surface material. The energy from the laser will converge to a point and create a dot on the surface (which is different than the kerf of the laser cut into the material).

The dot will appear in different sizes depending on the material because, say wood, will burn causing a dot that burns the fibers of the wood and spreads a bit. The dot lased on the surface of a plastic, say Plexiglas, the dot will be smaller because the energy is absorbed only at that point, but since Plexiglas is a thermoplastic, a bit of the energy will melt the dot edges depending on the time frame (period) that the energy is applied to the surface.

The focus of the laser energy from the lens looks like a cone converging to a point, then diverges outward after that point. Depending on the distance from the lens to the surface of the material, the dot will be bigger or smaller. You want to find focal point (where the energy is focused into a point). You can use the technique where you lay a material on a slope and lase that material along the slope to find the sweet spot (dot) and that will be your smallest dot, or kerf location. Remember that the kerf will widen or narrow within the material thickness depending on the focal length lens specification (the cone will be shorter or longer depending on the lens focal length).

What is the dot resolution (size) of the BlackTooth laser?

• What is the footprint size of the Blacktooth laser machine?

The footprint of the blackTooth laser machine is:
Length: 37"/ 939.8mm
Width: 33"-3/4"/ 857.25mm
Height: 11"-1/8"/ 282.575mm

The height will change with the doors that open to retrieve your material/project the highest point will be 28"-1/4"/ 717.55mm

what is the maximum cutting depth of the blacktooth laser on plywood

What is the footprint size of the Blacktooth laser machine?

• WHAT IS SHIPPING DIMENSIONS AND WEIGHT FOR THE VERTICAL LASER.

Shipping crate size 121" X 36" X 92"

Weight 511 LBS

WHAT IS SHIPPING DIMENSIONS AND WEIGHT FOR THE VERTICAL LASER.

• What is the acceleration limited to with the laser tube vertical?

With our new Laser/Spindle Combo Head for our greenBull, we kept the acceleration the same and had no issues at all with the tube (regarding chipping breaking etc.). So there is no specific limit to the machine (take into affect the weight of your gantry and the overall output of your motors), but here is the setup we have now:
(with a custom greenBull gantry (4' x 8'))
X-axis
SPI: 910.069
Vel: 400.02
Acc: 12
Y-Axis
SPI: 911.023
Vel: 400.02
Acc: 18
Z-Axis
SPI: 1632.653
Vel: 79.98
Acc: 5

What is the acceleration limited to with the laser tube vertical?

• WHAT IS D.O.F OR DEPTH OF FIELD FOR THE BLACKTOOTH LASER AND LENS?

Depth of Field. This is how far the focal point goes before re-expanding again. With a 2" lens, you have approximately 2-3mm of DOF. This means that you'll have 2-3mm of perfectly focused laser before it starts to re-expand again. If you have a 4" lens, you will have up to 7mm of DOF.

WHAT IS D.O.F OR DEPTH OF FIELD FOR THE BLACKTOOTH LASER AND LENS?

• What is the z-axis travel for your largest machine?

The largest CNC machine we make at this time (12/04/2015) is the GreenBull 6'x12' model. This model has 2 options for Z-axis travel.

The short-z option has a total Z travel of 5.75 inches. From that you would subtract the length of the end mill used and the thickness of the spoil board to determine the maximum material thickness. (Example: If the end mill extends 1.25" from the collet and the spoil board is .75", then the material could be up to 5.75 - 1.25 - 0.75 = 3.75 inches in thickness). This is good for most sheet-type materials.

The long-z option, used mainly for large 3D carvings, requires a custom frame and allows for up to 36" of travel.

What is the z-axis travel for your largest machine?

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