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### Question #: 3591

Question: from what I understand, The BlackTooth Laser comes with an open bottom with no bed, does one pull air through this opening for fume ventilation through the bed?

Current Solution

On the blackTooth laser cutter and engraver, the ventilation is at the back and there is a slit at the bottom front so when the machine is placed on a surface, the air will move from the front of the machine and out the back through the ventilation. This will move the particles past the mirrors and tube output efficiently with a reduced likelihood of building up on these important surfaces.

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### Other Possible Solutions to this Question

• is the 40W blacktooth laser cutter strong enough to cut through 4 ply chipboard with out horrifically burning/charring the edges? If you havent tried mabye you could as this is a must for anyone who will be using it to build architectural models. I would rather have this pre-verified before I give \$2100 to have you build one

As long as you have enough air blowing at the cutting location, you shouldn't have a problem with charring. A 40 watt laser should be able to cut through 4 ply chipboard.

• I was wondering what the max depth is for something to go into the 40W C02 Laser cutter and engraver with blacktooth

Hello, I was wondering if the Blactooth laser cutter can engrave in 3d, different depths in the same piece of wood?

I was wondering what the max depth is for something to go into the 40W C02 Laser cutter and engraver with blacktooth

• I have been asked to provide an exhaust for the Blacktooth Laser Cutter CO2 40W. I see no specifications or guidelines for exhausting fumes from the machine. Can someone help me?

Exhausting the blackTooth laser cutter is a very important consideration and should be taken seriously, especially if you are cutting materials that give off toxic fumes when the material is burned. You will want a 4 inch hose to connect from the blackTooth to a blower, and another 4 inch hose to connect from the blower to the outside. The blower should be sufficient to provide completely negative pressure within the laser enclosure so there will be no escape of gasses.

The connections at the machine, at the blower and at the location the hose exhausts outside should be thoroughly checked for leaks. Use a gasket, or silicone. Once complete, try cutting a non-toxic material that will give off an odor (wood, or non-toxic plastic) and try the system and determine if the smell is present.

I have been asked to provide an exhaust for the Blacktooth Laser Cutter CO2 40W. I see no specifications or guidelines for exhausting fumes from the machine. Can someone help me?

• What is a clear indication of a failing/failed laser tube? I know that laser tubes eventually "wear out", but how does one determine if the tube is loosing its "oomph"? My 40W Blacktooth laser tube return goes through an ammeter, so is the ammeter reading proportional to the beam strength, or can the beam die and still draw the same amount of current?

Dealing with glass co2 laser tubes, it is difficult to accurately tell if it is going out or loosing "oomph". The laser will loose its co2 levels, which will cause it to loose cutting strength.
We have noticed that the laser at its "strongest" or new state fires a purplish/reddish color laser through the tube, and when it is loosing its cutting strength it turns to a faded red orange/orange color.

Using a ammeter will only measure the current going to the tube. The PSU will not know when the tube is losing its cutting strength, so it will constantly flow the same voltage and current.

How many dots should come out of the laser

• where is the build manual for the blacktooth laser? online? I didnt get one with my machine

For our machines our steps for the build process can be found on the actual machine page with images to reference (please read carefully all the instructions) (https://www.buildyourcnc.com/blackToothLaserCutterAndEngraver.aspx).
You can get further help here (http://blacktoothlaser.blogspot.ca/2013/04/index-for-blacktooth-laser.html?view=sidebar) a post made by one of our customers!

where is the build manual for the blacktooth laser? online? I didnt get one with my machine

• I have a blacktooth laser engraver. The Y Axis stepper motor needs to be replaced. Can you please provide me with the information I would need to replace this motor.

Yes, if you need a replacement part on your machine please call us at 281-815-7701.

I have a blacktooth laser engraver. The Y Axis stepper motor needs to be replaced. Can you please provide me with the information I would need to replace this motor.

• What kind of cooling system should we set up for the Blacktooth laser cutter laser tube? Can tap water be used? Is water temperature critical?

The blackTooth's 40 watt laser tube can be cooled with simple tap water. A bit of anti-freeze keeps the tap water clean and free of algae. The cooler the water, the better output you will get from the laser. A great source of information can be found here: http://www.buildyourtools.com/phpBB3/viewtopic.php?f=8&t=3452

What kind of cooling system should we set up for the Blacktooth laser cutter laser tube? Can tap water be used? Is water temperature critical?

• I was wondering what was the difference between the two pair of goggles you are selling for the blacktooth. The tinted laser goggles and the Honeywell laser CO2 goggles

The Honeywell brand goggles meet ANSI certification Z136.1, relating to the safe use of lasers, and are calibrated to optimally block the specific wavelengths of light produced by CO2 lasers (the details are available in the website description here: https://buildyourcnc.com/item/laser-components-goggles-safety-honeywell.) The generic tinted goggles also block the specific CO2 laser wavelengths, but a good deal of other wavelengths as well. That and frame style variation is the basic difference.

I was wondering what was the difference between the two pair of goggles you are selling for the blacktooth. The tinted laser goggles and the Honeywell laser CO2 goggles

• What is the difference between the 3 Blacktooth laser packages offered? Specifically, one with/without a computer? Why do I need one? Also, is the \$2100 assembled vs the \$1700 which is not? What am I paying \$400 more for?

If you read the description the first uses a parallel interface for computer hookup. The second uses USB interface for computer hookup. The third utilizes an integrated computer which is built into the package thus you do not need an external computer.

• I bought a blacktooth laser from you about a year ago.. I am finally getting around to installing the laser tube and I noticed that my tube does't have the metal end on it like all the pictures I've seen. is this a focus lense and can I purchase one?

As shown in the instructions the laser tube that was used was a different model which had the metal end, compared to our full glass tube models we currently ship with the machines.
So there is no difference besides appearance between the two tubes.
The focus lens should be placed in the laser nozzle assembly and not on the laser tube itself.

• Do you have a larger kit for the Blacktooth Laser? I need a laser with at least 80watts of power.

We have one in the works. It is a 4'x8' machine that will house the 80w laser tube on the gantry. The machine is bout 2 months out as of 1/7/2014.

Do you have a larger kit for the Blacktooth Laser? I need a laser with at least 80watts of power.

• In the BlackTooth instruction the concluding sentence suggests connecting a wire from the right terminal of the pot to the VCC on the Laser Supply. There is no VCC on the power supply for the Laser that I can find. So, does this wire go to a different terminal on the power supply, or somewhere else where VCC exists, such as either stepper motor control?

VCC is the same as 5v. I will clarify on the instructions.

• I'm still unclear about the necessary software for the Blacktooth laser cutter. I just ordered the Blacktooth laser cutter with integrated computer. Does that mean I won't need the Mach3/EMC2/CamBam types of software? I am proficient with Google Sketchup so I have the design software covered, I just can't determine from the product description what else is required in the software department.

The blackTooth uses CNC software for its control. You will need either LinuxCNC (free) or Mach3 to control the blackTooth. There are various methods to use this control, such as using a .dxf (can be created from SketchUp) and a CAM software like CamBam. The CAM software will be used to provide machining operations, like profiling for the polygons and lines. Use a tool diameter of near 0.

The z-axis direction controls the laser on and off, so make sure that your material thickness is very thin (like .001") so there is no time delay for the laser turning on.

If you want to engrave photos, Mach3 has a plug-in for this purpose.

We will help you every step of the way, so keep posting questions, or give us a call during business hours.

• my 40w blacktooth laser kit with laser control unit only came with one controller connector, but the unit has two controller ports. Should I have two wires or do I just use controller port number one?

What is the model number of the laser controller?

Hey - the model number on the laser controller is
AWC708C
S/N:708014243

Do you need any additional information here? I really want to get going on it this weekend!

Sorry about that. If you are referring to the CN1 and CN2 connector, I don't believe it is needed if it didn't come with the connector. The components that we send to the customer is the same package that is sent from the manufacturer of the product. I would try connecting it to the CN1 connector of both units and test the interface (control panel).

The manual for the AWC 708 shows the two ports CN1 and CN2 connected, but that may just be for thorough documentation if the CN2 is needed for some reason. Do you have a copy of the manual or know where to find it? If not, I will put the document link here.

my 40w blacktooth laser kit with laser control unit only came with one controller connector, but the unit has two controller ports. Should I have two wires or do I just use controller port number one?

• Hi, I live in Australia and am looking at purchasing the Blacktooth laser cutter and engraver. I am wondering what the cost to ship to Australia would be?

You can use our shopping cart to determine the shipping. Add the machine and the parts you want to purchase, enter your shipping address and click on the Calculate Shipping Button to get a price for shipping. The shipping charges are determined directly from the carriers at the time of pressing that button.

Hi, I live in Australia and am looking at purchasing the Blacktooth laser cutter and engraver. I am wondering what the cost to ship to Australia would be?

• If a person wanted a larger laser machine than what is offered would they simply mount a laser on one of the larger machines, or is there a problem with doing this?

Adding a laser tube and supporting electronics and mirrors to larger milling machines is problematic unless a proper mount is provided, as in the greenBull CNC (https://buildyourcnc.com/item/cnc-machine-laser-spindle-combo-head).

The existing larger machines (other than the greenBull CNC machine) are designed to be used as milling machines and the laser will not be able to be easily mounted on these machines. Modifications can be done to accomplish this task, but there is quite a bit of effort needed.

If a person wanted a larger laser machine than what is offered would they simply mount a laser on one of the larger machines, or is there a problem with doing this?

• How to wire the Laser Power Supply with an arduino & GRBL ? (I'm not using a blacktooth laser cutter)

There is a th or tl on the laser power supply that serves as the trigger on a high or low signal. There is also a potentiometer "in" terminal that will accept a variable signal from 0v to 5v to control intensity. You can use either of these features to fire the laser tube.

If you have gotten grbl to work, then, no doubtedly, you have the expertise to know the output features of grbl. If grbl allows a pwm output, you can tie this to the potentiometer terminal on the power supply. Otherwise, you will need to use a digital output to control the power supply using th or tl.

How to wire the Laser Power Supply with an arduino & GRBL ? (I'm not using a blacktooth laser cutter)

• There are no instructions on how to assemble the laser control unit housing that came with my 40w blacktooth laser kit. How can I get instructions for how to assemble the control interface housing? Every configuration I try blocks the wire connection ports.

What laser controller model number do you have?

Hey - the model number on the laser controller is
AWC708C
S/N:708014243

Thanks for the model number. I am going to fabricate the parts and put it together myself to see the issue. We made this modification to the blackTooth laser cutter to better house the new laser controller that we wanted to add to the laser, but that may have been for the AWC608. If there is an issue with my assembly, we will create a new part that will correct the issue and send it to you.

Thank you for the update!

Have you had a chance to duplicate the issue yet?

• WHAT SOFTWARE CAN BE USED WITH THE BLACKTOOTH LASER CUTTER?

If you take the standard parallel cable BoB (Break Out Board), then you will need control software (Mach 3 or EMC2) and CAM software to make your G-Code (such as CamBam). Personally I use CamBam and Mach 3, they work beautifully but don't expect to turn them on and know how they work out of the box. Give yourself a few weeks to get familiar with the basics. CamBam is VERY powerful software for it's price. I'm surprised how much I keep learning on what I can do with it...I highly recommend it if you want as much control as possible.

Mach 3 + CamBam as a bundle costs \$310. EMC2 will give you a free replacement for Mach 3 and is exclusively for Linux.

If you use the USB BoB, it will cost an extra \$75 + \$75 for the software. This is an all-in-one package so no need for Mach 3 or CamBam.

For etching rasters (jpeg, bmp, tiff, non-vectors, photos), I highly recommend PicEngrave. It has been a labor of love for the past 9 years and John has done a wonderful job with it. It easily compares in quality compared to software that is in the \$200-\$300 range. John's software runs \$40 and can be found here: http://picengrave.com/ (don't let the modest website fool you, this stuff can do amazing things). DotG and the Mach3 engrave plugin are two other options and instructions can be found on Dustans page in the gallery on buildyourcnc.com website.

WHAT SOFTWARE CAN BE USED WITH THE BLACKTOOTH LASER CUTTER?

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