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### Question #: 14166

Question: whatt is the physical size of the blacktooth area with the working size of 20 x 23"?

Current Solution

To allow a 4'x8' stock to be used by a blackTooth laser system, you will need to cut the large sheet with a standard woodworking tool such as a hand saw, circular saw, table saw, jig saw, etc. Alternatively, you can purchase our very affordable 4'x8' vertical laser systems that allows a 4'x8' sheet stock.

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### Other Possible Solutions to this Question

• what is the physical size of the blacktooth area with the working size of 20 x 23"?

The blackTooth work-space area and travel (X and Y axis travel) is 20" x 24"

what is the physical size of the blacktooth area with the working size of 20 x 23"?

• with a work area of 24"x20"on your Blacktooth lazer,How do I get a 4'x8' sheet down to that workable size?

To allow a 4'x8' stock to be used by a blackTooth laser system, you will need to cut the large sheet with a standard woodworking tool such as a hand saw, circular saw, table saw, jig saw, etc. Alternatively, you can purchase our very affordable 4'x8' vertical laser systems that allows a 4'x8' sheet stock.

• 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 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 size/width of pulley and timing belt used in Blacktooth laser cutter ?

The blackTooth uses MXL timing belt with 1/4" MXL Drive Pulley 20 teeth.

what is the size/width of pulley and timing belt used in Blacktooth laser cutter ?

• What´s the size and weight of the blacktooth shipping box?

For our blackTooth laser cuter and engraver, the specified packages in shipment may vary to option chosen and additional purchases.

3 packages:
40" x 21" x 5"/54 lb.
17" x 12" x 12"/27 lb.
40" x 10" x 7"/5 lb.

What´s the size and weight of the blacktooth shipping box?

• Hello can i use the 3cfm vacuum pump with a 8x4ft working area table ?

Our 3 CFM vacuum pump is not recommended to be use as a vacuum.
Unless being used to hold your material into place or creating a vacuum table, Small areas will work with this vacuum pump but not the entire 4' x 8' table area unless combined to create a vacuum table with multiple 3 CFM vacuum pumps.

Hello can i use the 3cfm vacuum pump with a 8x4ft working area table ?

• Is the blackTooth Laser Cutter available for custom size orders?

We will generally consider a change in dimensions or machine features if the change will be beneficial to other users as well. This is due, in part, to the time it takes to make such changes and that it maintains the desired functionality and expected safety.

What dimensional changes do you wish for the blackTooth?

I was hopping to be able to have a cutting surface of 2' x 4'

We have that size in our queue to be designed. However, you may be more interested in the laser adapter we are designing for the existing CNC machines to house a laser tube on the z-axis of these machines. This will be a quicker turnaround.

Is there a time frame possibly to having this adapter made as well as cost? I am possibly looking to start a business so I am looking for something I can use to mass produce some specific parts.

There is one project that takes precedence to the adapter, so I would expect in two months time.

Is the blackTooth Laser Cutter available for custom size orders?

• What size and length of cable carrier suits the BlackTooth laser cutter?

The space within the blackTooth laser cutter is so tight that a cable carrier will not fit.

What size and length of cable carrier suits the BlackTooth laser cutter?

• 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?

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

I would say mechanically, between the official build instructions, Warren's awesome blog (http://blacktoothlaser.blogspot.com/) and the tips in the forum, the blackTooth is a really simple build. The challenges come with electronics and software. There's a number of different ways to drive the laser and motors. A decent understanding of electronics and computers is a must.

WHAT SOFTWARE CAN BE USED WITH THE BLACKTOOTH LASER CUTTER?

• For cutting with the BlackTooth, what is the best type of clear plastic/acrylic to use, and can you recommend a source?

The blackTooth will cut acrylic very easily. The type of acrylic (cast or extruded) is not important since the acrylic itself has 100% absorption with CO2 lasers. Any plastic retailer, even the home improvements stores will have sheets of acrylic.

Avoid using plastics that will off-gas toxic and corrosive fumes. One example is PVC which is Polyvinyl Chloride. The burning of that material will exhaust chloride into the air and combine with the hydrogen in the air causing a chemical reaction yielding hydrochloric acid which is corrosive and highly toxic to humans.

Always read the MSDS (Material Safety Data Sheet) for any material that you intend to burn with the CO2 laser.

• Can we use a more powerful laser tube in the blackTooth? Say, 100w from ColeTech? Are they just physically too large/long?

If the laser tube is the same dimensions then yes, that tube can be implemented and take into account the required laser power supply and safety protocols on that high powered laser tube.

Our blackTooth is a fixed machine and is only made for the 40 watt laser tube that we sell.

• 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

• What kind of computer comes with the blacktooth and do i need to install windows after purchase?

For the integrated computer for the blackTooth, the hard drive doe not need to be formatted, but will require an OS (operating system) to be installed. Ubuntu Linux can be installed with the CNC integrated software from Linuxcnc.org. Windows can also be installed.

What kind of computer comes with the blacktooth and do i need to install windows after purchase?

• 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.

• 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?

• WHAT ARE THE BLACKTOOTH LENS SIZES AND FOCAL LENGTH SPECIFICATIONS?

The lens is 20mm wide and a 50.6mm focal length (the one included). This lens will stand up to at least 30PSI air assist.

The mirrors are 25mm wide mirrors.

Focal length is the distance from the lens to the material for the laser converge into the best focal point. If a lens is listed as 2". You measure 2" from the lens to the material, this will be the tightest point the laser can go before it starts to re-expand again losing focus.

WHAT ARE THE BLACKTOOTH LENS SIZES AND FOCAL LENGTH SPECIFICATIONS?

• 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?

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