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### Question #: 6844

Question: What should the "glue groove" width be for flexible strip brush?

Current Solution

The width and height that we have on our brush piece for our cnc machines, is 1/4" width and .30" depth , the length is dependent on your specific dimension of brush and the design of the brush piece.

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### Other Possible Solutions to this Question

• What are the specifications for the 2" strip brush as far as dimensions and width of the rubber top?

The strip brush is .2 inches (5.23 mm) wide, so a slot of that width or slightly wider will work. We use a .25 inch groove and use glue to adhere the strip brushes in our dust shoe.

The material of the bristles and the strip that holds the bristles are nylon.

What are the specifications for the 2" strip brush as far as dimensions and width of the rubber top?

• for 2" Strip Brush per inch what is the dimensions (Width, High and thickness)

The strip brush overall height is 2 inches, of which 3/16 inch is backing. The strip is 1/4 inch wide. The diameter of the bristles is 0.01 inch.

for 2" Strip Brush per inch what is the dimensions (Width, High and thickness)

• Does the 2in flexible strip brush also come in 4in lengths for the bristle?

At this time, we only have 2 inch bristle length. How would you apply the 4 inch bristle? Would it be used for a CNC machine, or another application? We might be able to supply this longer bristly length if we can see a good market for it.

Does the 2in flexible strip brush also come in 4in lengths for the bristle?

• What is the width of your strip brushes?

The strip brush is .2 inches (5.23 mm) wide, so a slot of that width or slightly wider will work. We use a .25 inch groove and use glue to adhere the strip brushes in our dust shoe.

The material of the bristles and the strip that holds the bristles are nylon.

What is the width of your strip brushes?

• What are the dimensions (height x width) of the spine of the 2" strip brush? I need this info to design a dust shoe.

The strip brush is .2 inches (5.23 mm) wide, so a slot of that width or slightly wider will work. We use a .25 inch groove and use glue to adhere the strip brushes in our dust shoe.

The material of the bristles and the strip that holds the bristles are nylon.

• What wire gauge should be used for the 36V 8.8 amp power supply

Most of our power supplies allow for a 9 amp current draw.

For the Neutral, Live and earth ground, wire gauge for that level of current is 14 for relatively short cable lengths. Increase the gauge for longer lengths past 25 feet.

For the DC 24V output terminals to the drivers, 20 gauge is fine. If the power supply is connecting to only one driver, increase the wire gauge to 14.

What gage wire should I use from motor to driver

What wire gauge should be used for the 36V 8.8 amp power supply

• What is the dimensions and material of the spine on your Strip brushes?

The strip brush is .2 inches (5.23 mm) wide, so a slot of that width or slightly wider will work. We use a .25 inch groove and use glue to adhere the strip brushes in our dust shoe.

The material of the bristles and the strip that holds the bristles are nylon.

What is the dimensions and material of the spine on your Strip brushes?

• WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKFOOT CNC MACHINE

The blackfoot requires a total of 50 feet of cable.

The X axis needs 15 feet
The Y axis needs 17 feet
and the Z-axis needs 18 feet

These are 20 gauge 4 conductor cable.

WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKFOOT CNC MACHINE

• What thermocouple or thermister should I use for the extruder hot end?

The best choice would be a type K thermocouple.

What thermocouple or thermister should I use for the extruder hot end?

• WHAT LENGTH OF MOTOR CABLE SHOULD BE USED WTIH THE BLUECHICK V4.2

The recommended total length of motor cable should be 15 feet for the blueChick v4.2

Z - 6 feet
Y - 5 feet
X- 4 feet

20 AWG 4 conductor

If your drivers will be positioned farther from the machine, you may need longer cable.

WHAT LENGTH OF MOTOR CABLE SHOULD BE USED WTIH THE BLUECHICK V4.2

• WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKTOE

The motor cables for the blackToe are as follows:

Total 30 feet

X - 9
Y - 10
Z - 11

WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKTOE

• What kind of wire should I use between the invertor and the spindle?

The type of wire that should be used between the spindle and the VFD (Variable Frequency Driver also called the inverter) should be of stranded type and we use between 18 and 16 AWG.

The total current is divided among the three coil wires, therefor a wire gauge of 16 should be sufficient.

Currently we use 20AWG 4 conductor.

What kind of wire should I use between the invertor and the spindle?

• what depth increment should I use for pocketing and profiling with the 1/2" end mill?

The pocketing depth per pass will depend on the hardness of the material, the router/spindle you are using and on the melting point of the material. Use the feedrate that you would normally use for the size and type of end mill. You will need to test the depth per pass, starting at the full depth of the pocket. The spindle should have no problem, but if you are using a router, then it may bog down, so easing up on the depth per pass is recommended. If the spindle/router has no problem at the depths you are using, then you need to evaluate the edge finish to determine if it is acceptable. If it is not acceptable, then ease up on the depth per pass. Keep doing these steps until you have the finish and precision you expect.

what depth increment should I use for pocketing and profiling with the 1/2" end mill?

• LENGTH OF THE BRUSH STRIP FOR SPINDLE 2.2KW

The total length of the brush strip for a 2.2kW spindle would be 17 1/4" inches.

20

LENGTH OF THE BRUSH STRIP FOR SPINDLE 2.2KW

• Should the machine material (wood like) be painted before assembly?

Our machines structures is made from MDO, which is used in the construction industry. Specifically in cement forming, which allows the material to be treated and coated for the specific requirements in the field.
We do recommend painting the structure (everything structure wise besides aluminum) with oil based paints, if you have the machine in a very humid location or location with constant rain. If you do not have the machine in a climate control environment.
Painting the machine will not give it a longer run time or any specific advantages to the over structure or material. Painting it would be more of a personal choice, in making it specifically orientated to your shop or personality.

Should the machine material (wood like) be painted before assembly?

• What relay should be used with your USB BOB for controlling mist/flood/spindle on/off?

The relay that should be used with your USB BOB for controlling mist/flood/spindle on/off is one of the following options.

You could get and use the Planet-CNC.com Output Board found here, http://www.planet-cnc.com/index.php?page=shop

Or you could create your own setup using a resistor, solid state relay, transistor, and diode. You can watch this video, https://www.youtube.com/watch?feature=player_embedded&v=PJO_XoLL6lQ, to find out the correct way to accomplish this.

What relay should be used with your USB BOB for controlling mist/flood/spindle on/off?

• 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

• The LED light on one of my Microstep Driver Blinks while the other 2 remain solidly lit. What should i look for?

Have you tried to lower the amp setting on the driver that has the blinking LED.

• HOW LONG SHOULD THE MOTOR CABLES BE FOR BLACKTOE

The motor cables for the blackToe are as follows:

Total 30 feet

X - 9
Y - 10
Z - 11

HOW LONG SHOULD THE MOTOR CABLES BE FOR BLACKTOE

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