[ Log In ]
[ Register ]

Question #: 13840

Question: my end mills (router bits) are breaking during my cutting or milling process

Current Solution

Broken end mills are generally a function of the end mills getting too hot, so it is a good practice to check your feedrates and depth per pass to make sure your end mill is not getting hot. After a small job, touch the end mill immediately after the spindle stops (or use a device that can measure the temperature). If it is hot to the touch, then you probably need to increase the feedrate and decrease the depth per pass. Increasing the feedrate will cause the end mill to mill new "cool" material faster, thereby keeping the end mill cool. Reducing the depth per pass will allow the end mill to acept this faster feedrate and maintain your desired edge finish.

Respond:

Other Possible Solutions to this Question

  • How small of end mills are commonly used for cutting balsa? What thickness of balsa can these smaller mills handle?

    The size of end mills can vary to extremely tiny to very large cutting diameters. The smaller the cutting diameters, the shorter the available cutting length due to the possibility of breakage. You will first need to determine the thickness, or depth you will need to cut and find the available cut diameters for that depth.

    To cut balsa wood, almost any standard 1 to 4 flute end mill will be fine that are intended to be used with wood. The end mill will state the materials that it can cut. Wood end mills will exhibit a flute geometry that is more stretched out to straight.

    Click the link to respond:
    How small of end mills are commonly used for cutting balsa? What thickness of balsa can these smaller mills handle?

  • Is there a recommended break in process for a 2.2kw water cooled spindle?

    A break in process, I'm guessing means if the spindle needs to be turned off for some reason? If so, then no. The water cooled spindle can be run constantly. We run our spindle for very long periods of time.

    Click the link to respond:
    Is there a recommended break in process for a 2.2kw water cooled spindle?

  • How do I determine what post processor I have on my shop built CNC. There are about a million to choose from on Vcarve Pro

    You will probably have post processors like the following listed:
    Mach2/3 ATC Arcs (inch)
    Mach2/3 ATC Arcs (mm)
    Mach2/3 Arcs (inch)
    Mach2/3 Arcs (mm)
    Mach2/3-WrapX2A ATC Arcs (inch)
    Mach2/3-WrapX2A ATC Arcs (mm)
    Mach2/3-WrapY2A ATC Arcs (inch)
    Mach2/3-WrapY2A ATC Arcs (mm)

    If you have an Automatic Tool Changer, use the post processor with the ATC in the name. For most applications and if you don't have an ATC (automatic tool changer), use the Mach2/3 Arcs (inch) or (mm) post processor.

    Click the link to respond:
    How do I determine what post processor I have on my shop built CNC. There are about a million to choose from on Vcarve Pro

  • I'm new to CNC and just finish building my router.I need software for my post processor and not sure if your product is what I need?

    You will need a CNC software that will control your router cnc machine, and your design CAD/CAM software will need to know the CNC software you plan on using so the post processor in the CAM software can create the g-code for the CNC control software. So if you have for example, Mach 3 and our parallel breakout board, you can use the Mach 3 post processor in your design software.

    Click the link to respond:
    I'm new to CNC and just finish building my router.I need software for my post processor and not sure if your product is what I need?

  • My x and y motors are on each end of my gantry do I wire each motor to the same XP

    I'm not sure what you mean by XP. Can you clarify? Thanks.

    All stepper motors must be wired to their own stepper motor driver. If two motors need to be driven by one signal (say there are two X motors) then the two drivers will be connected to same CP (pulse or step) and CW (direction) pins on the control interface. If the two motors need to turn in opposite directions, then swap the A and B coil connections.

    Additional Information:
    Whitch A+ or A - B + or B -

    Click the link to respond:
    My x and y motors are on each end of my gantry do I wire each motor to the same XP

  • Status update on my order? It was placed two weeks ago, and it is still classified as Processing???

    My aologies for any delays that may be happening with your shipment. Please contact us at customerservice@buildyourcnc.com so we can get your information and provide you with an update immediately.

    Click the link to respond:
    Status update on my order? It was placed two weeks ago, and it is still classified as Processing???

  • The rods in my blackFoot gantry connected to the x-axis motor are bowing or bending.

    We are using the 1/2" rods in the gantry now. You can opt to purchase 1/2" rods and new gantry sides which will accept 1/2" ID bearings.

    Click the link to respond:
    The rods in my blackFoot gantry connected to the x-axis motor are bowing or bending.

  • 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.

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

  • Which end mill would you advise to buy for cutting in full depth MDF and plywood of up to 20mm thickness? I am about to install a 2.2k spindel on my cnc.
  • blackToe 2'x4' CNC Router - What are the actual x and y cutting dimensions (eg: 22"x46")

    The actual cutting dimensions for our blackToe machine is 2'(24") x 4'(48"), the overall size of the structure built is a bit larger so that our customers have the actual size mentioned with each of our machines!

    Click the link to respond:
    blackToe 2'x4' CNC Router - What are the actual x and y cutting dimensions (eg: 22"x46")

  • How would you recommend cutting glass with a GreenBull?

    It depends on the type of cut you're trying to make and the type of glass. In general, straight cuts can be made by scoring the glass using a type of engraving bit, such as these:
    http://www.widgetworksunlimited.com/CNC_Specialty_Bits_s/33.htm.

    Complex curves and thicker glass is usually tackled with a diamond burr endmill and a specialized jig. Here is a nicely done you tube video giving an idea of how that works.

    Click the link to respond:
    How would you recommend cutting glass with a GreenBull?

  • Requirement of laser cutting CNC Router having working area: 100cm x 100cm x 300cm, Belt driven motion, servo motor controller

    This is an open ended question to which there could be many possible answers.

    The requirement of a laser cutter is having a laser with enough energy output to cut the intended material. Generally, the laser function is not tied to the working area unless the laser tube is stationary, where the farther the beam has to travel, the less energy results at the intended area (on the surface of the material).

    We don't use servo motors here. Rather, we use precision stepping motors instead.
    https://buildyourcnc.com/category/nema

    We do offer timing belts.
    https://buildyourcnc.com/category/pulley

    Our blackTooth Laser Cutter:
    https://buildyourcnc.com/blackToothLaserCutterAndEngraver.aspx

    Our greenBull Leaser/Spindle Head:
    The CNC Machine: https://buildyourcnc.com/greenBullCNCMachineKit.aspx
    The Laser/Spindle Head: https://buildyourcnc.com/item/cnc-machine-laser-spindle-combo-head

    Click the link to respond:
    Requirement of laser cutting CNC Router having working area: 100cm x 100cm x 300cm, Belt driven motion, servo motor controller

  • Is the Greenlean capable of cutting soft metals like aluminum or brass? Thanks

    Yes, the greenLean can cut metals such as aluminum and brass. The gantry and Y carriage was designed to be rigid enough to handle these types of metals. The typical metal cutting techniques should be used, such as high feedrates to reduce heat buildup at the end mill, or the use of cutting fluids or cold air used at the end mill as is necessary with most machines that cut similar metals. This is necessary since the aluminum has a rather low melting point and can clog the end mill.

    Additional Information:
    All of our machines are capable of cutting many metals, including steel and aluminum as long as the proper CNC machining operations are used like light fast passes, and if desired, using air cooling for better performance.

    Here is a video of one of our customer demonstrating aluminum cutting using air to cool the end mill.
    https://www.buildyourcnc.com/tutorials/tutorial-milling-cutting-metal-blacktoe-mark-gottschalk

    Additional Information:
    how do I hold down material on a greenlean

    Click the link to respond:
    Is the Greenlean capable of cutting soft metals like aluminum or brass? Thanks

  • I purchased Mach3 from buildyourcnc dont know what verson i need to use in VCarve as the processor. There are 8 2/3Mach listed

    You will probably have post processors like the following listed:
    Mach2/3 ATC Arcs (inch)
    Mach2/3 ATC Arcs (mm)
    Mach2/3 Arcs (inch)
    Mach2/3 Arcs (mm)
    Mach2/3-WrapX2A ATC Arcs (inch)
    Mach2/3-WrapX2A ATC Arcs (mm)
    Mach2/3-WrapY2A ATC Arcs (inch)
    Mach2/3-WrapY2A ATC Arcs (mm)

    If you have an Automatic Tool Changer, use the post processor with the ATC in the name. For most applications and if you don't have an ATC (automatic tool changer), use the Mach2/3 Arcs (inch) or (mm) post processor.

    Click the link to respond:
    I purchased Mach3 from buildyourcnc dont know what verson i need to use in VCarve as the processor. There are 8 2/3Mach listed

  • Can a sample be sent and or brought to you for confirmation of the end results when cutting carpet tile and or hard surface tile?

    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.

    Click the link to respond:
    Can a sample be sent and or brought to you for confirmation of the end results when cutting carpet tile and or hard surface tile?

  • Why is my 4x8 blackfoot not cutting shapes correctly. I have ran the moter test in Mach 3 and still cuts terrible

    Dealing with the machine not cutting the design you may have correctly, could be a variety of things.
    Most common, is the machine is not properly calibrated or tighten correctly (in specific areas).
    To calibrate the machine, go to the settings(alt-6) page, and click the set steps per unit(right above the reset button). You will receive a tab which asks to select the a axis, once selected it will ask how much you plan on moving. Here you will enter a value of inches/mm's. The machine will move what it thinks is the correct length and might be dead on or might be off, we recommend doing this about 2-3 times per axis, and in long distances. (ex: for the BF you may do 2-4Ft on y-axis and 5-8Ft on the x-axis)

    Make sure the v-groove bearings are tight, on the y-axis plate and z-axis, as well as the v-groove bearings on the gantry legs. (test: try moving them with your finger, if tighten correctly they will not move)
    Also having the chain too loose will not move the machine enough to create your design, the chain should have about a 1" - 1"-1/2" of slack in the middle of the table when the gantry is in either of the far ends of the table. (larger machines will have a bit more slack).

    Trying to run the machine faster then the bit can cut, or running with a old endmill/router bit.
    This is a rare occurrence but is seen, having the correct endmill, feedrate, and RPM will have a great impact on your cut. They all work together in one complete conjunction, if one is off they will all be working incorrectly.
    Each endmill will have its manufactured specifications.

    Click the link to respond:
    Why is my 4x8 blackfoot not cutting shapes correctly. I have ran the moter test in Mach 3 and still cuts terrible

  • Hello, will the 5x10, 40w laser cutting table cut nylon fabric like 1000D Cordura?

    1000D Cordura is a woven fabric made with nylon. CO2 Lasers can cut nylon but nylon melts poorly, so the finish may not be acceptable.

    Additional Information:
    Thats what i was worried about. Is there any way i could get someone to run a quick test to see how the finish is? Im trying to decide to buy it or not. Most of our edges end up getting bound, so it may not be a big deal if they are a little rough

    Additional Information:
    If you send me a sample of the fabric, I have no problem putting it on my Vertical Laser XL and running a few passes at different speeds and intensities. Sounds like a good opportunity for a test on video.

    Additional Information:
    Also, please send me a MSDS if you can for the specific material that you have. I want to make sure there are no harmful gasses from other constituents of the fabric.

    Click the link to respond:
    Hello, will the 5x10, 40w laser cutting table cut nylon fabric like 1000D Cordura?

  • Can I attach a 400w CO2 laser tube to you units (for cutting Stainless Steel at 1/8") ?

    A 400w laser tube will not be a simple swap of our laser tube in our blackTooth or our spindle/laser hybrid. The overall size factor of a 80w - 400w is greatly larger than our 40w laser tube and will be the biggest issue. You will have to completely modify our units to retrofit a larger tube, which might be more costly than expected as well as more time consuming.

    Click the link to respond:
    Can I attach a 400w CO2 laser tube to you units (for cutting Stainless Steel at 1/8") ?

  • Would any of your kits be appropriate for cutting brass type?

    Really, any of our CNC machines can cut brass.

    Click the link to respond:
    Would any of your kits be appropriate for cutting brass type?

Get Help with:
This Product
Orders
Tech Support
Sales
This Product
Order Query
Tech Support
Sales
Not logged in. Log In Register
Track Order(s)
View Order(s)
I Want to Schecule a One-On-One Paid Tech Support Session
Book an Appointment Pertaining to a BuildYourCNC Product (Free)
Ask a Quesion Below (Free):
Book an Appointment Pertaining Other Equipment ($60/half hour)
Book an Immedite Appointment Pertaining Other Equipment ($120/half hour)
Ask a Quesion Below (Free):
Waiting for response... I may not answer immediately, but I was notified on my cellular phone so my response is forthcoming. If I don't respond immediately, you can always go to the [My Account] page to see all of our chats at any time.