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IndustryArena Forum > WoodWorking Machines > DIY CNC Router Table Machines > Avid CNC > CRP4896 Standard to Linear Rail Conversion
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  1. #81
    Join Date
    Apr 2016
    Posts
    841

    Re: CRP4896 Standard to Linear Rail Conversion

    While not everyone likes them, I'm a big fan of t-track for clamping. Lot's of versatility and substantial holding power. Orange Aluminum sells 8' lengths for $17.08 and provides free shipping on orders over $100. I found 4" OC to be the perfect spacing. I use hard Maple for my clamp elements. Way cheaper than commercial products and works as well or better.

    Gary

  2. #82
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    I have had t-track in the past, it was always getting full of dust, so every time I tried to use it had to clean it all out. These are just straight up thru holes with 1/4-20 threads in them. never get packed.

  3. #83
    Join Date
    Apr 2016
    Posts
    841

    Re: CRP4896 Standard to Linear Rail Conversion

    Quote Originally Posted by nlancaster View Post
    I have had t-track in the past, it was always getting full of dust, so every time I tried to use it had to clean it all out. These are just straight up thru holes with 1/4-20 threads in them. never get packed.
    Interesting. I have never had an issue with dust collecting in the tracks. I'm guessing I may have a more efficient dust collection setup.

  4. #84
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    Two issues, one I didn't have very good dust collection. Another issue, the builder of my first CNC machine, a JoesCNC 2006, put the track in with sheet metal screws, so I ended up pulling them out of the wood.

  5. #85
    Join Date
    Apr 2016
    Posts
    841

    Re: CRP4896 Standard to Linear Rail Conversion

    Quote Originally Posted by nlancaster View Post
    Two issues, one I didn't have very good dust collection. Another issue, the builder of my first CNC machine, a JoesCNC 2006, put the track in with sheet metal screws, so I ended up pulling them out of the wood.

    If you ever to give t-tracks another shot, try using machine screws, washers and nuts to fix them. You'll never pull them loose. Also, check my build thread on the subject. The way I did it, you don't need screws of any sort. I used them anyway, but I didn't need to.

    Gary

  6. #86
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    Installed spoilboard and spend more time tramming machine. Trammed Z-axis Vertical to the best of my ability and trammed spindle to within .001 over a 12inch span in X and Y axis.

    Surfaced spoilboard and first project cuts will be Sunday, I will try and take some video.

  7. #87
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    Machine is working great, best edge cut quality I have ever had on acrylic, smooth to the touch!

    https://youtu.be/Da3stJWhyLg

  8. #88
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    Diamond drag sign also worked great, had to use exact stop mode to get the engraving to have sharp corners.

    https://youtu.be/UhYz501UEWs

  9. #89
    Join Date
    Apr 2016
    Posts
    841

    Re: CRP4896 Standard to Linear Rail Conversion

    Quote Originally Posted by nlancaster View Post
    Diamond drag sign also worked great, had to use exact stop mode to get the engraving to have sharp corners.

    https://youtu.be/UhYz501UEWs
    Nice sign!

    Gary

  10. #90
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    Thanks!

    I will say, the BLH rails seem to have been a good bet. Very smooth and stiff.

  11. #91
    Join Date
    Apr 2016
    Posts
    841

    Re: CRP4896 Standard to Linear Rail Conversion

    Quote Originally Posted by nlancaster View Post
    Thanks!

    I will say, the BLH rails seem to have been a good bet. Very smooth and stiff.

    Glad you like them. You mention "stiff." What's the preload? I've never seen a Chinese that was other than light, but then, I haven't spent a lot of time comparing them. My Taiwanese are medium preload.

    Gary

  12. #92
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    These are medium preload, which I understand is the preffered preload.

    The stiffness I am refering too is basically no play in the system, I am already getting better cut quality then I ever did before.

  13. #93
    Join Date
    Apr 2016
    Posts
    841

    Re: CRP4896 Standard to Linear Rail Conversion

    Quote Originally Posted by nlancaster View Post
    These are medium preload, which I understand is the preffered preload.

    The stiffness I am refering too is basically no play in the system, I am already getting better cut quality then I ever did before.


    Yes, I believe medium preload is preferred. I'm happy I chose medium.

    My first machine also used the skate bearings. World of difference moving up to linear rails.

  14. #94
    Join Date
    Feb 2005
    Posts
    829

    Re: CRP4896 Standard to Linear Rail Conversion

    Money making work for an online acquaintance.

    ATP5 tool plate .750in Drilled with .250 stubby drill, .250 hss single flute 60ipm helical bore for countersinks and thru holes, .375 hss single flute 60ipm .060 doc slotting for profile. .375 hss single flute 60ipm .750 doc .003 stepover for finish pass.

    All chamfers done on the machine with a single flute .250 chamfer tool.


  15. #95
    Join Date
    Jan 2016
    Posts
    69

    Re: CRP4896 Standard to Linear Rail Conversion

    Looks great!!


    Sent from my iPhone using Tapatalk

  16. #96
    Join Date
    Sep 2020
    Posts
    1

    Re: CRP4896 Standard to Linear Rail Conversion

    merhaba cnc router kendim yapmak istiyorum ama broje gerekıyor sizde varsa yardımcı olurmusunuz 1500x3000
    [email protected]

  17. #97
    Join Date
    Oct 2022
    Posts
    1

    Re: CRP4896 Standard to Linear Rail Conversion

    Hi Nick, who did you use for the anodizing?

    Thanks!

  18. #98
    Join Date
    Nov 2013
    Posts
    1

    Re: CRP4896 Standard to Linear Rail Conversion

    Hi, I was wondering who you used for the anodizing? Thank you!

  19. #99
    Join Date
    Apr 2016
    Posts
    841

    Re: CRP4896 Standard to Linear Rail Conversion

    Quote Originally Posted by Techson View Post
    Hi, I was wondering who you used for the anodizing? Thank you!

    I didn't have my parts anodized. I used 6061 t6 aluminum. Since I have the CNC in a temperature controlled spaced (heat and AC) I haven't had any adverse effects from not anodizing.

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