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Table Saw Fence

Discussion in 'Other Builds' started by Don Crawford, Feb 27, 2017.

  1. Don Crawford

    Don Crawford Well-Known
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    Don Crawford published a new build:

    Read more about this build...
     
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  2. crazerico

    crazerico Well-Known
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    looking forward to this
    i already made a miter attachment to mine making cuts up to 32 inches .. helps alot
     
  3. Don Crawford

    Don Crawford Well-Known
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    I am debating whether the gantry should be horizontal with a brake in the same plane as the wheels or vertical screwing in through the gantry plate. I will make a picture.
     
  4. crazerico

    crazerico Well-Known
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    keep us update this will blow out a pro 40 vega fence
    And talking about fence
    this oen is nice but the price is not
    TS-LS Table Saw Fence, 52" Range, Incra LS52-TS-XL
    but i might consider building one from Vslots which would be more rigid
     
  5. JustinTime

    JustinTime Master
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    In the build section it shows that pictures are supposed to be there but they are not showing.
     
  6. Don Crawford

    Don Crawford Well-Known
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    So I am thinking either of these. These are just quickly thrown together, those handles are not to scale they are just models I found. There are three bolts to attach the rail to the table so I cannot do the vertical rail

    upload_2017-2-28_19-25-31.png

    upload_2017-2-28_19-25-51.png
     
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  7. Don Crawford

    Don Crawford Well-Known
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    Its design phase. I am not building yet.
     
  8. Don Crawford

    Don Crawford Well-Known
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    For cost sake, I think it is best to stick with a brake like this.

    upload_2017-2-28_22-8-12.png
     
  9. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    A TR8*8 screw through a nut block won't have sufficient holding power to be of any value. You really need a clamp of some sort. The one you have shown, modified with a good rubber bumper is probably the best approach.

    One option I have been looking into is adapting Titanium Skewer Drum Bicycle Quick Release Hole Hub Carrrier Rack Install LO | eBay. I haven't gotten very far with this because I only received them yesterday but as it turns out the threaded rod is M5x0.8 so it is easily removed and regular screws can be threaded into the cam clamp head which can in turn pull against the inside of the V-slot channel as a locking method.
     
  10. TrishC

    TrishC OpenBuilds Team
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    Hey Don. Nice looking design! We hope to add a break to the Part Store in the future. If you or Rick find the type you like, please reach out to us at contact@openbuildspartstore.com with the details.
    Thanks
     
  11. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Welcome to the forum @TrishC. :thumbsup: (It's about time you joined us.)

    The rubber bumper upgrade I was referring to can be found at Toggle Clamp Upgrade although the ones he selected may be a bit big for your use.
     
  12. Don Crawford

    Don Crawford Well-Known
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    Let me know how that bicycle hub goes because that seems to be cheap strong and other than a bit long, perfect
     
  13. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Worked like a charm. Removed the bicycle bolt and threaded in an M8x35.

    IMG_0254.JPG

    Sawed off the bolt head and added back the original shoulder washer and then added a rubber washer and finally a tee-nut.

    IMG_0258.JPG

    The rubber washer helps soften the grip on the extrusion and increases the acceptable grip range. Without it there is enough force in these clamps to deform the inside edge of the extrusion.

    Here is the final assembly. I got them as a better alternative to the adjustable lever clamps used in Adjustable Router Guide Template.

    IMG_0264.JPG

    Note: the exposed stud was trimmed to a length of 17mm below the cam lever handle (based on it being at the 90°, locked position). This appears to be just about right for passing through an 1/8th inch plate and into the tee-nut in the extrusion.
     
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  14. Don Crawford

    Don Crawford Well-Known
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    What does the top of the bolt look like before modification? Does it thread into a nut inside that cam lever? I think I would prefer to cut on that end and save buy an m8 bolt, mostly because I would want to buy an m8 bolt with a t-slot end.

    Maybe I will stop being cheap and get some of these McMaster-Carr
     
  15. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Oops, meant M5x35...

    As for the connection, it's fairly simple. The threads are tight however as this end of the rod was not intended to be adjustable.

    IMG_0271.JPG

    As for the M8 T-stud, it's way too big for V-Slot. (Sorry for leading you astray on that one.) The biggest bolt that will fit is 1/4-20 and you may need to grind the head of any T-headed bolt that big to get it into the slot.

    I'm currently working on a drill press table and plan to use 1/4-20 hot shoe studs with the sides trimmed as part of the hold down system. Cam clamps to use with these are fairly easy to find should you want to go that route.
     
  16. Giarc

    Giarc Master
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    Hmmmm... I like this table saw fence. I may make one, but maybe add steppers and a control panel. Zero it against the blade then input the width you want to cut. Not necessary, but fun. :)

    Edit: This has me thinking, if "necessity" is the mother of invention, then is "not necessary, but fun" the drunken uncle of invention?
     
  17. Don Crawford

    Don Crawford Well-Known
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    Now another engineering debate. Because these are soft wheels, I have to be careful about how the clamping force interacts with the wheels on the rail. Do I use one on each side of the fence and/or on both gantries?

    Depending on what I do it could tilt the fence or pull the bearings out of the wheels.

    I almost wonder if I could put the clamp on another wheel and use that as the brake in line with the rest of the wheels.
     
  18. wmelendez

    wmelendez Well-Known
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    Hi, I'd being thinking to build a fence like this for a while, with the same problem about the brake. What you think about using a C-Bean linear actuator, with a wheel handle instead of an stepper motor? and just a rail at the other side. This way you don't need a brake.
     
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