Sliding mitre saw.

Discussion in 'Modding' started by DSTM (Dougie), Mar 24, 2019.

  1. havabeer

    havabeer Member

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    That's and awesome little tool
     
  2. OP
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    Testing the prototype today.:)
    Images coming.
     
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    Hi Guys.
    Finally got the project finished. The topic heading should have read "Sliding cut off saw" Don't know where I got the mitre bit from.I have a mitre box if I need one. What I have built some may think it's over engineered.I tried Aluminum angle and over the distance, was not stable enough,so built the strongest rails I thought would not flex and works perfect I built a wooden frame so the F-Clamps wouldn't foul the table.
    I also made 2 heavy supports (Plexi) so helps the rails and start and finish platform.That way I can leave the saw on the jig all the time without lifting it off, all the time.Need it for Plexi mainly. First cut was through 10mm plexi.Nice clean cut,no chips or chattering, and dead 90 degrees so over the moon.The 60T blade I bought from EBAY seems to be working well.I will upload a few images.
    Tell us what you think? Guys.:)

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    Last edited: Mar 31, 2019
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  4. shredder

    shredder Member

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    Looks great. I don't think it's over engineered. Would like to see more close up detail of the bed+rails area.
     
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    Glad you like it.:thumbup: Will take close ups tomorrow. My camera is crap, or maybe the cameraman.:D
     
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  6. RyoSaeba

    RyoSaeba Member

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    Get a negative hook angle saw blade if you haven't already. For plastic work it's less agressive than positive hook angle ones, which will give you cleaner edges. It's not mandatory but recommended. Tip I got from a father/son pair who I met that runs an plastic fabrication workshop. I buy all my plastics from them and they're really nice people giving me excellent tips and helps whenever I ask.
     
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    Thanks for the tip.:thumbup: I wasn't aware of that,being new to Plexi.
     
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  8. havabeer

    havabeer Member

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    Yep I remember that being a thing for radial arm saws
     
  9. Recharge

    Recharge Member

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    excellent setup! going to have to make one of these, simple and can be hung up on a wall for storage!



    another way to do it.
     
    Last edited: Mar 31, 2019
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  10. Defyant

    Defyant Member

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    That look's PRO mate ! love the bent plex ends very clean work on those:thumbup:
     
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  11. OP
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    Thanks mate.:)
     
  12. Recharge

    Recharge Member

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    how did you make the aluminium rails?
    would like to see some closer pics /higher res to zoom in and see the detail.
    wanting to build something tomorrow as I have some thin ply I need to cut for ceiling inserts.
    or get the parts tomorrow heh.
     
  13. OP
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    Bought all from Bunnings. The rectangular tube 3mm and angle 3mm. Then clamped together. Drilled pilot holes and countersunk. On Pedestal drill. Slow but no room for error.If you drill the right sized hole in the retangular tube the little countersunk screws will cut their own thread with a drop of WD40 on screw. Practice first on scrap. Had to be 3mm or problem countersinking deep enough.Can tell you the sizes used in the morning.:)
     
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  14. Recharge

    Recharge Member

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    I have a tap set anyway so screw holes will be no issue.
    I'm tossing up between rails like yours and mild steel angle, as I want to be able to cut 1200mm ply sheets, so it's going to have to be pretty rigid rails.
     
  15. oculi

    oculi Member

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    I was just about to ask where you got that extrusion.

    wow that's keen, I would have just used

    as long as the outside radius on the corners of the saw base were larger than the inside radius of the angle iron, there are ways around that though I suppose.
     
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    I have plenty of taps. Just didn't need in this situation.I actually used baby wood screws with course thread.
    For 1200mm sheets go mild steel angle, like you suggested.:thumbup:
     
  17. OP
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    Angle iron is so back yard. I like the pro look of Aluminum. Everyone has choices.Use what rocks your boat.:thumbup::)
     
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  18. oculi

    oculi Member

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    aren't you doing this in your backyard? don't go putting on airs.

    :)

    if you wanted to go really pro you could use linear bearings, I might use something like that for a setup to cut steel some day.
     
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  19. OP
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    I certainly not putting on airs, and didn't mean it the way you took it.
    I took my time and built it as I wanted it.
    Use linear bearing.lol That's overkill, and no benefit.:)
    Always takes one.
    I used Anti Friction Dry PTFE Lubricant on the rails, so don't need linear bearings LOL
    This thread is getting silly.
    End of conversation,with you, Sir.
     
    Last edited: Apr 1, 2019
  20. OP
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    DSTM (Dougie)

    DSTM (Dougie) Member

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    I have cut 1200mm and even 2400mm ply many times. All I do, put the ply on milk crates, whatever. Measure the width from the blade to edge of base on saw. Clamp a straight length of timber that distance from blade, and follow the timber as you cut. You will get a dead straight cut.No need for rails in your situation.:)
    Defyant showed me that trick.
     
    Last edited: Apr 1, 2019
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