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  1. #1
    Registered
    Join Date
    Apr 2008
    Posts
    4

    Help! PVC Letters Curve not right

    I have Mach3 running in a computer with windows 7 and a UC100 adapter for USB to the db25 pin on the router
    I use to the CNC to cut PVC letters, my problem is that the on the some part of the letter where a curve is it just go strait
    Attachment 424064Attachment 424064Attachment 424064

  2. #2
    Junior Member
    Join Date
    Jun 2010
    Posts
    3765

    Re: Help! PVC Letters Curve not right

    We KNOW that Mach3 can do that, so I suspect your problem is backlash in the Y axis.

    Cheers
    Roger

  3. #3
    Member
    Join Date
    Sep 2005
    Posts
    1547

    Re: Help! PVC Letters Curve not right

    Is this a homemade router you designed or a commercial built model? It could be a number of things, have you used it before and it was fine or is this your first project?
    Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router

  4. #4

    Join Date
    Jan 2005
    Posts
    10006

    Re: Help! PVC Letters Curve not right

    Quote Originally Posted by rcs1010 View Post
    I have Mach3 running in a computer with windows 7 and a UC100 adapter for USB to the db25 pin on the router
    I use to the CNC to cut PVC letters, my problem is that the on the some part of the letter where a curve is it just go strait
    Attachment 424064Attachment 424064Attachment 424064
    The first thing to do is to check the drawing as most fonts use sort straight lines, I redraw the font using a radius where the straight lines are, or find another font that has the look you want if you can't redraw it
    Mactec54

  5. #5
    Junior Member
    Join Date
    Jun 2010
    Posts
    3765

    Re: Help! PVC Letters Curve not right

    The first thing to do is to check the drawing as most fonts use sort straight lines,
    Very good point! Especially if the original outlines were for a smaller size.

    The thing to do would be to try carving a real circle, using G2/G3 commands.

    Cheers
    Roger

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