Holding Down Parts When Cutting Them Out

Home User Forum Tips & Tricks Holding Down Parts When Cutting Them Out

This topic contains 2 replies, has 2 voices, and was last updated by  dbornyk 8 months ago.

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  • #740

    This is a common question we get asked.

    You want to cut out a part but realize that, if you do, you will cut right into your aluminum table. Also the part will be free once cut and can move. Hopefully you are reading this before you tried your first cut out and not after 🙂

    Solution is pretty simple actually.

    Sacrificial board
    Make sure you put a sacrificial board under your work to allow the tool to fully cut out without damage to the table. I use MDF because it is inexpensive but use whatever you have around. Try to insure it is as flat as you can find.

    Two sided tape (my best friend)
    I always keep several rolls of two sided tape in the shop for these types of projects. As long as the workpiece and sacrificial board are flat and clean then this works great. Occasionally I have a larger piece that requires a bit more of a solid hold down strategy. In these cases I would consider nailing or screwing the workpiece to the sacrificial board from the back to really make sure it is secure.

    if you are a seasoned woodworker then you deal with hold downs all the time so if you come up with better strategies go right ahead……and fee free to post here to let us all know.

  • #845

    dbornyk
    Participant

    My favorite way of holding down and machining parts is this:
    I created 1 16″ x 21″ MDF Sacrifice Board and I Tape every piece to it. I’m very particular about what I own/invest in and this machine is not only an investment, but it’s beautiful, and I intend to keep it that way. Clean it and do all you can to protect it and maintain it and it will last for along time. The 3M Tape is easy to tear off the backing on the sticky side (two) but don’t leave it stuck to your model or it’s a pain to remove. The clear 2 sided tape (don’t remember brand) is thinner and comes off very nice, but the backing is difficult to remove when you are applying it to the machinable wood or material. If you want to use Birch for the Sacrificial board it’s really nice too.

    • This reply was modified 1 year, 5 months ago by  dbornyk.
  • #1235

    dbornyk
    Participant

    Here is my newest hold down idea:

    Doug Bornyk’s Iconic CNC Hold down

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