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How do I prevent unwanted Z-axis vertical 'play'?

I'm trying to face-mill a piece of aluminium and finding that the end-mill (6mm diam, horiz feed rate = 3.00mm, cut depth = 0.35mm, spindle ~ 20000 (6 on makita router) is not cutting absolutely level - i.e. at constant z with respect to X,Y position. On light finger (vertical) pressure on stationary end-mill I see that the whole Z stage rocks slightly on its supporting extrusion. I've attached video to demonstrate this. This (X aligned) extrusion seems to be nice and stable. I've checked the various screw and nuts that are visible/accessible and all these seem tight. Please can you assist?

Many thanks in advance.

Phil.

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Hi Phil,

It sounds like your Z-axis may have a slight wobble that's affecting your cut level. Since you've already checked that screws are tight, ensure that the X-axis extrusion is properly aligned and that the gantry plates are square. Misalignment can cause uneven cutting depths. Also, confirm that the Makita router is securely mounted and that there is no play in the spindle mount.

We don't see a video attachment here, but after performing these checks and you're still having problems, kindly reach our technical support team at https://ooznest.co.uk/help/.

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Thanks for reply - all that I think should be tight is tight....

Video here: [video|9]

Best, Phil.

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@drphil Sorry we can't view the video here. Please reach out to us at https://ooznest.co.uk/help/ and we'll be happy to assist you from there.

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I thought I embedded the video using the build-in "add media" tool in this dialogue application... Will try emailing it to you....

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Author avatar Phil Hughes` will be eternally grateful.
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