1200mmX900mmX170mm 4axis cnc

[Clive S]

90x45 each tube Clive? And what spacing between for the screw can we say that is ideal?

Not sure what you mean by this the two profile are fitted together to make an L so the lower one is horizontal with the other one sitting on top vertical, the BK and BF bearings for the screw will fit the slots in the profile

[Nickhofen]

Not sure what you mean by this the two profile are fitted together to make an L so the lower one is horizontal with the other one sitting on top vertical, the BK and BF bearings for the screw will fit the slots in the profile

Thanks Clive, now I get it.

[Nr1madman]

Not sure what you mean by this the two profile are fitted together to make an L so the lower one is horizontal with the other one sitting on top vertical, the BK and BF bearings for the screw will fit the slots in the profile

You are correct as always ;) but I think the smaller 80x40 was okay strength wise, just alot more handy with the 90x45 because of the bearings and the clever bolt on approach

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[Clive S]

You are correct as always ;) but I think the smaller 80x40 was okay strength wise, just alot more handy with the 90x45 because of the bearings and the clever bolt on approach

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Exactly, better job all round the bolt holes are perfect for the 45x90

[Nickhofen]

After some sleepless nights watching some video tutorials about Fusion 360 CliveS point me, thanks Clive, I came up with this.

The questions now are:
Can I use two pieces from this aluminum extrusion for the Y axis, not complete on the photo, and screw them them at left and right on the supports?
And what extrusions can I use for the X(long) axis, to support the Hiwin rails and screws.

http://www.ebay.co.uk/itm/like/17233...?ul_noapp=true

[Nickhofen]

I was thinking the option of using aluminum extrusions for the axis, since this way there is no need for drilling ,tapping and leveling with epoxy!

[Clive S]

Can I use two pieces from this aluminum extrusion for the Y axis, not complete on the photo, and screw them them at left and right on the supports?

Yes use two pieces one flat and one upright like an L. Then drill the upright one down the channel slot and bolt it to the flat one with tee nuts M6 90mm cap head

[Nickhofen]

Thanks Clive, always so helpful!
Can I use the same extrusion for the x(long axis ) to bolt 20mm rails and ballscrew on? Or I need a thicker extrusion?

[Clive S]

Thanks Clive, always so helpful!
Can I use the same extrusion for the x(long axis ) to bolt 20mm rails and ballscrew on? Or I need a thicker extrusion?

Its very nice using extrusion (heavy duty) because the slots it the 90x45 are exactly correct for the bk and bf bearings and can be mounted with tee nuts 6MM the 20mm rails will also mount into on top of the slots. You would have to work out how to fix the extrusion to your frame.

The ends of the extrusion can also be tapped without drilling for M12 bolts. with a spiral tap in an electric drill.

[Nr1madman]

Yes use two pieces one flat and one upright like an L. Then drill the upright one down the channel slot and bolt it to the flat one with tee nuts M6 90mm cap head

Hmm I'm at this stage myself but I was thinking about drilling through the bottom extrusion and use tee nuts in the upper extrusion and cap head screws with washers to fill out the t slots. Then use the holes I drilled to tighten the screws. What do you all say about that?

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