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-   Cutting various materials - bit selection, feeds, speeds (http://www.mechmate.com/forums/forumdisplay.php?f=82)
-   -   Cutting Aluminum foam core (http://www.mechmate.com/forums/showthread.php?t=4410)

litemover Sat 15 February 2014 14:16

Cutting Aluminum foam core
 
Does anyone happen to know if a Chinese spindle, 4kw, would be able to handle cutting 1/8" aluminum foam core board? I have one small project I need to cut some windows out of it and bend it. The aluminum looks to be super thin and I'm sure that others cnc it, I just don't want to risk any bearing problems on my router.

Any ideas?

Thanks,
Chris

Quadro Sun 16 February 2014 03:41

I've just come inside from cutting 3mm PVC sandwiched between aluminium (ACM), I guess foam is easier.
I use a 3kw spindle, 2mm single flute at 800mm/min. If I was using a larger bit I would cut faster.
Add a bit of air for cooling and leave the protective cling plastic on until after cutting seems to pull the 'hairy' stuff off.

Good luck

litemover Tue 18 February 2014 00:26

Thanks! What are you setting your spindle speed at? Also down ur or upcut o flute?

Quadro Tue 18 February 2014 13:27

1 Attachment(s)
Spindle speed fastest (I don't know exact rpm:o). Up cut bit.
For miter joints i use a modified 90 deg cutter on the fold lines and cut not quite all the way through.
To modify the 90 deg cutter I just ground the tip of so that there was about 0.5mm flat.

litemover Tue 18 February 2014 16:52

Very nice! Do you place the presentation face face up or face down? Looks fantastic! Thanks for the help.

Quadro Wed 19 February 2014 02:41

Cut face down.

danilom Wed 19 February 2014 15:59

4mm single flute + 90 degree 2mm flat point

up to 4000mm/min


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