Hi David and thanks.
Spray finish but still not decided on the colour. Have got 5 here that I like so it'll be one of those.
Thanks Ant. What sort of feed speeds, rpm, and depth of cuts were you using? I suspect it takes quite a while to get all the way though a sheet of the alum.
Ah. Etch! I suspect that's where I've gone wrong in the past. It's not something I've done very often, but I'll remember to do that next time I attack some.
Latest updates on the speakers looking superb BTW.
Cheers Gordon 
1.5mm DOC, 800mm/min and 9000rpm with a 6mm single flute cutter. This is about the quickest you can go if you want a good edge finish. I have had it at 3mm with 1m/min but was getting deflection of the gantry/cutter. Any more than that and I think it would significantly shorten the life span of the machine or you'd start breaking cutters.
You can get by cutting aluminium on these CNC routers and get some nice results with the right cutters being careful to dial in your feeds and speeds but I wouldn't fancy doing it often on larger jobs. Its fine for things like amplifier plates and such though.
1.5mm DOC, 800mm/min and 9000rpm with a 6mm single flute cutter. This is about the quickest you can go if you want a good edge finish. I have had it at 3mm with 1m/min but was getting deflection of the gantry/cutter. Any more than that and I think it would significantly shorten the life span of the machine or you'd start breaking cutters.
You can get by cutting aluminium on these CNC routers and get some nice results with the right cutters being careful to dial in your feeds and speeds but I wouldn't fancy doing it often on larger jobs. Its fine for things like amplifier plates and such though.
Thanks for the info. That's faster/deeper than I was expecting TBH. What's the cutter you were using? I suspect my carbide spiral cutters would be capable of alum, but they're 2 fluted.
I've got a couple of (non-loudspeaker) related ideas I'm considering, and I'd love to try them in aluminium. They're small, so I would be happy trying just 1mm DOC, but I'm worried my router may not be too great at 9000rpm.
Nice. I particularly like the sock/underpants support for the front baffle
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Nice. I particularly like the sock/underpants support for the front baffle
The secret to high end audio has been revealed!
..underpants support for the front baffle
The secret to high end audio has been revealed!
Well, it is under the crotch of the loudspeaker, no?
Well, it is under the crotch of the loudspeaker, no?
Rhodium plate 'em and folks will lap 'em up. Every pair of loudspeakers will be wearing keks
Not sure TBH. Aesthetically, they look a little "flabby", but I guess that's just my opinion.
The irony is that they appear to be constructed from carbon fibre, but weigh 900lbs each, which is kinda not the point with cf if you think about it
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Its getting to my favourite part of any build. Spraying! I've been agonising over colour choices for more hours than I dare admit. Here's the one's that I've settled on.
First is a metallic black, which is a little more interesting than the usual straight gloss black.
Pearl white. For such a simple colour I've had a hard time tracking down the one I wanted. Most of the pearl whites are slightly creamy and I was looking for a clean looking white.
Not so subtle here is a deep red candy tint over a shimmering silver. Looks stunning in the flesh.
And finally a blue pearl.
First is a metallic black, which is a little more interesting than the usual straight gloss black.
Pearl white. For such a simple colour I've had a hard time tracking down the one I wanted. Most of the pearl whites are slightly creamy and I was looking for a clean looking white.
Not so subtle here is a deep red candy tint over a shimmering silver. Looks stunning in the flesh.
And finally a blue pearl.
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