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Multi-Way Conventional loudspeakers with crossovers

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Old 4th May 2013, 08:36 PM   #641
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Some finishing done today.

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Old 4th May 2013, 08:41 PM   #642
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Quote:
Originally Posted by David Gatti View Post
Outstanding work Shin. Have you decided on a final color and finish?
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.
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Old 5th May 2013, 09:00 PM   #643
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Exceptional work!I was playing with the idea of making something similar to the smaller standfloors, for my ScanSpeak 30w-4558t00 subwoofers,but the curved lines and the lack of a CNC machine made me sattle on Avalon's Isis,once again congrats for the high-end quality work!
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Old 5th May 2013, 09:18 PM   #644
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That's very kind of you Aircirc. Thanks.

I don't you think you can go far wrong with the Isis. Its a solid design.
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Old 6th May 2013, 07:01 PM   #645
sploo is offline sploo  United Kingdom
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Quote:
Originally Posted by ShinOBIWAN View Post
Machine time was quite long compared to MDF but you have to go a lot slower and lighter. I did 8 parts in a day with each taking about 30-40 minutes. Most of that was the engraving - painfully slow.
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.


Quote:
Originally Posted by ShinOBIWAN View Post
They're sprayed with clear etch and then regular clear coat. If you don't etch then the paint will sit on top of the alu and flake off eventually.
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.
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Old 6th May 2013, 08:47 PM   #646
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Cheers Gordon

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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.
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.
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Old 10th May 2013, 08:47 PM   #647
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Here's a one off design for a member on here. They're veneering the cabinets and painting the baffles.

Drivers are RAAL 70-20XR, SS 15W Revelator and Seas L26ROY.

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Old 10th May 2013, 10:46 PM   #648
ScottG is offline ScottG  United States
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Nice!

Good to see the CNC finally paying off - beautiful work!
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Old 11th May 2013, 02:24 AM   #649
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Did you cut the baffle radii with a big radius-cutter?

Or with lots of passes with a ball-nose cutter?
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Old 11th May 2013, 02:55 AM   #650
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Thanks Scott.

It was done with a 12mm ball nose Mark.
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