<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>6061-T6 is the most common aluminum alloy. However it is brittle and my crack if bent too sharply. T6 is the temper rating. 5052 is more easily bent in a tight radius.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>John L Marshall<br>wa7bsr@gmail.com<br>www.sound-photo.com</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:quincas@gmail.com">Quincas Moreira</a><br><b>Sent: </b>Tuesday, June 12, 2018 5:49 PM<br><b>To: </b><a href="mailto:luther.rochester@gmail.com">luther.rochester@gmail.com</a><br><b>Cc: </b><a href="mailto:synth-diy@synth-diy.org">synth-diy mailing list</a><br><b>Subject: </b>Re: [sdiy] Metal enclosures - DIY'ing ?</p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>The way I do it is 2mm Aluminum, bent only on top and bottom, then I make wood sides. Much easier than trying to bend all 4 sides, and looks good too! That's for the Chassis, then goes the panel, bolted to the wood sides and to L brackets attached to the aluminum chassis.</p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Tue, Jun 12, 2018 at 6:50 PM luther rochester <<a href="mailto:luther.rochester@gmail.com">luther.rochester@gmail.com</a>> wrote:</p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>1.5mm aluminum should be fine for most panels, provided you have bends <br>in the long side (which provides a lot of extra strength).<br><br>Like you mentioned, you might not get good clean bends with those cheap <br>brakes (benders) though; I haven't used one, but a good one is 200+ KG.<br><br>As you If you want to be able to bend all 4 sides you need a box/pan <br>brake, which is much more expensive.<br><br>Also, depending on the brake you might be limited to how shallow you can <br>make the box (the side shown by '?' here):<br><br>+--------------------------------+<br>| | <----?<br>+-o- -o-+<br><br>For example my, brake can only do about 40mm or larger for this side, <br>provided you want two bends.<br><br>If you're just doing one or two projects it might be worth finding a <br>fabrication shop that will make it for you. It would probably end up <br>being the same price or cheaper, and you might get better results.<br><br>--<br>luther<br><br><br><br><br>On 6/9/18 5:25 AM, <a href="mailto:sleepy_dog@gmx.de" target="_blank">sleepy_dog@gmx.de</a> wrote:<br>> Hey list.<br>> <br>> I just looked at some pictures of Moog synths like Model D, and even <br>> more so, Voyager, again, and I must say I'm quite a fan of that kind of <br>> case design and the fact you can tilt the upper part up to your liking, <br>> and back in for less cumbersome transportation.<br>> <br>> Ok, apart from that, more generally: The upper part - metal case for <br>> audio electronics, with front panel.<br>> <br>> Is that steel, or aluminum, or more importantly, whatever it is - <br>> *could* you make that out of aluminum and it's be stable enough?<br>> Probably only depends on the thickness. But I have no experience with <br>> such things.<br>> <br>> So, is 1.5mm, or even 1.2mm, thickness of aluminum something that could <br>> work decently for a case roughly Moog Voyager case sized? (I would be <br>> willing "cheat" with some reinforcement bars here and there if that's <br>> what it takes ;))<br>> <br>> Why 1.5mm (1.2) alu? Because that's the max thickness (for alu) handled <br>> by the strongest of those manually operated sheet metal bending machines <br>> that are fixed with a sturdy vice or such, for longer lengths it's only <br>> 1,2mm. You turn a lever, presumably while making bear-like noises... <br>> Well, those are floatnig around on ebay (here anyway) for 100...200 EUR, <br>> depending on the max material length and thickness.<br>> <br>> <br>> There you read my assumption - that one could bend parts of such a case <br>> yourself. Perhaps not exactly like the Voyager - it looks like the upper <br>> "5/6th of a box" are one part, or at least bent around two axes - they <br>> would be in each others way if I tried that with such a contraption I <br>> guess. And then just a plate at the bottom.<br>> <a href="https://www.youtube.com/watch?v=ku0BdjNasko&t=2m32s" target="_blank">https://www.youtube.com/watch?v=ku0BdjNasko&t=2m32s</a><br>> But maybe one could bend two halves, one "grabs around" in vertical, the <br>> other in horizontal direction? Not only bending sides/front/back, but <br>> another slimmer rim, another 90 degrees, to drill holes into and fix the <br>> other part onto.<br>> <br>> (if it's not displayed with monospace font at your end, too bad ;))<br>> +--------------------------------+<br>> | |<br>> +-o- -o-+<br>> <br>> <br>> Anyway, if it turns out that 1.5mm aluminum* is far too thin for this, <br>> at least for that size, I may forget about DIYing here (for things of <br>> that size anyway), as I don't think I'd buy something much more <br>> expensive than said contraptions for this purpose.<br>> <br>> * no harder than, I think it was called "6061". Because that's something <br>> I can actually route openings out of, with my weak China CNC router.<br>> <br>> <br>> - Steve<br>> <br>> <br>> _______________________________________________<br>> Synth-diy mailing list<br>> <a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a><br>> <a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a><br>_______________________________________________<br>Synth-diy mailing list<br><a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a><br><a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a></p></blockquote></div><p class=MsoNormal><br clear=all></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- </p><p class=MsoNormal>Quincas Moreira<br>Test Pilot at VBrazil Modular</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>