[sdiy] Metal enclosures - DIY'ing ?

Roman modular at go2.pl
Thu Jun 14 07:40:35 CEST 2018 

I'm using 2mm 5754 for most of the things and it bends like a dream. It was made for bending.  But to bend a long side of the case you need industrial machine. Once I tried to do 45cm long side with simple hand-driven bender and it almost killed me. Not really, but it felt like that.  After that experience I mill 4mm wide groove 1mm deep and it bends a whole lot easier and also gives very nice edge. Not to mention the location of the edge is determined by milling and not accidental placement of the sheet in the bender.   Roman  Dnia 13 czerwca 2018 21:08 Roman <  sleepy_dog at gmx.de > napisał(a):   Thanks guys for the replies so far, despite my somewhat unfocused
      message ;-)      I don' want to bend 4 sides no, 2 is fine.   Ah yes, bend the long sides for the front panel for stability -
      good hint!      As for brittle 6061 aluminum - i remember having read something
      about some types which don't bend well at room temperature could
      be put into an oven, IIRC they axplicitly said baking oven, so no
      insanely high temperatures (although probably still a challenge to
      handle for bending).   I guess I need to research that more.   Don't know if such cheap bending device would allow it, but I
      wouldn't necessarily mind a not so tight radius, look at the
      MiniMoog Model D case, it has a huge radius, IIRC.   Will have to research about 5052 - I read softer aluminum is
      "gummier" and loads the tool more, my feeble router may not be
      made for that.      > Don't get me wrong im not trying to put you off though......
      Quite the opposite it's great to see someone willing to put the
      energy in to even thinking of the options :)   > Seems diy these days for many means paint by numbers kits
      that include a panel already punched and screened for them.       D-I-Y or die!      (ok, maybe not ;) But doesn't it have a ring to it)      - Steve         Am 13.06.2018 um 03:11 schrieb John Marshall:  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.     John L Marshall      wa7bsr at gmail.com    www.sound-photo.com www.sound-photo.com     From:   Quincas Moreira    Sent:  Tuesday, June 12, 2018 5:49 PM    To:    luther.rochester at gmail.com    Cc:   synth-diy mailing
              list    Subject:  Re: [sdiy] Metal enclosures - DIY'ing ?     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.     On Tue, Jun 12, 2018 at 6:50 PM luther
              rochester <   luther.rochester at gmail.com >
              wrote:  1.5mm aluminum should be fine for most
              panels, provided you have bends    in the long side (which provides a lot of extra strength).      Like you mentioned, you might not get good clean bends
              with those cheap    brakes (benders) though; I haven't used one, but a good
              one is 200+ KG.      As you If you want to be able to bend all 4 sides you need
              a box/pan    brake, which is much more expensive.      Also, depending on the brake you might be limited to how
              shallow you can    make the box (the side shown by '?' here):      +-----------------------------   |                                | <----?   +-o-                          -o-+      For example my, brake can only do about 40mm or larger for
              this side,    provided you want two bends.      If you're just doing one or two projects it might be worth
              finding a    fabrication shop that will make it for you. It would
              probably end up    being the same price or cheaper, and you might get better
              results.      --   luther               On 6/9/18 5:25 AM,    sleepy_dog at gmx.de  wrote:   > Hey list.   >    > I just looked at some pictures of Moog synths like
              Model D, and even    > more so, Voyager, again, and I must say I'm quite a
              fan of that kind of    > case design and the fact you can tilt the upper part
              up to your liking,    > and back in for less cumbersome transportation.   >    > Ok, apart from that, more generally: The upper part -
              metal case for    > audio electronics, with front panel.   >    > Is that steel, or aluminum, or more importantly,
              whatever it is -    > *could* you make that out of aluminum and it's be
              stable enough?   > Probably only depends on the thickness. But I have no
              experience with    > such things.   >    > So, is 1.5mm, or even 1.2mm, thickness of aluminum
              something that could    > work decently for a case roughly Moog Voyager case
              sized? (I would be    > willing "cheat" with some reinforcement bars here and
              there if that's    > what it takes ;))   >    > Why 1.5mm (1.2) alu? Because that's the max thickness
              (for alu) handled    > by the strongest of those manually operated sheet
              metal bending machines    > that are fixed with a sturdy vice or such, for longer
              lengths it's only    > 1,2mm. You turn a lever, presumably while making
              bear-like noises...    > Well, those are floatnig around on ebay (here anyway)
              for 100...200 EUR,    > depending on the max material length and thickness.   >    >    > There you read my assumption - that one could bend
              parts of such a case    > yourself. Perhaps not exactly like the Voyager - it
              looks like the upper    > "5/6th of a box" are one part, or at least bent
              around two axes - they    > would be in each others way if I tried that with such
              a contraption I    > guess. And then just a plate at the bottom.   >  www.youtube.com www.youtube.com   > But maybe one could bend two halves, one "grabs
              around" in vertical, the    > other in horizontal direction? Not only bending
              sides/front/back, but    > another slimmer rim, another 90 degrees, to drill
              holes into and fix the    > other part onto.   >    > (if it's not displayed with monospace font at your
              end, too bad ;))   > +-----------------------------   > |               |   > +-o-              -o-+   >    >    > Anyway, if it turns out that 1.5mm aluminum* is far
              too thin for this,    > at least for that size, I may forget about DIYing
              here (for things of    > that size anyway), as I don't think I'd buy something
              much more    > expensive than said contraptions for this purpose.   >    > * no harder than, I think it was called "6061".
              Because that's something    > I can actually route openings out of, with my weak
              China CNC router.   >    >    > - Steve   >    >    > ______________________________   > Synth-diy mailing list   >    Synth-diy at synth-diy.org   >  synth-diy.org synth-diy.org   ______________________________   Synth-diy mailing list      Synth-diy at synth-diy.org    synth-diy.org synth-diy.org      --  Quincas Moreira   Test Pilot at VBrazil Modular       ______________________________ mailing list
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