Please post a pic when the work is at the point where you're comfortable showing it. I'm also using a mill, but its a bench-top model with limited movement. That really eats a lot of time when larger pieces are involved. On the upside, it's CNC, so I can engrave and fill panels without sending them out. Here are a couple photos of a subchassis I'm building for my current project. All of this is my own work, including setting the PEMs and anodizing the bias panel. It's nice to have this capability, but the work is tedious at times. I often wish I could concentrate on design and leave the mechanical stuff for someone else.lavrgs wrote: ↑Sat 06/05/21 5:15 pmMy design started yesterday but when I get to a point that it's ready for review I'll post it. With a 19+ inch run I may need some center braces. The cosmetics will probably be some kind of engraved plastic - last time I sent it out and it was too expensive- since I am doing a retrofit on my mill I would like to see if I can make something. That's a ways out - later this summer. I'm at a point where I should sell an amp before I make any more but I like what I have. The Mojotone clone may be used as a donor for transformers or may be sell it.TriodeLuvr wrote: ↑Sat 06/05/21 4:14 pmHow would you attach the pieces to each other? Angle aluminum? Or would you weld it together? I've been making chassis for hi-fi gear from rectangular aluminum extrusions. They're 1/8" thick, sized 10" X 2", 8" X 3", etc. I cut them to length, cut out the bottoms for working inside the chassis, then add front and rear panels that are anodized and engraved. It's a huge amount of time and work cutting all the pieces, and I probably won't continue this process when my current small inventory is used up.
I think there are more off-the-shelf solutions for instrument amps than for hi-fi. And they're cheaper, too. A pre-made chassis for the type of gear I frequently build would cost upwards of $400 if the shop did everything (anodized and/or painted and engraved/silkscreened).
It's a never-ending problem.
Jack
Jack
