Tip: Breadboarding chassis idea

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Here's my solution for a prototyping chassis.

The H-frame is borrowed from an antique transistor tester chassis (what is a transistor, Mommy...). Even the tallest tubes, placed on the middle deck, are within the H-profile, so it can be rolled on any side safely.

Instead of drilling all sorts of socket holes on the steel deck, I use disposable top boards made of laminated floor chipboard. Here's a Mullard EL84 prototype. If space becomes too clogged, heavy parts can be bolted to side frames.

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Source:http://www.klausmobile.narod.ru