Yes, the metal spring kits were one thing .. I had one of those too (until its full disassembly for spare parts) .. but in that era, to my 8 year old eyes at th

Yes, the metal spring kits were one thing .. I had one of those too (until its full disassembly for spare parts) .. but in that era, to my 8 year old eyes at the time, the spring kits 'looked old' in comparison to the ultra cool battery-powered, portable, sci-fi looking denshi blocks .. whereas some of us old kids have lego-brick trauma, mine was the denshi-block, always one on the floor to step on, bare-foot .. but man did I love carrying that thing around. But then, I'd had a Dick Smith Electronics[1] "breadboard" period, the year before, where the components were literally drilled into flakey particle-boards over the schematic, and .. that was fun too. I "upgraded" from the Denshi blocks and the breadboards, to a soldering iron station and the Fun-Way PCB's .. burned my fingers on the synthesizer kit .. and the rest is history. [1]-https://ia600409.us.archive.org/7/items/dicksmithsfunwayintoelectronicsvolume2/Dick%20Smith%27s%20Funway%20into%20Electronics%20Volume%201_text.pdf https://ia600409.us.archive.org/7/items/dicksmithsfunwayinto...