Some how I got involved with both Meccano and Juneero.
The latter was a metal modelling system that used up the raw materials used and except on a scrap basis did not provide to reuse and re-cycle all the parts.
The raw was mild steel strip, rod and angle and sheet (including rather nice corrugated metal) and was smaller dimensioned than Meccano. The rod in particular was rather skinny. Gears and wheels (and tyres) and nut and bolts were also available.
The material was worked with a rather natty guillotine/punch/folder that would punch holes and crop strip and angle to length and 90 deg bend strip. A useful tool but eventually mine went blunt and was thrown out. A hammer powered punch/jig coped with holes in sheet metal and a bending jig would bend rod and strip to various radii (I think I have still got this some where!) . Sheet metal had to be cut with rather cheap snips and reallyvneeded more skill than I had. A rather crude die was available to thread the rod (6BA?)
Juneero probably fostered more real skills than Meccano but it was for ever wanting more packs of raw material. The results , although not holely like Meccano , were never super realistic. It was surprising it last as long as it did.
I also seem to remember that there was another similar modelling system though more expensive. It had what now seems a neat feature of its metal processor in that it could punch rows of square holes so that you could cut nice internal holes and trim to a line without much distortion. Does any one remember what this was called?
John