I am thinking of building a guitar for my kid, who's turning 5 soon. Not that she's shown any interest in playing (at least playing actual recognizable things, she does like to grab a uke and strum randomly while singing whatever comes into her head), but you know. Now I can't exactly build her a full size guitar, I need to go for something a bit smaller, with a string spacing suitable to tiny hands. My idea is a 6 string, strung light (8s?), tuned in standard but an octave up, the idea being she can simply scale up when she's old enough. Hopefully the strings should end up feeling about as floppy as 8s on a full size, I suppose. Does anyone know how I go about calculating the scale length I need to achieve this? I've been looking at 3/4 size guitars for inspiration but those are actually only scaled down around 7/8s, that's almost 90% of a full size guitar. I was hoping to go smaller. I think I'm aiming for something the size of a Stew Mac mini guitar, they even say to tune those an octave high, but those have standard string spacing. The other question is, where does one find tiny 6-string tele bridges? I think I'll need to find some CBG blade pickups and ukulele tuners. Maybe I should avoid complication and go with a non-adjustable bridge, Dano style.