Inlays, and woes

I got cracking on the inlays. Li gets her name at the 12th fret, the resos get a symbol that will sort of go over the 12th. I routed out the channels with my Proxxon router. 

And the wee symbol I chose for the twins’ fretboards. I routed those freehand and they turned out ok. 



Then I mixed some milliput and filled the cavities. I’ve done that before with great results, it turns hard and sort of bone white. It’s supposed to harden in 12 hours...



... but that old shite had gone old and turned to, you guessed it, shite. Here I am digging it all out after a week or so. I’ve since proceeded to fill with another material. Can’t believe the limited shelf life, I mean what’s six years?!