As mentioned in the main article on using Milk Jugs to Vac Form with, I realised that a little extra sheet was needed when using the Mayku Formbox. It's rather nice to see that some months after posting this and Makyu released their own version, for those who might not have the workshop or the DIY skills to realise it. Pretty nice when these little beta tests come full circle, and it's credit to the startup to consider doing small updates like this.