We've now got quite a range of 12 Volt solar powered machines from good old 1940's Singer straight stitch ones to some 1970's zigzag and multi stitch machines. There's also a 1961 Singer model 201, technically a domestic machine but well capable of sewing through several layers of military tent canvas. As all the electrics are 12 Volt there's no safety issue with operating on grass. Power level is very low; on average machines take about 10 Watts when sewing steadily with a small surge of 30 Watts or so when starting up. All circuits are fused well within conductor capacity and batteries are either kept in secure purpose built boxes or built in to the support vehicle
We've also got several interesting and diverse classic handcrank machines of transverse shuttle and boat shuttle types up to 130 years old, all in good condition and able to sew well. Many people find these fascinating and are impressed at the facility to sew in a field without any external power source.
Various stall setups are available. We generally only do outdoor workshops as the central activity is solar powered. However, there's room for flexibility particularly as we're still in a startup phase so if you want something indoors with a range of interesting vintage handcrank machines it's worth asking. We have standard risk plans developed over the last five years and a £5M Public Liability policy covering the activity. A layout plan (PDF) can be downloaded below: