Music From Outer Space’s Ray Wilson has introduced the Sound Lab Mini-Synth Plus, a DIY project described as a Sound Lab Mini-Synth On Steroids:
Are you ambitious! If so this is your project! This is not for the faint of heart synth diyer. There are kludges, value changes, two boards a new front panel. But when you are done you will have a truly cool piece of analog synth gear. If you’re looking for your next project and you’re a seasoned synth diyer this may be the one you’ve been looking for.
Details are available at the site.