Three small adapters that allows a standard RAMPS+Mega Electronics kit to fit onto a RichRap 3DR printer: http://richrap.blogspot.co.uk/2013/07/3dr-reprap-delta-printer-part-1-release.html  These adapters fit over three of the screw posts that are meant for RUMBA electronics and provide a solid mount for RAMPS.The adapter's are based on an idea by Luke Turner, as mentioned on RichRap's blog. I couldn't find files for these so created some myself.