Anyone sanded their own wooden floors?

This is a bit of a desperate call for help...we've been sanding our wooden floorboards this weekend and have run out of the resin wood gap filler (the kind you mix with sawdust to blend in with the floorboard colour) and I wondered if anyone here had done this work themselves and therefore might have some leftover resin they could sell to me if I came to get it today?! The sanders go back tomorrow and this would save extending the hire period.

A very long shot I know but no stockists are open today (its only stocked in specialist places), and nothing else is paintable/wont shrink (like mixing PVA with sawdust, or using normal wood filler).

Donna