Haha yeah – didn’t think until I looked at more pics of ruined columns – often they don’t smash or shatter, just sort of lie separated. Ho hum – got plenty now!
Cheers – No, just 2mm plasticard. I cut a suitable rectangle, then cut off the corners at 45 degrees then just load of sanding. The hardware shop round the corner sells these really useful wet and dry paper ‘blocks’ for 50p, so I absolutely rinse those.