Hi everyone,

I'm new to the forum and I have a problem. I've been trying to shine up some flat gold and silver pieces in my tumbler. I'm using a mixed fine s/s shot I bought from UKGE as it was far cheaper than Cooksons! It has two sizes of fine pins in it plus 2 sizes of balls, bicones and lozenges. The problem is that it is leaving a pin-prick effect on the flat pieces ie gold cufflinks, flat silver bracelet, flat silver dog-tag and a gold ring with flat surfaces. Am I using the wrong medium? It works fine on heavy curb chains. I have gone back to using my walnut shells for today until I can find out what to buy. Any advice will be much appreciated