can anyone suggest what i can do with larger size slate that leaves a good clean print with no small bits that look like there is no gloss finish

<r><ATTACHMENT filename="IMG_0434.jpg" index="0"><s>[attachment=0]</s>IMG_0434.jpg<e>[/attachment]</e></ATTACHMENT>Hi ive been reading all comments on slate its something I want to do i have good success with coaster size 480 sec 190oc med pressure then i go a size up with same settings and I have a ...