Originally Posted by
Tartan
Do you have a LQS in your area? I went in to mine and asked for empty bolts and they were glad to get rid of them. You can cut them done for mini bolts and they are free. Are they as nice as the foam core ones? No, but the're FREE!
Those empty fabric bolts are not acid free. After a bit of time, they leave a white line across the fabric that is permanent. This happens, even it the bolts are not stored in light. It is not a good idea to use the cardboard bolts from the fabric stores at all.