up here in Canada, unless you are near a major center, caps are hard to find, and expensive when you do.(at least where I am, can`t even get BP without special ordering it) I have tins of caps marked $10.00, and have seen them as high as $14.00. picked up a Tap-o-cap. dug out the compound from the red plastic caps, need about 5 red caps for 1 tap-o-cap. mixed with alcohol and packed it in. topped with a tiny bit of 3f BP and capped that off with a dot of cheap newsprint paper and spray hair wax. wax stays soft but sticky, not hard and brittle like hair spray. not sure about long term storage. made about 20 while watching tv, and tested 10. worked every time. PITA, but the tool is in the toolbox and a stack of the red plastic toy caps with it, just in case. only dicey part is getting the compound out of the red caps.