8. Prepare a blank as if for the slimline pen (7mm) but leave it a few mm longer than normal as we won't be putting a centre band on.
9. I don't know if anyone else does this but I save some sawdust and shavings and when the tube is glued into the blank with superglue, I dunk it in the shavings and it goes off straight away, better than any accelerator. (I diversify)