Thank you Rita! I'll give it a go! xx

They look exactly the same as the Sewline ones so here's what I do. Take the empty filler out of the pen - wind it up as far as it will go and then pull it off. Next open the refill cap and push the inner from the gluestick onto the refill (which is still all tucked away inside the refill container. Rewind the gluestick slowly making sure you have actually attached the glue refill to it. It probably won't rewind all the way into the glue pen but leave about 1/4" visible at the top. I hope that helps.

I am sure I am being extremely dense, but I cannot work out how to refill my Karisma fabric glue stick! The refill is in a plastic tube with a little blue cap over the end. The instructions are in Japanese. I hope someone here can explain it to me, please.