I am part of a group that is keen to learn about glass fusing and what we can achieve, a member of the group has brought some of the glassline pens, also the tip set, we can't, however, figure out how to fit any of the tips to the pens, can anyone help, please?

Remove the black cap on the glassline pen an then the tip set just pushes on to the top of the nossel. 

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