I would like to use my tappits to spell out JACK to put on top of my cake. Will it work to cut out 2 of each letter in gumpaste, let them dry, glue them together with a piece of wire between them and then put them standing on top of the cake? Thanks in advance. If there is a better way please advise.

If you are using the tappits they may be too small for the top of a cake...They are only about 1.5 inches tall.

I haven't done this before with the tappits since I only recently got them, but I have done it with the Wilton letter cutters, which are even smaller than tappits. So I say the tappits should work great! What I do is cut out one of each letter I'm using, and I go ahead and carefully stick the wire in the letter, then let it dry. I try to stick the wire in the tallest part of the letter to give it a bit more support. Does that make sense? Here's a link to a cake I did, to give you a sort of visual:

http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1721424

Yes that is what I had in mind. Thanks for your help. Blessings...