First off, I'd like to point out that I'm doing this free of charge, though tips are readily accepted. If you're interested, add me to your friend's list in-game with a note attached that you want a cutter/striker. All I require is you provide the materials, crowns and crystal energy. Here are the requirements for each:

2** Cutter:
5 Green Shards
2 Sharp Fangs
2 Monster Bones
400 Crowns
50 Crystal Energy

3*** Striker:
15 Green Shards
5 Sharp Fangs
4 Monster Bones
1 Bushy Tail
1,400 Crowns
250 Crystal Energy

I can also upgrade your Cutter, if you already have one (not bound to your character, of course), to a Striker for these supplies:
10 Green Shards
3 Sharp Fangs
2 Monster Bones
1 Bushy Tail
1 Cutter
1,000 Crowns
200 Crystal Energy