I am rather new to the world of calligraphy and all the bells and whistles that go with it. I have done tons of research almost a frightful amount. For this past Christmas I got a hinkler complete kit from the book store as a gift. Now these pens are alright and I know they are just cheap beginner pens, however they do have potential. I got to thinking about if it were possible to make/use parts from let's say pens from Staples, Walmart, etc to attach to the grip/nip piece. I have tried scouring the internet to no avail except a headache for too much information. I know silicone lube can make a seal. What I am looking for is any information on factory type/brand store named pens that have the internal threaded barrel which would possibly make up with my pen nibs. I do have four of them. I would prefer a clear barrel though in the end I am willing to try anything.