I can see the Sierra kits from Berea Hardwoods. They look exactly like the Manhattan from Rockler. I have not found the Sierra at any other site that I've been to, although I know it is talked about a lot.
I purchased a laser cut kit from Rockler a few months ago. It stated that it was for a Sierra pen. I thought I would use it with a Gatsby. Lo and behold the inner diameter is different. Now I'm looking for the equivalent kit so that I can utilize the laser blank.
Rockler's Manhattan and PSI Gatsby use the same bushings. Yes, the twist is different but the bushings are the same.
Does the Princeton also use the same bushings as the Mesa/Sierra?The Sierra and the Gatsby are the same. However, the Manhattan uses different bushings and the tube length is different.
Also, The Wall Street II and the Sienna are the same as the Sierra and Gatsby.
The Princeton also uses the same tube and length as the Sierra/Gatsby/Sienna/Wall Street II.