What is the plan for the new ring kits for existing users?

[Steve_Hall]

@stuartri
You make an interesting point. After looking at the other linkage options:

• Laser Cut Wood Triangulation Kit
  (Assembly Instructions for Triangulation Linkage Kit · MaslowCNC/Mechanics Wiki · GitHub)
  Developed by @pillageTHENburn which is laser cut wood parts that make up an elegant solution. You can buy the kit for $35 on Etsy. There are multiple of smaller simple components, and that is good, but solving the problem with fewer parts often closes the gap on future possible malfunctions.

• Laser Cut Metal Steel Pantograph
  (Metal Top Pantograph kit available)
  Developed by @dlang is laser cut metal, simplifies the pantograph concept with fewer parts and different sled mounting location. You can buy this kit for $40 from dlang directly.

• Ring Kit
  This is the concept that I have been excited about. First of all there are no moving joints to worry about, and it arguably has the fewest parts. I personally believe that the ring kit is the simplest option, and it has my vote.

All of these concepts have been discussed in depth in the forum:

Throwing my hat in the sled modification ring

Since the very beginning of the project (even before the kickstarter launched), it’s been pointed out that if we made the router bit the center of where the chains anchored it would massively reduce the amount of computation needed to compute the sled’s position and make calibration much easier. If the router bit is the center of rotation, then the math reduces to a very simple case where we’re finding the tip of the triangle knowing the length of three sides. There are other positive benefits …