Quote Originally Posted by jfkansas View Post
If you are interested, I designed this to get rid of the little grub screws. It also increases the contact area on the heat barrier tube since it wraps tightly around it. With the stock design the grub screw will always push the tube to one side and leaves an air gap on the grub screw side.

It is designed to be easy to change the extruder heights and set the to exactly the same height.

http://store.wmdproducts.com/index.p...&product_id=62
they are for sale now ? buying one!!