This is a simple addition for "Ender 3D Auto Rewind Spool Holder Mount only on one side". I had the same issue as Black_Mesa_Industries mentioned in his make here. "My filament roll was so heavy that i really had to screw the nut tight to hold the rod straight. This resulted in the spring being squished between the MAIN_PART.stl and the spring housing resulting in the spring not working properly. Fixed this by adding a second nut on the other side of the MAIN_PART.stl with a little opening for the spring lip to rest in. The two nuts push on each other, holding the rod straight, and no pressure is forced on to the spring." Black_Mesa_Industries did not provide this file, so I made to post.

As listed in the original remix, You will need these parts from the original spool holder

• Clutch
• Dial
• Hub
• One of the springs. I chose the soft one
• NutCurved

From the original remix you will need

• Universal_Auto-Rewind_Spool_Holder_MAIN_PART.stl
• Universal_Auto-Rewind_Spool_Holder_NUT.stl

The hardware you will need is

• a 5/16"-18 threaded rod. You will only need about 7" of this
• 5/16"-18 nuts x3

Lastly you will need the sandwich nut I provide. This needs to be put into the print while it's printing. If you have cura a pause script might work. If you're like me, pausing the print and inserting it also works.