Ender-3 Adjustable Spool Holder, filament guide and Z rod holder

myminifactory

I have printed one for myself and tested it. The original m4 screws from the stock spool holder can be recycled and used to clamp the spool holder adapter V2. The z-rod holder works well and I have inserted a 608 bearing to hold the z rod firmly in position. Next, I will print the other spool holder parts and mount it on top. I just realized that the z rod is slightly higher than the top 2020 frame, so I made a slight modification to the adapter, which I've named V2. Now you can insert a 608 bearing to hold the z-rod securely in position. I designed this at my work place and haven't printed one for myself yet to test it out. This is a spool holder adapter that combines the spool holder and filament guide as one unit. The aim is to use 608 bearings to reduce the friction generated when the spool turns on the stock spool holder that comes with Ender-3. So instead of sliding, now it rolls smoothly, allowing the filament to be fed into the extruder easily without exerting too much force. The problem I had with the original spool holder is that when the spool is new or the spool hole is smaller, the filament spool can't roll freely on the spool holder. Instead, it depends on the extruder motor to pull the filament, resulting in under-extruded regions of the print. This weakens the print and wastes time and material. I remixed this design from the spool holder adapter I created for CR-10. Installing the adapter is easy - simply slide it into the top left-hand corner of the 2020 aluminum extrusion. Then, mount the spool holder first. To prevent the adapter from moving, there are two 3.5 mm holes to allow you to secure the adapter to the 2020 extrusion with t-nuts.