400mm (15.75 Inches) TR8X2 Thread Printing Machine Review

My Ender 3 Pro came with a T8-8mm lead screw. These are T8 2mm lead screws which means you have more steps to move 1mm up or down and there should be less backlash as well as better torque meaning you have extra mass on the X -axis without compromising speed (in any case, movements along the Z-axis should not have high speed). The standard lead screws for the Ender 3 are 365mm long and slightly longer to allow for longer verticals. My direct drive Ender 3 Pro now has a maximum Z-height of…

This is not Precision Thread Play Assembly. I had to remove them as they were rough. This in turn led to poor printing results. The spring creaks, probably brass? Parts move in locking grooves. Maybe if I change them enough to remove the roughness? Yes I have used them with 8mm pitch, 2mm pitch and 2mm lead screw. On the other hand, it turns out that the controller cannot function smoothly or at all. You need to be able to run at such a high speed that the stepper/controller just gives up…

Excellent thread quality on these lead screws. If you are wondering how much you will get: FYI if you have 1 piece you will get 2 lead screws. I'm returning add-ons that I accidentally bought. I upgraded the 2 leadscrews of the Anycubic i3 Mega S printer. They need to be shortened from 350mm to 330mm. 350mm would be too long for the i3 Mega S. You'll need a power blade/grinder to cut them down (they actually cut steel quite easily), then you'll need to file or grind/grind the ends of the…