Creality K1 & K1Max M3x8Bolt Sleeve

Its a fix for my K1, after it had extrusion issues. This simple fix solved the issues with extruder for me, hopefully helps you aswell.

The extruder gears (the ones that pushes the filament) in K1 is attached to the chrome plated base with these two red painted machined bolts. The problem is they are not properly tightened. Instead creality decided to glue them to the threaded holes on the base. I guess that's because the base is made out of aluminum which is softer metal, and the bolts are steel which is harder. And if you overtighten them, you might strip the threads. So they might try to avoid that. But this means over time with the heat and pressure glue gives in and gears stops engaging properly. Thats why most of us thinks its clog issue but it's not, it's the gears.

All I've done is get 2 pcs of M3x8 mm black bolts (black colored ones are hardened so you can grip them better) and couple of M3 washers, i also ABS printed a sleeve for the bolt to center them, but you don't need to do that, just eyeballing it works, I tried. Clean the threaded holes, properly tighten the new bolts to the base with washers, but be careful not to overdo it, remember you might strip the thread.

After i did this fix, It did not only solve the problem immediately, it makes it even better than before. I've been printing abs for 5 days straight without single extrusion issue.