Hi, I also have one of the Chinese 6040 routers with ball screws.
When i do Z cuts or drilling in aluminium it seems that my Axis starts to jump when the pressure of the cutter gets to big. The jump seems to come from the Y axis.
So i have decided to upgrade the Y axis to HiWin Linear guide rails, now the question is if i should go with the HiWin 15 or 20 and use 2 bearing blocks or one bearing block per side
I am thinking if I go with HiWin 20 then use 1 bearing block, if I go with HiWin 15 use 2 bearing blocks, any comments are welcome.
Also the X axis is not parallel to the surface, I am experience a shift of about 1mm from one end to the other, which i need to address as well.
Please let me know if someone already did a update like this and can share some insights.
The second upgrade I would like to do is upgrading to a smoothstepper ethernet version (allready bought) and then upgrade the steppers to closed loop steppers from leadshine.
Maybe if possible upgrade the spindle to a ATC (anyone has a different solution for changing tools quick).
I have about a total of $1200 to upgrade the machine.