super time

[gonper]

Interesting, why are you printing the gear boxes that way?
You are suppose to rotate them so the flat part is touching the build plate.
Maybe is my mistake and i should upload the STL files parts on the correct printing orientation.

As well the tolerances are important so I am going to create a calibration/tolerances test piece, so people can check their machines before printing.

[CREEPERBOB]

Originally Posted by gonper

Interesting, why are you printing the gear boxes that way?
You are suppose to rotate them so the flat part is touching the build plate.
Maybe is my mistake and i should upload the STL files parts on the correct printing orientation.

As well the tolerances are important so I am going to create a calibration/tolerances test piece, so people can check their machines before printing.

I printed them upright to get clean surfaces where the bearings sit.

[gonper]

Originally Posted by CREEPERBOB

I printed them upright to get clean surfaces where the bearings sit.

OK, but tolerances are included taking in account the printing orientation so if printed in another orientation it can be problematic. Didn't tested so I don't know.

[CREEPERBOB]

Originally Posted by gonper

OK, but tolerances are included taking in account the printing orientation so if printed in another orientation it can be problematic. Didn't tested so I don't know.

I haven't tried bearings in it yet so I don't know but with that section pointing up it gives a great finish.
I'm guessing it's all for knot anyhow if you are going to redesign for different gearing.
I sure like your design and think it will do good work once it is all dialed in .

[gonper]

I know that the printing of that gearbox part failed due a power cut.
But looking close to your printing pictures I can see that is has a big layer shift on the Y axis at the begging of the print.
I got an Anet A6 (almost the same as your Anet A8 ) and had the same problem. I fixed it reducing the travel speed to 110mm/s or less and travel acceleration to 4500mm/s2 or less.

I think this issue is provably caused due to low current to the stepper motors but did not had time to check that out yet...

[CREEPERBOB]

Originally Posted by gonper

I know that the printing of that gearbox part failed due a power cut.
But looking close to your printing pictures I can see that is has a big layer shift on the Y axis at the begging of the print.
I got an Anet A6 (almost the same as your Anet A8 ) and had the same problem. I fixed it reducing the travel speed to 110mm/s or less and travel acceleration to 4500mm/s2 or less.

I think this issue is provably caused due to low current to the stepper motors but did not had time to check that out yet...

Yea I was trying to figure that out.
Actually it is happening to the support layer, it shifts about 2.5 'mm but the main gearbox doesn't have the shift.

[gonper]

Originally Posted by CREEPERBOB

Yea I was trying to figure that out.
Actually it is happening to the support layer, it shifts about 2.5 'mm but the main gearbox doesn't have the shift.

Actually I can see that the gearbox does have the shift as well, but it is difficult to see on the picture as there is little part printed at that high.