I am wondering why you laid out the objects at those angles on the print bed. It seems that if they were placed parallel with sides of the bed and butting up right next to each other, that the print would be more efficient in print head movement create a print faster?
@upcycle Those orientations were chosen as a test, with both short and long head movements. It's actually a single object, not 3 objects, and the purpose of the test was to observe the effects of acceleration code that varies the speed of travel over distance. Back then we were printing 3 times or more slower at a fixed speed. Acceleration varies the speed, going fast on straightaways and slowing down for direction changes, this test demonstrated that, with short and long straight lines.
Standard Prusa Mendel, with LM8UU linear bearings on X and Y, but I doubt the bearings make much difference for speed. The brass bushings I had were terrible so I replaced them. The frame isn't any more stiff as any other Prusa as far as I know. The big difference was the acceleration math in the firmware, it brakes before reaching the end of travel which really cuts down on banging X and Y around a lot. This was quite some time ago, the code has matured a lot since then I'm sure.
This is pretty amazing! What kind of printer is that? Is that a standard Prusa Mendel? How did you get the frame so stiff? Your machine is barely moving at all...
I wonder if we could use that stl as a base for calculating estimated print times and record breaking? Say you at 180mm/s can print this in 7 minutes with all solid layers. And I take 21 minutes. All of my prints would take 3 times longer than yours at the same settings.
I am wondering why you laid out the objects at those angles on the print bed. It seems that if they were placed parallel with sides of the bed and butting up right next to each other, that the print would be more efficient in print head movement create a print faster?
upcycle 2 weeks ago
@upcycle Those orientations were chosen as a test, with both short and long head movements. It's actually a single object, not 3 objects, and the purpose of the test was to observe the effects of acceleration code that varies the speed of travel over distance. Back then we were printing 3 times or more slower at a fixed speed. Acceleration varies the speed, going fast on straightaways and slowing down for direction changes, this test demonstrated that, with short and long straight lines.
OhmEye1 2 weeks ago
@OhmEye1 thanks.
upcycle 2 weeks ago
Comment removed
looncraz 1 month ago
Hmmmm... Higher speed mean less scrap, doesn't it?
lmojzis92 2 months ago
Standard Prusa Mendel, with LM8UU linear bearings on X and Y, but I doubt the bearings make much difference for speed. The brass bushings I had were terrible so I replaced them. The frame isn't any more stiff as any other Prusa as far as I know. The big difference was the acceleration math in the firmware, it brakes before reaching the end of travel which really cuts down on banging X and Y around a lot. This was quite some time ago, the code has matured a lot since then I'm sure.
OhmEye1 2 months ago
This is pretty amazing! What kind of printer is that? Is that a standard Prusa Mendel? How did you get the frame so stiff? Your machine is barely moving at all...
McNugget6750 2 months ago
"fuck! mistake where is my eraser?
Plizi 3 months ago
Pololu drivers on the RAMPS 1.2 board. The steppers I bought used on ebay, type 103H5208-0842 or -1241 or -0841 from tony34306.
OhmEye1 3 months ago
what steppers and stepper drivers are you using?
66fygar 3 months ago
how much
CHILDRENOFBOBODOM 4 months ago
I wonder if we could use that stl as a base for calculating estimated print times and record breaking? Say you at 180mm/s can print this in 7 minutes with all solid layers. And I take 21 minutes. All of my prints would take 3 times longer than yours at the same settings.
GeoDroidJohn 10 months ago