1 Topic by montressor (edited by montressor 2015-01-19 19:58:02)

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Topic: Printing Speed Gut Check

Just wanted a quick gut check from other Davinci owners on print times - want to make sure my print times aren't ridiculously long. Some of my prints seem to be taking far longer than it seems it takes others, and I want to verify I don't have some silly setting(s) that result in needlessly long print times. Granted, I'm printing at 0.1mm on my duo for this test, but even lower res prints seem to take me longer than other folks I'm reading about. Perhaps this is just a function of the Davinci Duo, in which case I'm cool with that.

As an example, I've attached two files. One is the STL of a test object from Make Magazine that I use as my default calibration object. The other is XML output of the Simplify3D settings for a recent calibration print I did with this object. Printing time was just over an hour, excluding setup, transfer, etc.

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deprime_test_r.stl 421.96 kb, 25 downloads since 2015-01-19 

hatchbox_abs_purple_4_noretract.xml 9.53 kb, 13 downloads since 2015-01-19 

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Davinci Duo, Repetier 0.92, OctoPi

2 Reply by carl_m1968

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Re: Printing Speed Gut Check

When I print .2 layers I usually have faster moves set at 20 max and moves that need to be precise at 15 or even 10. I have a 1.0 so printing at .1 reliably is out of the question on stock hardware. As for that Deprime test print, on my well tuned previous printer I could print it at .1 in just over an hour and a half at 100% fill. So your time is close to average. 3D printing is a slow process at higher res. If you want speed you would need a Delta design. They print at near twice to three times the speed of an A type machine like the Da Vinci. You can get kits for them in $400 range on eBay.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

3 Reply by montressor

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Re: Printing Speed Gut Check

Cool, thanks Carl. Just wanted to make sure I wasn't out of the ballpark on print times.

And funny you mention the Delta design - I'm a ways away from a second printer, but it's definitely one I'm really interested in.

Davinci Duo, Repetier 0.92, OctoPi

4 Reply by awesomeness

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Re: Printing Speed Gut Check

carl_m1968 wrote:

If you want speed you would need a Delta design. They print at near twice to three times the speed of an A type machine like the Da Vinci.

Why does a delta print faster?  Shouldn't it take the same amount of time to extrude the same amount of filament, if the build path is the same?

5 Reply by carl_m1968 (edited by carl_m1968 2015-01-20 03:44:04)

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Re: Printing Speed Gut Check

awesomeness wrote:
carl_m1968 wrote:

If you want speed you would need a Delta design. They print at near twice to three times the speed of an A type machine like the Da Vinci.

Why does a delta print faster?  Shouldn't it take the same amount of time to extrude the same amount of filament, if the build path is the same?

The delta is capable of moving the head at two to three times the max speed a Type A like a Da Vinci can and still lay down a reliable accurate layer. The Delta printer uses a Bowden type setup but does not have bearings so the head can be shrunk to a size large enough to accommodate the hot end and supply connection points for the control rods that move the head instead of rails. Even the control rods are made of carbon fiber to reduce weight.

Right now on our Da Vinci at least on mine the max speed I have been able to print at and still maintain satisfactory accuracy is between 40 and 60 mm/s depending on the size and complexity of the model at a .2 layer. This would be reduced at .1. It also does non-print moves at about 150 mm/s.

A Delta also known as a Kossel or Rostock can make non-print moves at as high as 550 mm/s and print perimeters at 170mm/s and infill at 190 mm/s with proper tuning these numbers could be even higher and still maintain superior accuracy. Deltas can also go down to 50 microns on layer height. If I am not mistaken that would .05 layer height in our Da Vinci world. I am about to buy a kit on eBay for 422 bucks and that includes an E3D hot end clone. Once built all I have to supply is filament. It can do PLA or ABS.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.