Printing speed

bluuu · 2015-02-27T10:21:41.000Z

it’s a good speed, if your printer is rigid you can incrase speed for test

Stanos · 2015-02-27T10:23:48.000Z

I have mine tuned in pretty darn well, the only thing I need to upgrade is adding acme rods to the z but they are difficult to find for a good price. I have been printing at anywhere between 75 to 90mm/s for the last couple of years, but I have recently taken it down to 50-60mm/s in order to increase quality now that I am selling a lot more of my own designs through Etsy and at work. If I am just doing a structural part of something that is not going to be seen I have no issue ramping it up to 120mm/s, but the corners will come out a bit over extruded and I will get really bad shadows around areas like text.

So ya, 50mm/s is a good speed to stick with unless you get the rest of your machine tuned in better.

Munson · 2015-02-27T11:11:54.000Z

I print between 40-60 using an E3DV6,the Hotend you use is most important,I can crank up the speeds much higher but my X axis motor feels scorching hot.

Luciano · 2015-02-27T12:30:55.000Z

Hi Salvador

My melvin print in 25 minutes because my print speeds are lower (30mm / s) for a better definition.
Also used the Cura for slicing, but in tests other slicers are short in printing time of issue

evan_lee · 2015-02-27T13:52:47.000Z

If you play with accel values you might be able to get some more speed if you run the hot end a little hotter (since you’ll be pumping plastic through there). Delta printers are very fast usually if you’re interested int he pursuit of speed.

jandj3d · 2015-02-27T14:03:25.000Z

Mine (Prusa i3, slic3r, infill_speed=60,perimeter_speed=30) takes about 42mins… No idea which of the Slic3r speed settings is worth quoting, there are so many! (havent resliced it with Cura yet, tho I have that set to similar numbers)

cdeschrun · 2015-02-27T14:11:49.000Z

Ways to speed up print time:

increase nozzle size (going from .35mm to .5mm will double the cross sectional area of the nozzle)
Play with Slic3r advanced settings for extrusion width
Variable layer height (Cura: Z tweak) (big layer height for straight walls, small layer for top rounded and sloped areas

Read the good book: http://manual.slic3r.org/

UltraResolution · 2015-02-27T16:00:14.000Z

That’s pretty standard and good speed. Mine is about the same, and for Prusa you can go as high as 60.

salvador · 2015-02-27T19:26:58.000Z

Thanks everyone for the quick replies! What I distill is that the speed is not that bad at all. I really like the accuracy of my printer not, so I think further tweaking will not help me. Somehow I think the speed should increase for the printers to become more useful for bigger items. Or do other (non-reprap) printers have a much higher speed?

salvador · 2015-02-27T19:30:58.000Z

I see, a delta printer. I have seen some videos of them but they did not seem that much faster. What delta printer are you referring to?

salvador · 2015-02-27T19:33:15.000Z

Thanks Luke! I used the calibration tips allready :-). I think I will stick to the current speed or move to another printer

Stanos · 2015-02-27T19:58:39.000Z

Printers like the makerbot are slower. If you want to go even faster you have to reduce resolution and go with bigger nozzles. The volcano from E3D is a good example. It can spit out low res super strong parts really fast but you wouldnt use it to print a figurine.

3dReems · 2015-02-27T20:27:52.000Z

I think that the speed can be increased if mendel changed. I suppose that the throubles starts for the inertial mass that move in alternative motion. If we introduce a calibrated spring we can delete the problem, and speed can be increased.

megaksa · 2015-02-27T21:29:57.000Z

Confirm. 50mm/s for Prusa i3 is good value. I have some issues with bearings at the moment. The max reasonable value I could achieve was 100mm, but the quality becomes worse. Reason is rigidity/inertia. Moved masses at Prusa are pretty big.

Deltas have way lesser moved mass and I could achieve ~150mm/s (I’m still trying to improve the mechanics) and reasonable is ~100mm (mostly because frame is made from acrylic glass (PMMA) and in current version is not rigid enough to withstand higher speeds (quality loss due to printing head inertia).

Overall speed currently sucks on all available printers. To improve the technology must move from single point printing (printing area 0.4mm x 0.4mm) to some kind of array (linear or other shape, for example 4mm linear array may imporve 10x), or to some other physical principles.

3dReems · 2015-02-28T09:46:07.000Z

hi guys

If you suppose that there are some vibration when I increase the speed, the first think that all the people think is: oh, the printer is bad, I should reduce the speed. But if you digg in the science and if you study all the problems around you can discover that you can remove all the problems. There are some frequencies that are called natural frequencies of materials. An example? See the resonance effect. For all the problems of resonance there are some rubber support that reduce the vibration. Another problem is the slides and the lubrification. Every material when is coupled has different surface contacts. And each one require the calibrated oil. And the error? Has anyone discovered what is the precision of all the position in our machine? This is the mechanical part of the problem that should be solved.

sherif · 2015-02-28T17:28:29.000Z

It highly depends on the nozzle size and plastic type

I’m using 3000 mm/min (50mm/s) maximum when printing PLA using a 0.4mm nozzle @ 210C, beyond that it jams

When using the 0.8mm nozzle I was able to go 4800mm/min (that’s 80mm/s) using PLA at the same temperature

I have a prusa i3 rework

MetalTree · 2015-03-03T12:11:45.000Z

I just ran my big delta at 1000mm/s (using a smoothie board) doing a marvin in PLA in under 10 min, quality was rough but it was a really good speed test, I’m now going to up the acceleration further, here’s a link to the vid

Cheers

Jason

KDan · 2015-03-03T13:51:25.000Z

As you try to print faster, a high static speed isn’t really the major factor on how fast a machine can print, it’s acceleration. Your actual speed is quite likely never being reached (especially on smaller parts) due to acceleration limits. Just want to clarify that.

Fast moving delta machines are wonderful, but the limiting factor is often how fast you can extrude the plastic, not how fast the machine can move. A commonly recognized print volume upper limit for most extruders is around 8 to10mm3/s. To figure out how fast you’re trying to extrude your plastic you simply multiply your nozzle diameter with the layer height and speed. So for example, if you’re printing with 0.2mm layers at 60mm/s you would do: 0.4*0.2*60 = 4.8mm 3/s. You might be able to exceed an 8-10mm3/s volume of you really crank up the heat on the extruder. If you don’t, you will encounter rapidly increasing extruder feeding pressure which will cause extruder skipping or filament stripping. However, the problem with higher extruder temperatures is that you risk decomposing the filament and jamming the nozzle tight as a drum when the extruder stops feeding filament.

When you see someone claim they can print at some outlandish speed - do the math. The current extruder technology has limits that can’t be violated.

cdeschrun · 2015-03-03T15:02:09.000Z

What about running a Volcano? Volcano HotEnd – E3D Online or http://e3d-online.com/blog/volcano\_release for video. Has anyone gone down this road?

Stanos · 2015-03-03T21:24:57.000Z

I havent myself but im seeing a lot of praise for it on the g+ communities. Only reason I havent got one though is because the majority of what I print needs high resolution and with the volcano you are sacrificing resolution for speed and strength.