Cura 2.1.1 - pretty low speeds

[Nicolinux 288]

I wonder why the speed settings for the e.g. Fast profile are so conservative. If let untouched I had an estimated printing time of 9 minutes. If I set my intended speed (40) for everything, the printing time is almost halved.

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[nallath 1,124]

Paul Chandler made these profiles. He probably has good reasons to do them like this.

It does make sense if you increase the speeds that the time to print goes down right

[Nicolinux 288]

Of course it does make sense, but I still wonder why the "fast" profile prints that slow in comparison to Cura 15.04.x

[Tomhe 21]

I see that the printing speed was set down manually to 40mm/s (in the first picture), that setting should be 60mm/s. It's visible because it has a 'restore' symbol next to it.

This means that you are not working with the standard profiles. Unchanged, the profiles are about as fast as the profiles in 15.04.x.

Edited May 25, 2016 by Guest

[Nicolinux 288]

 

@Tomhe: It doesn't matter because Cura automatically adjusts the speed for other other areas based on a fixed offset. Even with 60mm/s it would still print top/bottom with 26.7 for example and that's way slower than the older Cura.

[Tomhe 21]

26.7mm/s is slower than 30mm/s, that is true. But it was made in such a way that it scaled nicely for all materials and qualities, the 10% decrease in speed for just the top and bottom layers isn't 'way slower' in my opinion.

[neotko 1,417]

Why top/bottom speeds are linked? Or it only affects the last last top layer, or all the top layers? Because if it's all the top layers then it indeed will slow down a print.

Edited May 25, 2016 by Guest

[Nicolinux 288]

 

@Tomhe: I did misunderstand you. I meant that it is way slower than setting the same base speed for all areas (like I did in the second screenshot).

[neotko 1,417]

@Tomhe: I did misunderstand you. I meant that it is way slower than setting the same base speed for all areas (like I did in the second screenshot).

 

Indeed, but that slow down must be done to increase the print quality in expense of time. But 'fast' 40mm/s ? that's my average slow print. This machines can do a very nice 50mm/s for speed, and I mostly print at 70-60mm/s all the time. I suppose they want users with happy 'fast' prints, then they go learn how to tune stuff.

I would prefer a % quality slow down with an auto range of 10% as base and a warning to now change too much the % so the speed doesn't change too much. Anyhow in my experience it isn't too much about speed but material flow. When I print 0.50 and 0.31 on some texts I adjust the speed of one and the other so I keep the same material speed.

A system to calculate the mm3 of all the objects profiles so they keep the same volume... Now that would be awesome.

Sorry I went offtopic..

[Nicolinux 288]

 

@neotko: It surely depends on the model. Some things you can't print faster than 40mm/s without loss of quality. My average slow print is 30mm/s and 50mm/s the default speed. I rarely print faster than that because I prioritize quality over time.

[neotko 1,417]

@neotko: It surely depends on the model. Some things you can't print faster than 40mm/s without loss of quality. My average slow print is 30mm/s and 50mm/s the default speed. I rarely print faster than that because I prioritize quality over time.

 

Curious I print 50mm/s for normal and 60-70 for ok quality

The interesting point I think it's that everything depends on what you print, and that not everything can be printed the same way. I think the profiles think it's wrongly planed. Won't be easier to have 'kinds of objects' as quality?

For example. User choose a base. Then the program uses a profile with spiralice and recomends a big nozzle. Or user wants 'water tight' then it focus on extra flow and more perimeters. Or 'pcb enclosure' then it focus on high quality top layers with fast quality inside and good quality outside.

I think everyone can agree that there's no perfect profiles but there's always something in common with the kind of object you print. That could be a good starting point for users to learn from profiles while also users could learn that every object can't be printed the same way.

Edited May 29, 2016 by Guest

[nallath 1,124]

The difference is also that you guys know what kind of models can be printed (and probably have very well tuned machines). The "normal" user does not have this. We strive to go for reliability first and only then for speed.

[Nicolinux 288]

I guess nallath is right. Since we'll always fiddle with print settings, it is ok to not rely too much on "optimal" profiles. I use them as starting points sometimes.

It is just that I have so varied objects that I rarely print something with the very same settings.