Calculated Printing Time

[dsp 18]

When we sent a Print from Cura to the S5  it always lies about 5% of the estimated time. 

so IE if it says 3 hours it will take 3 hours and 10 minutes, but lately it keeps on taking extra time even when looking in the browser it states i.e. finishes at 16:00

But if you look an hour later it will stat 16:30 and so on.

 

we started a print to day around 8:30 it would take 7h and 22 minutes

so it should finish around 16:00 

 

But the time it finishes already run up to 17:00.

 

In this way planning your prints is a pain in the @ss

 

Do more people see this problem and perhaps has a solution for this?

PS in the time i typed this it finishes already 4 minutes later. 

[Smithy 1,146]

I have no solution but have seen similar issues. I printed several small parts at once and Cura estimated a print time of 3 hours. Actually, it tool more than 8 hours 🙂 So I guess it also depends on the object itself, some print jobs are more accurate than others. Normally when I print a single model, the estimation is ok more or less, but if it is off for a few minutes I would not notice it.

[DivingDuck 105]

I see these differences for my prints too. My latest print logs showing differences between 4% and 47% depending on complexity, size and count of parts for a a print job. Smaller parts tends to have huger variations than bigger ones. On an average the differences are around 25%, whatever this mean. In the end I add approximately 35% for non small items and parts with more than 20% infill as estimate and feel happy if I'm below this estimate 🙂.

[yellowshark 153]

When estimating a job price, where print time is the fundamental cost, we add 8% to the Cura stated time (this is using vs 2.7). When we print we use Repetier Host which is more accurate and we use its timing to manage the print.

[dsp 18]

I know it is just an estimate and when it differs like 5% or so oke but now we were making a print that should take (according to cura)

7h 22 min but it actually took 9h 16 min. And this was 1 single model nothing special

 

We see these differences only lately so i was wondering is there something i can do about that?

is it time for maintenance or do i need to go back to cura 3.4?

[nallath 1,124]

It greatly depends for what 3D printer you are slicing. A lot of contributed machines have incorrect acceleration settings, which lead to incorrect estimations. The parameters should be pretty correct for Ultimaker machines, but will be widely off for a number of other machines. 

[dsp 18]

Nallath thanks for the reply but we are using an S5 so it should be correct right?

 

[dsp 18]

solved the issue the problem was in the Jerk time it was changed when setting it back to original the time is within the 5% difference

[CTotten 18]

I have both a UM3E and a UMS5.  Yesterday, I started identical print jobs on both with an estimated time of about 25 hours.  I started the 3E first, and after they ran for a couple of hours, the time remaining on both machines was within about 30 minutes of each other (S5 scheduled to finish later).  This morning when I got to work, the S5 time remaining was about 2 hours later than the 3E.  I am using Cura 4.1 for both machines, the same material for both, and the default settings (minus tuning the S5 print bed temp to match the 3E default - ironically the default bed temp for CPE appears to be 75C for the S5, but only 70C for the 3E).

 

In terms of scheduling to maximize up-time, and cost estimations, the "growing" time on the S5 is a bit annoying.

[BramS5 0]

We are experiencing the same with our S5. Calculated printing time in Cura (4.2.1) was under 12 hours. Started the print yesterday before going home, came back this morning expecting it to be finished. After 16 hours it sill needs 4 hours and 45 minutes printing time... 

[CTotten 18]

Just wanted to provide an update on this for a really large print that I am doing.

 

Cura 4.1 calculated print time for the job was 207 hours.  As of right now, I am 218 hours into the print, and the S5 still says 2 days remaining.  When I started the print, the S5 display showed the print time to around the same as the Cura estimate (I didn't write it down, but it was a few hours short of 9 days).

 

During the print, the job has had a couple of short pauses for material changes, and for a couple of feed issues with the PVA support material.  But in total, pauses have accounted for about 1 hour of time total.

 

I understand that Cura is providing an "estimate", but it seems to be consistently under-estimating the print time for the S5 (my 3E jobs print at pretty close to the estimated time).  Since the S5 is being marketed as a business machine, uptime is a significant factor, as well as costing estimates.  My experience thus far is showing about a 20% under estimation on print times, which is significant.