jumping layers after pause

Guys yesterday i ve notice a problem that runs in one of my mendels. Today i spot exactly the cause . I was thinking that there was something wrong and after pause sometimes it was getting the nozzle higher than it should be.

Today i notice that it is just jumping layers. Any ideas what to look ?

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Delta Printer
Duet 0.8.5 firmware 1.19

Which firmware are you running?

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

i was running the 10-4 but it happened with an earlier version . the strange thing is both of the mendels running same firmware but it happens only to the one of them. today i got a look at resume and pause commands and didn't find anything there ( just did a comparison between the files from the two sd cards.) .

I suspect that there is something wrong with the slic3r settings.

From yesterday i uploaded the last beta of urs to the one and today on the second. I am printing now and thank God i didn't had anything wrong until now to pause the printing . but i keep that in mind so on the next pause to look better and closer the printer.

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Delta Printer
Duet 0.8.5 firmware 1.19

Perhaps you have your maximum Z speed configured too high? When you resume a print, I think it uses the configured maximum Z speed when lowering the nozzle.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Now that you 've mention it i think that in those printings i had the fails i might have the hotend moved higher than the maximun z....! i am not sure but because i need to see the nozzle to insert a drill for unclog it i do it ( getting the tip high) so it maybe the cause.

Thanks for the tip David.

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Delta Printer
Duet 0.8.5 firmware 1.19

I noticed a similar issue with the 1.10 release. I accidentally hit the pause button on my PanelDue during a print.

Upon resuming the print, it started printing the next layer without completing the layer it was on. I let it go and it finished "okay" as the perimeter had already printed and the rest was infil. Slicer was Simplify3D if that lends any insight.

it happened again yesterday .it was a pause on layer two and it resumed the print from the 4rth. weird ....!

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Delta Printer
Duet 0.8.5 firmware 1.19

I've made a note to review the code in this area and do some tests.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].