Jgude
Posts: 1
Joined: Sat Dec 17, 2016 10:41 am

Z hop/ retraction vertical lift at beginning of print

Wed Jan 11, 2017 3:05 pm

Hi Guys,

I have a problem with the retraction vertical lift. I would like to use this feature but what it does is a hop/vertical lift at the beginning (beginning of first layer) of the print resulting in a print mid air :S.

How can this happen and even better how can a resolve this?

Kind regards,

Johan

brian442
Posts: 1243
Joined: Mon Nov 28, 2016 5:35 am

Re: Z hop/ retraction vertical lift at beginning of print

Thu Jan 12, 2017 4:55 am

You should post a factory file and a screenshot of the move in the preview you are concerned with. That will make it easier to help!

Jasper
Posts: 14
Joined: Sat Jan 14, 2017 12:58 am

Re: Z hop/ retraction vertical lift at beginning of print

Sun Jan 15, 2017 2:16 am

He means cura is using it and after home all the nozzle goes up and primes it. He probably wants to know how to prime the nozzle in S3D

docmortal
Posts: 11
Joined: Fri Feb 03, 2017 12:10 am

Re: Z hop/ retraction vertical lift at beginning of print

Mon Feb 20, 2017 11:50 pm

I have the same problem and looking for a solution. Been making some nice prints and decided to enable "LIFT ON RETRACTION" I tried a .30 lift and what happens is on the very beginning of the first layer it will lift and not come back down... So first layer is in the air.

I had to disable this feature to get printing again.

brian442
Posts: 1243
Joined: Mon Nov 28, 2016 5:35 am

Re: Z hop/ retraction vertical lift at beginning of print

Tue Feb 21, 2017 7:14 am

Again, you need to post a factory file and some screenshots if you want help.

User avatar
dkightley
Posts: 2060
Joined: Tue Mar 10, 2015 4:09 pm

Re: Z hop/ retraction vertical lift at beginning of print

Tue Feb 21, 2017 9:16 am

Having read the reported issue, I'm hazarding a guess that the generic "it" is the printer as opposed to the slicer software,

That being the case, I'm surmising that with a large vertical movement, the vertical drive system on the printer may be having problems moving the required distance at the set speed....and the vertical registration is being lost, resulting in the resultant z position being too high.

If so, I would slow the z movement speed (Other tab in FFF settings) down to see if the resolution skipping goes away.
Doug Kightley
Volunteer at the National Tramway Museum http://www.tramway.co.uk
Railway modeller and webmaster at http://www.talkingtgauge.net

docmortal
Posts: 11
Joined: Fri Feb 03, 2017 12:10 am

Re: Z hop/ retraction vertical lift at beginning of print

Wed Feb 22, 2017 5:59 pm

Thankyou for the suggestion !

I will try to lower z axis speed... I believe its set fast..

Whats funny is in the preview when i select layer ... The extruder tip is in the air to whatever mm setting i put in verticle lift..

When i preview in line i think its called the extrider tip in preview stays on the correct position...

Do you want me to post every single setting? Per page from the factory file?

brian442
Posts: 1243
Joined: Mon Nov 28, 2016 5:35 am

Re: Z hop/ retraction vertical lift at beginning of print

Thu Feb 23, 2017 5:39 am

Just go to File > Save Factory File, and then attach the .factory file here.

It may also help if you include a screenshot of the preview showing the exact area where you are having trouble.

docmortal
Posts: 11
Joined: Fri Feb 03, 2017 12:10 am

Re: Z hop/ retraction vertical lift at beginning of print

Thu Feb 23, 2017 6:25 pm

I will do that once i get home from work.

So far I have even tried different firmware stock settings to see if there is any difference and the same thing. Preview in layer mode z goes up and doesnt come back down which reflects when i start a print with zlift on retraction enabled and it goes up to whatever mm I set but stays up.

Luckily i can still print nicely just have to disable zlift on retraction.

I slowed down z to like 5.0 from 16.7 and same issue.

docmortal
Posts: 11
Joined: Fri Feb 03, 2017 12:10 am

Re: Z hop/ retraction vertical lift at beginning of print

Fri Feb 24, 2017 2:56 am

hope this will help troubleshoot. I also posted a pic of the extruder nozzle 5mm in the air during the whole print.
Attachments
NAME.stl
Factory File
(60.31 KiB) Downloaded 200 times
Last edited by docmortal on Fri Feb 24, 2017 3:03 am, edited 1 time in total.

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