mordaga
Posts: 4
Joined: Sun Apr 23, 2017 10:03 pm

Elephant Foot Compensation

Wed Jun 17, 2020 7:00 pm

Can we please get a feature to compensate for "Elephant Foot", similar to PrusaSlicer:
https://help.prusa3d.com/ja/article/ele ... ion_114494
Image

Thank you!

airscapes
Posts: 326
Joined: Tue Mar 06, 2018 10:35 am
Location: Philadelphia PA Area

Re: Elephant Foot Compensation

Thu Jun 18, 2020 8:31 am

you can do that with the Z offset.. same thing .. Elephant foot is caused by an incorrect setting of the Z offset (distance between the nozzle and bed during the first layer. The nozzle is too close to the bed for the layer height chosen.

tonyno
Posts: 171
Joined: Sat Jan 31, 2015 5:46 pm

Re: Elephant Foot Compensation

Thu Jun 18, 2020 8:35 am

Not sure how people don't find any of the older posts that address this.

viewtopic.php?f=23&t=5042#p27552

User avatar
dkightley
Posts: 2226
Joined: Tue Mar 10, 2015 4:09 pm

Re: Elephant Foot Compensation

Thu Jun 18, 2020 3:30 pm

Not sure how people don't find any of the older posts that address this.
I know how! Two reasons

1) The threads are not on page 1 of the thread list
2) They didn't search for them.
Doug Kightley
Volunteer at the National Tramway Museum http://www.tramway.co.uk
Railway modeller and webmaster at http://www.talkingtgauge.net

mordaga
Posts: 4
Joined: Sun Apr 23, 2017 10:03 pm

Re: Elephant Foot Compensation

Thu Jun 18, 2020 3:44 pm

@tonyno -
I did indeed search and find the thread you posted.

However, as was mentioned in the thread, creating an extra process is a lot of effort if you have multiple printers and/or many different profiles already.

It would be a great quailty-of-life feature to have a setting on a process that can control the first layer (or X layers) separately.

airscapes
Posts: 326
Joined: Tue Mar 06, 2018 10:35 am
Location: Philadelphia PA Area

Re: Elephant Foot Compensation

Thu Jun 18, 2020 4:15 pm

Why do you have elephant foot to begin with? Answer, you did not set your printer up for the correct Z offset for current layer height being printed. Why, maybe the manufacture does not tell you how or the printer is not accurate enough to maintain an accurate Z offset across the bed, so over compression of the first layer is need.. Maybe you just need to be obsessive to take the time to set it up.. not sure.. but I see so many people having issues with adhesion and the first layer on other forums and it all comes down to this one critical setting that is apparently ignored by manufactures and most users.

Short of setting the offset in the firmware you can always use the Z offset in S3d as was suggested earlier..this thread helps explain it viewtopic.php?t=2210

Since I mentioned the Firmware here is the marlin man page for M206
https://marlinfw.org/docs/gcode/M206.html

mordaga
Posts: 4
Joined: Sun Apr 23, 2017 10:03 pm

Re: Elephant Foot Compensation

Thu Jun 18, 2020 6:20 pm

@airscapes -

My older Replicator2 does not have a heated bed.
Even with an aftermarket BuildTak surface applied, it can be challenging to get my first layer to adhere and not curl up on some prints.
So, I need some extra squish in the first layer for good adhesion, which results in elephant foot.
Last edited by mordaga on Thu Jun 18, 2020 8:02 pm, edited 1 time in total.

airscapes
Posts: 326
Joined: Tue Mar 06, 2018 10:35 am
Location: Philadelphia PA Area

Re: Elephant Foot Compensation

Thu Jun 18, 2020 7:10 pm

The feature you wish is there.. Z offset. It will crush the first layer and put the second one on top without squishing it..

parallyze
Posts: 88
Joined: Fri Jun 05, 2015 4:18 am

Re: Elephant Foot Compensation

Fri Jun 19, 2020 10:44 am

Not using Prusa Slicer very often. But I think that feature is not like Z offset, it's more like "Horizontal Size Compensation" (Process -> Other -> Dimensional Adjustments) affecting the first layer only... some kind of counter measure to the fact many people jam the first layer in the bed quite badly.

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