Elegoo
Saturn 4 Ultra
Based on 139 Reddit mentions
$426.99
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Reddit mentions
Original Reddit posts and comments behind this analysis.
Elegoo Saturn 4 Ultra 16k - Water Washable
I'll just assume it bots or something, but for whatever reason, this thread is just filled with wrong answers. Well, technically the Wait time before print suggestion is correct, but is still useless because it fails to provide any guidelines for settings or why it works. Rest / Wait time is why you
...DarrenRoskow in r/ElegooSaturn
March 25, 2026 4:57 AM
9
Saturn 4 Ultra 16K, over a year of troubleshooting and I still can't fix it.
The S4U springloaded plate means that wait times are even more mandatory than regular printers. The light turns on way before the resin has settled and the springs have found home. This means you get a layer thicker than supposed especially at 20um, your bottom layers are probably closer to 0.5 or e
...KalleKantola in r/ElegooSaturn
July 8, 2025 8:02 PM
17
Photon P1 vs Saturn 4 Ultra 16k
No build plate flatness issue with the Saturn 4 Ultra outside rare individual defects, but it will typically not achieve 100% perfect Z accuracy the first several layers. You will want to use a high amount of Rest After Retract (Chitubox) / Wait time before cure (UVTools) using UVTools for the first
...DarrenRoskow in r/resinprinting
April 12, 2026 7:19 PM
7
Chitubox 3.0 is a scam
I used to be a loyal Elegoo customer, but know that I will never buy from you again. I’m switching to Lychee right away. This has nothing to do with Elegoo... in fact Elegoo has been pissed at Chitu Systems for a long time now as well. Enough so that they developed the .goo file extension... and rel
...newocean in r/resinprinting
August 17, 2025 4:51 PM
12
Is this elephants foot? Help me diagnose
And add more rest before print. Best topic on it. https://www.reddit.com/r/ElegooSaturn/comments/1jwcwg2/fixing_saturn_4_ultra_elephant_foot_and/
coffee_copter in r/resinprinting
October 9, 2025 3:58 PM
11
Anti Aliasing Saturn 4 Ultra
I recently found this as well. It appears recent firmware to avoid the "lasagna bug" is either skipping layers or skipping the gray pixels when it can't load the image to the LCD fast enough. I have similar results with my own experiments in vertical smoothing / AA here: https://www.reddit.com/r/res
...DarrenRoskow in r/ElegooSaturn
August 12, 2025 2:02 AM
10
Magforms Elastic 600
Did it start to fail at the back and split moving forward like this? https://www.reddit.com/r/resinprinting/comments/1n8gh14/help_with_st_flex_black_70a_parts_of_print_stop/ If so it is partially because the resin stretches and the tilt stroke of the S4U is shorter at the back than the front. Fixes are roug
...DarrenRoskow in r/resinprinting
April 26, 2026 9:34 PM
5
Dead Spot on Screen
That will be a screen replacement. And, yeah it's getting too common with the S4U just past the 1 year mark. Here's my theory on the source of the problem - bad software configuration of the automatic leveling system and lack of a baked in Rest After Retract along with a couple methods to prevent th
...DarrenRoskow in r/ElegooSaturn
August 13, 2025 3:11 AM
8
6 months of failed prints troubleshooting Saturn 4 Ultra with Elegoo support
You need Rest After Retract (Chitubox) / Wait time before cure (UVTools name) using UVTools to increase it for the first 10-20 layers to 10-20s. On the lower UV power S4U 12k, I am running base layers around 12-15s exposure for all of 3 base layers and 3-5 transition. UVTools is required as none of
...DarrenRoskow in r/ElegooSaturn
August 28, 2025 11:54 PM
8
Been having some issues on a print with my saturn 4 ultra
Just going to copy-paste my comment from a couple weeks ago on the matter of S4U dead LCDs: For you next LCD, definitely look into use Rest After Retract (Chitubox) / Wait time before cure (UVTools name) via UVTools for the first 20 layers or so like the following settings: https://www.reddit.com/r/
...DarrenRoskow in r/ElegooSaturn
November 9, 2025 8:35 PM
7