S1 Pro

FLSUN

S1 Pro

30 positive 0 neutral 26 negative

Based on 56 Reddit mentions

$1099.00

Buy on Amazon

We may earn a small commission.

Most discussed features

Sentiment summary across the product areas Reddit users mention most.

Reddit mentions

Original Reddit posts and comments behind this analysis.

Filtered by featureprint qualityClear feature

Can’t figure this out

Check the sliced previews. More specifically the layer time, flow, and speed previews. If your layer time preview has the same pattern, try changing your infill type to rectilinear. Check the preview again. If it looks even, or better than it was, try printing it to see if the banding goes away. Sou

...

Qjeezy in r/QIDI

October 8, 2025 5:45 PM

6

FLSUN S1 - FREE

I have an S1 pro and I'm feeling the same. Not quite giving it away yet, but I'm on effector #3 and it worked all of 1 second before getting a clog that required full disassembly. FLSUN support hasn't responded to my email (it's been weeks). Printer has been down probably 8.5 of the ten months I've

...

Srcc in r/FLSUNDelta

November 10, 2025 5:03 PM

3

"Wooden" Vase

The biggest issue I had with the S1 even after the motor upgrades is the persistant salmon skin that would materalize on the outer wall of every print when you print at slower speeds, especially vase mode. After a year of troubleshooting with FLSUN including firmware updates of motors with a spcial

...

Dudditz77 in r/FLSUNDelta

May 28, 2025 8:18 PM

2

Give me your opinions on the FLSun S1

DO NOT BUY THE DAMN S1. THE PRINTER SUCKS, THE COMPANY SCAMS YOU AND ITS A WASTE OF MONEY. I bought my first FLSUN back in December and it was the t1. It broke a couple months in. The replacement t1 pro broke in a month and the so called upgrade the s1 pro has been defective since arrival. I’m buyin

...

OwnBat7882 in r/Flsun_official

November 26, 2025 12:17 AM

1

Advice on these listed printers

Bambu are excellent printers, but every printer has its issues. The ecosystem from Bambu is so closed down which personally drove me away. The ability for you to go on MakerWorld and grab the 3MF file and send it to your printer without any guesswork is very nice, which is probably why it’s such a g

...

MurkyCup1554 in r/3dprinter

January 8, 2026 5:44 PM

1

Extreme stringing with PETG on FLSUN S1 Pro. Any tips besides a heat gun?

Thank you for the tip. I've kept it dry, and even dried it before prining. Unlike PLA, which degrades due to moisture, PETG can be restored by drying. I used the same filament to print the wheel on a different printer (at 10:35 in the video), and there was much much less stringing - barely any. My t

...

vgergo in r/FLSUNDelta

March 29, 2026 4:44 PM

1

Top alternatives in FDM 3D Printers

#1