S1 Pro

FLSUN

S1 Pro

30 positive 0 neutral 29 negative

Based on 59 Reddit mentions

$1499.00

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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

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Qjeezy in r/QIDI

October 8, 2025 5:45 PM

6

The FLSUN S1 promises speed but the print quality is poor. What should I do?

Install Viking3DK Orca profiles to get high print quality. https://www.printables.com/model/1426214-flsun-s1-s1pro-orca-profiles-v10/related

Groo2001 in r/Flsun_official

March 28, 2026 3:34 AM

2

S1 OR S1 PRO

AI to the rescue The FLSUN S1 and S1 Pro are both high-speed delta 3D printers, and they share many core features. However, the S1 Pro is an updated version that brings several key improvements and refinements. Think of it less as a complete overhaul and more as an "S1.5" with enhancements that impr

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Iostminds in r/Flsun_official

September 4, 2025 3:36 AM

3

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

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Srcc in r/FLSUNDelta

November 10, 2025 5:03 PM

3

Can't post it on r/3dprinting till monday, so I'm putting it here

All printers have their place. For mass production my Bambus are my go to but for prototyping my FLSun S1 pro is by far the better machine

Ancient_While8201 in r/BambuLab

August 1, 2025 10:32 AM

5

Don’t like my Qidi, sell me on an FLsun

My s1 i got before release from flsun still beats the flsun s1 pro I have and when set right and slowed down is super clean especially being open source as well. If it had interchangeable heads for multicolor and a circular camera ring to auto 3d scan it would kill with its built in lidar and full b

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Kdub943 in r/Flsun_official

July 18, 2026 7:45 AM

1

give me your honest reviews of FLSUN

I love my S1 Pro, though it took a week of dialing in and figuring out settings to make it print at a similar quality to my Bambu A1 Mini. But once that was figured out, it’s been great! Print quality is fantastic and it’s so fast, even with my setting tuned to favor print quality! One thing I’ve ex

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Artholos in r/Flsun_official

June 14, 2025 5:02 AM

3

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

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vgergo in r/FLSUNDelta

March 29, 2026 4:44 PM

1

"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

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Dudditz77 in r/FLSUNDelta

May 28, 2025 8:18 PM

2

Just bought an S1

I have a S1 Pro and it has been pretty solid. I would highly recommend getting "high speed" filaments. I have had good luck with Sunlu's HS PLA and Elegoo's Rapid PETG with just default profiles (using OrcaSlicer). I haven't used other filament types outside of that. Be prepared for how loud it is.

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DuhMayor in r/FLSUNDelta

September 4, 2025 11:00 PM

1

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