FLSUN S1: What You Need to Know, an In-Depth Review

You and Angus are the only guys I trust for reviews. Another banger, as the kids like to say.

Brutally honest! I bought a Bambu X1C based on your review and have been really happy with it. My printer is a tool. I don’t want to have to mess with it to get good results. The X1C does that out of the box.

You are the gold standard for 3D printer reviews.

For me the biggest red flag is the deception of flow rate. A company has to respect its customers.

I love delta printers, I made my own large format delta. 500mm bed, 1.5m tall. You think this thing is big, mine looks like a phone booth (I built an enclosure for it). Deltas can have a something that looks like VFAs, but they're not, they're delta artifacting, which is why those who know what they're doing, use 400 step motors and small pulleys. My delta uses awd (6 motors -- top and bottom) nema 17 400 step motors and 16t pulleys. The high step count eliminates the artificating, and you get parts that are actually as designed, however you can't get the 1m per sec moves to put on the box if you do that, I can push 600-800, because I use a 40v PSU (did the math -- and that is recommended max for my stepper combo). I can push accelerations, but to some degree it's a parlor trick. FL sun reps saw my delta on 3d printer builder groups and tried to get me to try theirs and make a video about it, why? Looks like they're after the specs not quality. Also knowing the math behind deltas, the delta print volume is a cylinder with a cone on top, to advertise max height as the tip top of the cone is SUPER deceptive, true build volume of a delta is the cylinder, you never factor that cone into it because trig computation there gets super sketchy. FL sun DO BETTER. I have the CPAP blower on my delta too, but mine is actually implemented with a true analog converter board, so you can dial in the amount of cooling you need and it actually isn't super loud when you do it right.

Seems like a cool printer, I really hope they watch your video and make modifications to improve their product. You'll find out if they're a good company or not based on how they respond to criticism. If they can't take criticism they'll never improve

11:23 That test file makes me think of the Volkswagon diesel engine EPA debacle.

STOP making copies of a slicer that you just make worse compared to the open source, all for the sake of making it closed source. Especially if your version is buggy or not polished. Cmon now, no one like scuzzlords. Thanks for the review and all the effort of testing, was interesting to see.

Fantastic deep dive review! Nice to see someone digging in on accuracy of parts off this machine

The quality and depth of your testing and analysis is outstanding. FLSun should be paying you for that! 👍😎

in this era of stimulating short videos, I find your video/voice soothing and make me slow down a bit to re-enjoy a real, in-depth review, it almost remind me of the vibe of the good old days when MK3 just came out and the community is full of helpful people and everyone is trying their best to make this technology better

I wonder if the engineers need external feedback to make the bosses listen.

Great review! I like how thoroughly you test, how honest you are with full disclosure, and how you tell the facts as you discovered them. You are very fair to the manufacturer, listing the deficiencies you found, but with helpful suggestions about how they could be remedidated.

As usual I’m impressed by the depth of comprehension you bring to the project. 👍

Appreciate the honest review. Refreshing to be honest.

Every reviewer was dissapointed with that machine. Yours was the most gently worded out of the bunch. Botfarm comments show that they're really trying to capitalize on their investment, not really by improving their hardware/software. Classic corporate move.

Great review. I would not be happy at all if I dropped $1500 and wound up with all of these shortcomings.

As always, love your content and your upfront honesty.

What an excellent independent review. Saves everyone time and money and enjoyable to watch.

Great review. I had no unanswered questions at the end.