Kingroon KP3S Pro V2 vs Longer Orange 4K
Head-to-head 3D printer comparison, 2026
Comparing FDM to resin? The Kingroon KP3S Pro V2 ($159, FDM) and Longer Orange 4K ($129, RESIN) use fundamentally different technologies. FDM melts filament layer by layer; resin cures liquid with UV light. Here's how they stack up.
Our Verdict
The Kingroon KP3S Pro V2 takes the crown with 7.2/10 vs 6.4/10. It pulls ahead in Beginner Friendliness, Speed, Reliability. That said, the Longer Orange 4K saves you $30.
Score Breakdown
Specifications
| Spec | Kingroon KP3S Pro V2 | Longer Orange 4K |
|---|---|---|
| Price | $159 | $129 |
| Type | FDM | RESIN |
| Build Volume | 200 x 200 x 200 mm | 118 x 66 x 190 mm |
| Print Speed | 250 mm/s | 80 mm/s |
| Min Resolution | 0.05 mm | 0.01 mm |
| Weight | 6.5 kg | 4.5 kg |
| Overall Score | 7.2/10 | 6.4/10 |
Pros & Cons
Kingroon KP3S Pro V2
+Linear rails at $159 is genuinely unusual: this feature normally costs $300+
+Direct drive handles TPU without the feeding nightmares of a Bowden setup
+Compact footprint fits on a shelf without dedicating a full desk to it
−200mm cube limits what you can print in one go
−Kingroon's community is small: if something breaks, you're mostly solving it alone
−Firmware is functional but hasn't had meaningful updates in a while
Longer Orange 4K
+$129 is the absolute floor for resin printing
+WiFi at this price is genuinely surprising
+4K resolution is enough to see if resin is your thing
−118x66mm build plate: one mini at a time, if they're small
−4K resolution is dated next to 9K and 12K competitors
−Long-term reliability is unknown; smaller community means fewer fixes documented online
Who Should Buy Which?
Choose the Kingroon KP3S Pro V2 if you want:
- A great printer for budget
- A great printer for compact
- Linear rails
- Direct drive
- Auto bed leveling
Choose the Longer Orange 4K if you want:
- A great printer for budget
- A great printer for resin
- 5.5" 4K mono LCD
- WiFi
- USB
Frequently Asked Questions
Is the Kingroon KP3S Pro V2 better than the Longer Orange 4K?
By the numbers, the Kingroon KP3S Pro V2 scores higher (7.2/10). But "better" depends on your use case, the Longer Orange 4K may be the smarter buy if you need budget.
Which is better for beginners, Kingroon KP3S Pro V2 or Longer Orange 4K?
The Kingroon KP3S Pro V2 is more beginner-friendly (7/10 vs 5/10) with easier setup and a gentler learning curve.
Is the Kingroon KP3S Pro V2 worth $30 more than the Longer Orange 4K?
The Kingroon KP3S Pro V2 scores higher overall (7.2/10 vs 6.4/10). The extra $30 gets you linear rails at $159 is genuinely unusual: this feature normally costs $300+.
What's the main difference between Kingroon KP3S Pro V2 and Longer Orange 4K?
Technology: the Kingroon KP3S Pro V2 is FDM (filament) and the Longer Orange 4K is RESIN (resin). FDM prints bigger functional parts; resin delivers finer surface detail.