---
title: "Filament Welder — $271K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/industrial-scientific/filament-welder"
last_updated: "2026-08-08T08:50:29.232Z"
locale: en
meta:
description: "Niche score 45/100 · $271K/yr market · 297K searches/yr · $34.02 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:description": "Niche score 45/100 · $271K/yr market · 297K searches/yr · $34.02 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:title": "Filament Welder — $271K/yr Amazon US Niche (2026) - Flapen"
---
# **filament welder**
**Skip it**
Brand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Market size 49Growth 27Conversion 34Competition 18Returns 54Price range 82Avg price 95Brand share 6Review moat 71Quality gap 90
**Avg price**
**Incredible****$34.02**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.1★**
avg incumbent rating — lower means beatable quality
**Price range**
**Great****$9.29–$45.21**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****652.64**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.9%**
return rate — above 5% kills the launch gate
**Market size**
**Okay****$271K**
$271K/yr · 297K searches
**Conversion**
**Okay****2.7%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Okay****+1.5%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****98%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, filament welder is a $271K/yr Amazon United States market (297K searches/yr). The top 5 brands hold 98% of demand. Demand peaks in Jan. Verdict: Skip it — 45/100.
Data updated Aug 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **filament welder market data**
- **Units sold / yr**
- **10K–13K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$340K–$425K**
- units × avg price
- **Conversion rate**
- **2.7%**
- **Avg BSR**
- **#521**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **26 months**
- **Avg seller age**
- **193 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **—flat
**Sellers**
**10**
**Top-5 brand share**
**98%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**0%**
- SUNLU40% - YOOPAI35% - VIT SPORT12% - ROLWAY5% - IdeaFormer IR35% - kunphy2% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +1.5% search growth over the last 90 days.
10K6KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/industrial-scientific/filament-welder/trend)
## **Top filament welder search terms**
- **filament connector**84K/yr-16.7%3.0% conv. - **filament splicer**65K/yr+8.2%3.7% conv. - **sunlu filament connector**59K/yr-14.7%4.1% conv. - **filament joiner**23K/yr+101.5%2.0% conv. - **sunlu filament splicer**13K/yr+195.5%1.6% conv. - **filament welder**18K/yr-2.6%3.4% conv. - **filament fuser**9K/yr-8.1%4.8% conv. - **3d filament splicer**7K/yr-20.9%6.2% conv. - **filament splicer 1.75mm**5K/yr-40.2%8.2% conv. - **filament melter**3K/yr-5.8%0.7% conv. [**All search terms **](https://flapen.com/research/us/industrial-scientific/filament-welder/search-terms)
## **Top filament welder products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$27K20%$54K30%$81K40%$109K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**SUNLU Official Filament Connector Fast Heating Filament Splicer for 3D Printer Filament 1.75mm Up to 240C Compatible with PLA PETG TPU ABS PA Nylon Easy to Use Pack with 200PCS PTFE Sleeve**SUNLU**$37.38**4.1★1,518 rev](https://www.amazon.com/dp/B0D9GD8KPW) [2**SUNLU Filament Connector Filament Splicer with 200Pcs PTFE Sleeve for 3D Printer Filament 1.75mm Fast Heating Up to 240C Compatible with PLA PETG TPU ABS PA Nylon**YOOPAI**$39.74**4.1★1,210 rev](https://www.amazon.com/dp/B0DLBJB9MD) [3**VIT SPORT 1.75mm & 2.85 Filament Connector | Easy Operate Filament Welder Splicer for 3D Printer | Filament Fuser Joiner for PLA/ABS/PC/PETG/TPU Filaments**VIT SPORT**$28.65**4.0★854 rev](https://www.amazon.com/dp/B091Y9WSH6) [4**Filament Connector SUNLU Official Splicer with 200Pcs PTFE Sleeves for 3D Printer Filament 1.75mm Compatible with PLA PETG TPU ABS PA Nylon**YOOPAI**$40.22**3.9★168 rev](https://www.amazon.com/dp/B0DLBLY6K2) [5**SUNLU Filament Connector Filament Splicer with 400Pcs PTFE Sleeve for 3D Printer Filament 1.75mm Fast Heating Up to 240C Compatible with PLA PETG TPU ABS PA Nylon**YOOPAI**$44.65**4.1★1,210 rev](https://www.amazon.com/dp/B0FGX8QFDC)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SUNLU Filament Connector Filament Splicer with 400Pcs PTFE Sleeve for 3D Printer Filament 1.75mm Fast Heating Up to 240C Compatible with PLA PETG TPU ABS PA Nylon**YOOPAI**$44.65**1,210 rev1y ago](https://www.amazon.com/dp/B0FGX8QFDC) [**Filament Connector SUNLU Official Splicer with 400Pcs PTFE Sleeves for 3D Printer Filament 1.75mm Compatible with PLA PETG TPU ABS PA Nylon**YOOPAI**$45.21**50 rev1y ago](https://www.amazon.com/dp/B0FGX8H37K) [**VIT SPORT Filament Connector - 1.75mm & 2.85mm Ultimate Splicer for 3D Printer Up to 240 Filament Fuser & Joiner Compatible with PLA ABS TPU PETG PA/PC Material**VIT SPORT**$29.87**146 rev1y ago](https://www.amazon.com/dp/B0DTDWKW7Z) [**KUNPHY PTFE 600Pcs Suitable for SUNLU Filament Connector 3D Printer Filament 1.75mm Easy to Use High Temperature Resistance up to 240 Filament Welder Compatible with PLA PETG and ABS**kunphy**$17.78**135 rev1y ago](https://www.amazon.com/dp/B0DPW2QH3G) [**SUNLU Official Filament Connector 400Pcs PTFE Sleeve Filament Splicer for 3D Printer Filament 1.75mm Fast Heating Filament Welder Compatible with PLA PETG TPU ABS PA Nylon Easy to Use**SUNLU**$43.35**1,518 rev1y ago](https://www.amazon.com/dp/B0DNQJV1D2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SUNLU Filament Connector Filament Joiner Includes 200 PTFE Sleeves**ROLWAY**$38.15**4.2★**▲ 185%**](https://www.amazon.com/dp/B0DHKXB4P9) [**SUNLU Filament Connector Filament Splicer with 400Pcs PTFE Sleeve for 3D Printer Filament 1.75mm Fast Heating Up to 240C Compatible with PLA PETG TPU ABS PA Nylon**YOOPAI**$44.65**4.1★**▲ 46%**](https://www.amazon.com/dp/B0FGX8QFDC) [**VIT SPORT 1.75mm & 2.85 Filament Connector | Easy Operate Filament Welder Splicer for 3D Printer | Filament Fuser Joiner for PLA/ABS/PC/PETG/TPU Filaments**VIT SPORT**$28.65**4.0★**▲ 34%**](https://www.amazon.com/dp/B091Y9WSH6) [**IdeaFormer 3D Printer Filament Welder & Joiner Connects Broken Filament Sensor for Most 1.75mm Filament Accessory (Black)**IdeaFormer IR3**$9.29**3.6★**▲ 26%**](https://www.amazon.com/dp/B0BX344CPQ) [**SUNLU Official Filament Connector Fast Heating Filament Splicer for 3D Printer Filament 1.75mm Up to 240C Compatible with PLA PETG TPU ABS PA Nylon Easy to Use Pack with 200PCS PTFE Sleeve**SUNLU**$37.38**4.1★**— 9%**](https://www.amazon.com/dp/B0D9GD8KPW)
**~~View all trending →~~**
## **What buyers say about filament welder**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**21%
*“Easy to use”*
**Efficiency**13%
*“it is doing quite well for my use”*
**Advertised Vs Actual Product**9%
*“Works as intended, love it”*
**Value For Money**8%
*“Works GREAT and the price is very affordable”*
**Quality-Overall**8%
*“I've used it on PLA, PLA+, and PLA+ 2.0 matt, silk, marble and standard types and it does excellent, so I'm fairly confident that it will be compatible with most others as well”*
**Heating**4%
*“It melts/blends the two ends real fast and is strong”*
**Functionality-Overall**4%
*“Machine works great takes patience though”*
**Instructions/User Manual/Troubleshooting**3%
*“Easy to follow instructions”*
**Color**3%
*“You can either hook the last little bit together or you can make some cools color changes”*
**Size-Overall**2%
*“It fits”*
### **What buyers complain about **
**Functionality-Overall**22%
*“Doesnt work”*
**Ease Of Use**17%
*“Difficult to use”*
**Quality-Overall**11%
*“Not as good as I thought it would be”*
**Heating**6%
*“it gets really hot within a few minutes I think something inside it melted”*
**Value For Money**4%
*“At this price point I expected a more intuitive experience”*
**Connectivity-Overall**4%
*“the connections it makes are bad”*
**Strength**3%
*“Brittle connections”*
**Size-Overall**3%
*“its smaller than I thought it would be”*
**Print Quality**3%
*“My print got hung up right at the first splice it came to and failed”*
**Durability**2%
*“it will break off within the extruder”*
### **Top return reasons **
**Functionality-Overall**34%
**Socket/Port/Plug**10%
**Advertised Vs Actual Product**10%
**Heating**8%
**Defective Material/Parts**8%
**Connectivity-Overall**6%
**Touch/Button Controls**3%
**Compatibility-Overall**3%
**Ease Of Use**3%
**Value For Money**3%
## **Common questions**
- **Is filament welder profitable to sell on Amazon United States?**
- The niche generates $271K/yr across 11 tracked products. 90-day search growth is +1.5%. Flapen's verdict: Skip it (45/100).
- **How competitive is the filament welder niche?**
- 6 brands and 10 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 98% of demand.
- **What do buyers complain about in filament welder?**
- Top complaints mined from reviews: Functionality-Overall, Ease Of Use, Quality-Overall. The return rate is 2.9%.
- **When does demand for filament welder peak?**
- Demand peaks in Jan; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the filament welder niche?**
- Listings span $9.29–$45.21; the average listing price is $34.02 (sweet spot $15–$100). The average incumbent carries 653 reviews — the moat a new listing must climb.
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