标题: Textile Industry Specialist Brings Constant-Tension Yarn Feeding Technology to FDM Printing [打印本页] 作者: admin 时间: 2026-10-13 20:14 标题: Textile Industry Specialist Brings Constant-Tension Yarn Feeding Technology to FDM Printing Nanjixiong introduction
While consumer FDM companies compete on speed and colors, a newcomer from another industry is rethinking the fundamental task of feeding filament.
In October 2026, Nanjixiong learned that Yiwu Bosi Technology Co., Ltd. had introduced an active FDM material feeding system, claiming it could directly replace Bambu Lab AMS, Creality CFS and TPU feeding aids.
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The left vase was printed using Bosi's active feed system, while the right used the original pull-feed method. On the same printer with identical settings, the left sample shows better surface quality.
Founded in 2012 as Yiwu Bosi Electronics Factory, the company has spent more than a decade developing textile yarn feeders, building a specialized position in the domestic market. It also has dual-servo wire feeding experience in electronics. That expertise is now being transferred to printing filament.
From textile machines to printers: tension
The central technology is constant-tension control. In textiles, low tension causes wrinkles and excessive tension breaks yarn. Bosi electronically sets tension, measures it in a closed loop and activates feeding when the set value is reached, maintaining stability throughout production. The source describes successful feeding of extremely fine elastic thread, one-tenth of a hair's thickness and approximately 30A–40A in hardness.
Electronic wire feeding has a similar problem: excessive speed can cause breakage and insufficient speed creates accumulation. Dual-servo feeders maintain stable tension at high speeds.
FDM faces comparable conditions. Filament travels from spool to nozzle along a long path. Conventional systems rely on the extruder pulling it forward. Filament stretches under tension and rebounds when released. Higher printing speeds create greater fluctuations; spool sizes change resistance; soft TPU can be difficult to pull.
Uneven tension contributes to poor surfaces, limits speed and complicates flexible materials. Bosi uses active feeding, closed-loop control and constant tension, the same principles as its yarn feeders. For TPU softer than 85A, the company says its original yarn feeders can work, with high-speed motors replaced by lower-speed versions.
Consumer and industrial versions
• FDM 3DC, consumer model: Supports spools from 0.2 to 3 kg, with closed-loop real-time tension monitoring.
• FDM 3 PRO, industrial model: For professionals and small farms, supporting larger spools and greater stability.
• FDM 8 PLUS: Supports 1–8 kg spools, the company's main differentiated offering.
Large spools are a particular focus. Most printers use standard one-kilogram rolls; heavier rolls increase extruder load and fluctuations. Bosi separates spool feeding from extrusion, releasing filament and delivering it to the extruder at constant tension. The company says two-, three- and eight-kilogram rolls can feed at the same tension as a 200-gram spool.
Farms can run longer without frequent spool changes or material shortages; industrial users can reduce unit material costs; TPU users can address resistance when pulling soft filament.
A company representative said the system permits higher speed and more even, attractive surfaces. Constant tension stabilizes extrusion and layer deposition.
Manufacturing experience and customization
Under a section describing 18 years of manufacturing experience, the source highlights in-house injection molding, SMT assembly and a motor-related manufacturing workshop. Bosi handles the chain from raw materials to finished products, supporting control of costs and quality and customized requirements.
It offers its own products, custom development, contract manufacturing and industry solutions. Dozens of patents cover feeding mechanisms, tension control and closed-loop systems. A dedicated website is FDMFEEDING.COM.
Rather than manufacturing complete printers or competing with end-user brands, it focuses on a critical component, following its approach in textiles and electronic wire feeding.
Filament feeding becomes a new competitive area
Nanjixiong has seen increasing interest since the beginning of 2026. AMS and CFS primarily address multicolor changes. The source describes their feed approach as relying on extruder pull, retraction and buffers, with limitations for TPU and large spools.
Bosi focuses on stable feeding rather than color selection. The functions can complement one another: a color system switches materials while the feeder controls tension. This could be especially valuable to farms, industrial users and flexible-filament enthusiasts.
Expansion would affect motor, sensor and molded-component suppliers; SMT and assembly capacity; and farms, industrial users and material producers. Reliable support for two-, three- and eight-kilogram spools could also change packaging and sales formats.
Five hundred free trial units
The company representative noted that Nanjixiong's three print farm conferences had connected thousands of farms nationwide and invited operators to request free samples.
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Each farm can receive one or two units depending on printer count, with 500 units available until allocated. If demand is excessive, selection will use review or a draw. Nanjixiong welcomed the offer's generosity.
Nanjixiong's observation
Bosi's entry deserves attention. Recent innovation has concentrated on faster machines, additional heads and larger volumes, while fundamental components have received less optimization. Feeding is an example: many solutions prioritize basic adequacy rather than deeper tension control.
Bosi brings mature engineering experience from textile and electronic wire applications. Transferring validated technology to a new setting can be more efficient than starting from scratch.
Challenges remain. Consumers want low cost, attractive design and visual compatibility with printers. Industrial users need reliability, durability and continuous 24/7 operation. Bosi must demonstrate performance across those settings and build recognition.
The direction nevertheless matters: as printing becomes a production tool, component reliability becomes increasingly important, and feeding technology offers room for more specialized entrants.
AI-translated from an article by Kuaixiong on Nanjixiong, originally published on 2026-10-13. Text and images retain the original source attribution. Read the original Chinese article
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