A twelve-hour in a single day print can prove effective, or it may possibly come again stringy and inconsistent with no change to the slicer settings that may clarify why. The standard trigger is moisture. A spool left in an open holder for just a few humid days absorbs sufficient water to compromise a print with out giving any warning beforehand.
Anybody operating a multi-material AMS setup over time has seen this, particularly with extra moisture-sensitive supplies equivalent to nylon and PETG, although even PLA can degrade after extended moisture publicity. The usual repair, drying the spool individually, works in precept however hardly ever suits actual workflows, because it means pausing an energetic queue or planning a drying cycle a day prematurely.
That is the issue Chinese language 3D printing expertise agency SUNLU constructed the AMS Lite Heater to unravel. The system is a {hardware} improve for the Bambu Lab AMS Lite, due out July 20, 2026, and its core concept is to let the AMS Lite dry filament and print on the similar time, so customers are not selecting between the 2.
Engineering Constant Filament Drying
The mechanism behind that declare begins with how air strikes via the chamber. The unit makes use of a dual-airflow channel design that distributes heated air extra evenly via the chamber, a element that issues extra in apply than it suggests on a spec sheet.
Dryers utilizing single-channel or single-sided heating programs can undergo from uneven warmth distribution, creating hotter and cooler zones throughout the spool, so one part of filament finally ends up over-dried whereas one other stays underdone. Distributing airflow evenly addresses a failure mode that exhibits up within the completed half, not simply in a temperature studying.
That very same consideration to consistency carries into how the system manages moisture as soon as it has been pulled from the filament. A built-in vent actively expels moist air throughout operation, and a humidity sensor lets the operator set a threshold and step away from the method completely. Humidity ranges can rise throughout storage or between print cycles, and the system begins drying robotically when preset humidity thresholds are exceeded.
That automation is a real comfort for anybody unwilling to watch humidity manually between prints, although it’s value noting that automated thresholds nonetheless profit from periodic evaluation relatively than a single set-and-forget adjustment, since ambient humidity situations can fluctuate considerably throughout working environments.
Materials Compatibility and Security
How a lot of that drying capability a given consumer wants relies upon largely on what they print. Most drying temperature is 70°C, ample for PLA and PETG and inside usable vary for ABS, ASA, PA, and PC.
That ceiling is the significant line between a tool suited to informal PLA work and one able to supporting the engineering-grade filaments utilized in extra demanding functions. For informal PLA customers, the advantages might heart extra on comfort and workflow effectivity. For operators working in nylon or polycarbonate, the drying functionality turns into a way more important benefit.
Working a heating ingredient for prolonged, typically unattended stretches raises an apparent query of security. SUNLU addresses it via layered monitoring relatively than a single cutoff, combining door-open detection, temperature monitoring, and a number of built-in security protections, a sensible design for in a single day operation.
Timed to SUNLU’s thirteenth anniversary, the thought is that drying needs to be a part of how the 3D printer runs relatively than a separate job. The corporate is backing that push with an anniversary marketing campaign providing filament and {hardware} giveaways to its consumer neighborhood, together with an growth of its US manufacturing footprint to shorten supply occasions for North American clients.
The AMS Lite Heater goes reside July 20 at 07:00 UTC. Additional pricing and availability particulars haven’t but been disclosed by SUNLU. For anybody who has dried spools by hand or simply lived with the occasional stringy print, it targets an issue most AMS Lite house owners have already run into.
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Featured picture exhibits close-up render of the SUNLU AMS Lite Heater linked to a Bambu Lab 3D printer. Picture by way of SUNLU.
