![]() ![]() I then stored the filament in my watertight storage bin. After a few minutes I saw that the thermometer showed a temperature close to 45° C, and varied only one or two degrees C up or down, proving this dehydrator would suit my needs.Īfter reading a few posts on filament drying temperatures and times, I set the dehydrator for 50° C, popped the yellow PLA reel in, and left it for about 4 hours. So I bought the Rosewill food dehydrator, cut reel-sized holes out of all but one of the trays, stuck a meat thermometer into it, and set the dehydrator for 45° C. I imagine I could have used any < 3 mm diameter needle or filament. That didn’t work so well I had to push it much further down, using a piece of smaller-diameter filament. ![]() The second snap happened lower in the extruder, so I heated the hot end to extrusion temperature and this time pushed the filament down into the extruder. The second time the filament snapped convinced me to try drying the reel – because brittle filament is one symptom of wet filament.īy the way, removing the broken filament from the extruder was a bit of a pain: the first time it snapped, I heated the hot end to extrusion temperature while I pulled on the end of the filament with a pair of hemostats (big tweezers). On two occasions, while I was printing using a yellow PolyLite PLA, the filament snapped off in the extruder, stopping the print and leaving a chunk of filament in the extruder that was hard to remove. Some of that filament showed signs of being wet. ![]() I’ve described my filament storage in detail in another post.Ĭutting a tray., leaving two rings for support One cut tray The assembled dehydrator, with an un-cut tray on the bottom The temperature control, in Celsius and Fahrenheit, set to 45° C Checking the thermostat’s accuracy with a meat thermometer: 46.6° C My waterproof reel bin, with a box of desiccant Drying a Yellow PLAĪs part of moving from Fusion 360 to FreeCAD (that’s another story), I found myself doing more printing than I had in a few years, using filament that was several years old. Once my filament is dry, I store it in a watertight storage bin, with desiccant.I’ve read you shouldn’t heat PLA higher than about 55° C, or it will melt into an unusable blob on the reel. Based on several recommendations I’d found, I dehydrated my wet PLA at 50° C for about 8 hours, depending on how bad the filament was.It’s probably not the best monitor, but it covered the right range: 40° C to 150° C. ![]()
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