3DXTECH - 1.75mm Obsidian Carbon Fiber + PA6 - Markforged Onyx Alternative 3D Filament 1kg Reel, 3D Printing Filament - Made in USA (Black, 1.75mm)

Out of the bag, it worked great, but over time started having moisture issues. That was probably on me though; I had changed out my bags of silica dry gel for DryTote ASIN: B098ZB33DP. It got so bad that the printer would not get past the nozzle/print test stage. You could hear the filament popping while doing an extrusion test.The regular filament dryers won't get the job done, b/c they are not hot enough per 3DXTech's spec. So I picked up a small food dehydrator ASIN: B09MCHTXHW that gets up to 190F and baked it w/ (2) desiccant containers from Slice Engineering, ASIN: B0DD296FCS overnight for 7 hours. Popped the reel in the printer's dry box in the morning and no issues. (Currently have (4) Slice Engineering desiccants in the dry box)

Took a shot and ordered a roll to try in my Markforged Mark2. Results were great! Initial dimensional tests were on par with Onyx. Finish and overall appearance are the same. Worked well with continuous fiber too. I will be using this from now on.