Does anyone actually know what the PTFE tubes from Qidi are actually rated for temp wise??
Got a guy I used to buy robotics parts from says he has PTFE tubing that's rated for 800°F and same size (at least O.D. is) as what I got in printer.

Also...how many print hours yall think the stock brass nozzles could handle running sandstone filament? Have talk to those using stainless plated nozzles saying they can only run about 800-1000 hours of that stuff for nozzles need changed out.