I needed a way to check for hot spots so I got some hemp fibers and when I "vape" them I can get some darkening of the fibers which shows where the coil is hot. If I get a "hot spot" that covers 70% of the load I'm calling it good. Several rotations should give almost 100% extraction, I'm hoping. I did find that what looked good visually wasn't always good. I had a few that had a hot spot to the side which only covered 20 or 30% of the load. Some were fine as is.
This adds another 10 or 20 minutes to each build but it has to be done.
So this brings up another topic, is it worth offering hemp fibers on my website? I'm thinking $5/oz with $3-4 shipping. If no one is interested that's fine but I had to buy a kilo of fibers and that will last a long time so if you need some let me know.
Additional 30 minutes for quality control is appreciated.
Pretty certain that this sentiment will be echoed by others.