Well in that case I’m pretty convinced it’s the residue on the cap from kief, dust, etc. I know my fingers are often sticky after I’m done packing. And that is consistent with your observation that it occurs on the first heat up.
Edit: I misread your post.. but for me it does happen on my first heat up after handling the cap, then it burn off so on subsequent heat ups nothing wisps out.
I use a small nail as a poker and stoker and once the point gets gunky I stick it in the IH, it lets off a similar but thicker wisp and then it’s very easy to wipe off
Edit: I misread your post.. but for me it does happen on my first heat up after handling the cap, then it burn off so on subsequent heat ups nothing wisps out.
I use a small nail as a poker and stoker and once the point gets gunky I stick it in the IH, it lets off a similar but thicker wisp and then it’s very easy to wipe off