I have just started using my new F1 along with the desktop smoke purifier, all indoors with no venting outside from the purifier. Measuring the PM2.5 and PM10 levels before starting a simple job they were 4.8 and 7.8 respectively. After engraving “coffee time” on a piece of 3mm basswood plywood the levels rose to 309 and 515 respectively, which are extremely hazardous, and took a further 25 minutes after the completion of the engraving to reduce to a safe lower level of 5 and 6.8. The room i am using is very small, 2.8m x 3.2m.

I thought the filter would keep the levels a lot lower than this. Just wondering if anyone uses the F1 with indoor filter venting and if they have any recommendations.