Honestly Tony, I have tried every combination I can think of and have not had a "failure". Once I got a white spot while finishing. I let it sit overnight and sanded aggressively the next day, then applied again and everything was fine. GluBoost has been used for pens for just over a year. I have had only a couple people report problems that seem to revolve around finishing in high humidity situations. I know of NO FLAWLESS way to finish wood, so I currently believe GluBoost is the best for pens.
Now, we are a dealer for Mercury as well, so I will be testing THEIR product. I like being in a position where no one can claim I back it only because I sell it--now I sell them all, so I have no ox to gore.
I never doubt your experience - nor thought it would result in failures. Their instructions (GB's) and the Dryer (sp?) videos demonstrate blue ("medium") first, followed by orange. I always prefer the logic of thin first. However, I thought the orange was suppose to fill the small scratches left by the blue (just my own thinking after reading the labeling).
I have a ton of GB and Mercury. I have been performing comparison for close to 3 months now - and have been accelerating both CAs with pump BSI in a sure shot compressed air atomizer. I find I have to use more of the GB accel than others, and the Mercury aerosol cans, I continue to have a problem with (no accel. coming out, although they do cheerfully take it back..I got tired of traveling 5 miles to the RC shop).
I bought a rH monitor for my shop. It is decent one,
but I have never calibrated it - so who knows. I find that I apply 8 coats of Mercury to 5 or 6 coats of GB - don't know why, I haven't sanded through, it just looks better to me. Over the last 3 months the rH in my shop has been between 47 and 50, and the temp between 69 and 72.
I have cooked the thin (orange) BG with the BSI sure shot set up. However, since holding it at east 10 to 12 inches away, I have not burnt anything (I do get some on the lathe, but i am fine with that and at 40% off of whatever HL is selling it for, I deal with it. I also like allowing things to sit for 8 to 12 hours (another who knows; at least in my limited mind). I don't think a 3 month, limited-controlled experiment is much of a experiment/test/comparison, but I will continue it until I run out of GB or Mercury.
FWIW.
Thanks again for the video!