Hi Dear, I have used 99,9 isoprophyl alcohol and window cleaner (blue liquid) none of those were harmful to the AR coating (purplish or greenish) I guess the traces you see when you use 70% isoprophyl is due to the residue left of almost 30% water content. Hope this help you.
I have to smile when I see you post nodoubt… we had a good friend named Winston that worked in an Automotive parts store who used to say No Doubt! all the time! lol [ie: “These parts are EXPENSIVE!” “No Doubt!”] As such, your tattletale response above elicited an immediate “No doubt!” in my mind, making me laugh at the double entendre. (all this instead of simply saying …)
I’m thinking of getting a 2nd TN42, would the CW be better at cloud-lighting than the NW? After all it is a cooler temperature beam that works wonders at illuminating fog than a warm one.
Cooler tints tend to have more backscatter in general, and so probably would illuminate the surface of a cloud more. When trying to illuminate solid objects to view them, this is a disadvantage, but it might well work better for that.
Thanks for the advice. Was torn between the personally better tint of the NW and the cloud-lighting and power of the CW. Guess i’ll be having a CW this time!
If memory serves, 70% alcohol, often labeled “Rubbing Alcohol”, has a small amount of oil in it to not be as drying to the skin. The easily found 91% isopropyl should leave less of a residue.
I’m with you. I much prefer neutral tints. I am working on a Neutral tint TN42 mod for release soon. It will out throw all the TN42 mods to date. Including the CW versions. And this without the lumen penalty going to a smaller die. So best of all worlds.
OMG Lumens…. and omg throw, combined. That is what I am interested in. You have my attention. I just saw your post about this item in the other forum. Please keep us posted.
On my website. onestopthrowshop.com The site is admittedly very barren ATM. For about 7 months now I have been in an intense research phase. No time to make lights. Been working on fundamental technologies to enable a new generation of lights. Something special. It has gotten harder and harder to stay ahead of the game. I really have no desire to push high volumes of product. There are some things that can only be done with time, patience, and a deft hand.
Before my flashlight era(BFE) I started a company to make mod and racing parts for Saabs. Saabs were my chief love at the time. My wife started to get spooked about liability however so I pulled out. I have always had a deep love of engineering and I am glad to have an outlet for this in flashlights. As I have said before I will do it until I get bored. Ten years in now and hasn’t happened yet though.