Well, that is sort of good and bad news: the good news is that the paint comes of easily if you want a shiny silver clip, the bad news is that the paint comes of easily...
I think a bare metal clip (without paint) would have been nicer (perhaps Sofirn could switch to unpainted silver clips for the next batch).
[quote=slowtechstef]
So regarding the Sofirn C01 pocket clips:
Prototype: clip not good, breaks.
First production batch: clip is good, strong.
Second production batch: clip is not good, bends.
Mine is also soft. maybe if i heat it up to red hot and then cool it down in water or oil the metal will harden a bit. will try that tomorrow.
About the weak clip, we talked with the supplier who told clips are from the same mould, so it might be different material. The QC workmake will talk with the supplier seriously today and resolve this issue.
You have done a fantastic job of building a high CRI light, with a choice of two color temperatures, and for a
very low price.
Thank You!
thanks for the link to the Yuji LEDs, it gives lumen values
existing C01 LED: 6.1-8.8 lm
alternative LED: 18-22 lm
suggestion:
The 18 lumen version would be really cool with a QTC, like the Eiger uses .
But skip the LiIon compatibility, to keep the cost down… I dont need 100 lumens from AAA… 20 is plenty for what that little light needs to do.
.
I wonder if there is interest in a Special BLF group buy for a Copper Sofirn C18 with QTC?
Infinitely variable from 0-20 lumens, at the twist of your fingers… whats not to Love?
Depends on the material. There’s a good chance it only gets very brittle and snaps at first use.
It is for a reason that the Dutch version of the expression “the tricks of the trade” is “het geheim van de smid” (the secret of the blacksmith).
Thank you for the photos
The EDC01 w XP-G3 has Green Tint, and is Not High CRI, so not the same Quality of Light, as the Sofirn CO1 w Yuji
For people that want to go beyond the single mode Sofirn C01, but still with High CRI in AAA size, I highly recommend Clemence’s latest offering, a High CRI 3 mode AAA light
So i threw the clip in my fireplace. The black paint was gone real fast. Waited till red hot and dipped it in olive oil(extra virgin lol). Then i tempered it by hanging it on the metal fireshield(around 200c) for 2 hours. Its much harder now but can still be bend.
I would say definitely yes, that the artifact in the Sofirn C01 is caused by the shiny cone.
.
.
My Utorch S1 Mini with shiny bezel, has a round artifact in the center of the beam, on right.
l-r 2000k E21a, 4500k N219b, 6500k XP-L
the light on the left has black magic marker on the bezel, the center light has black paint, on the right shiny
Note the three lights pictured, Utorch S1 Mini, have Aspheric Lenses, same as the Yuji LED. They are NOT supposed to have a hotspot.
conclusion
Shiny bezel causes hotspot artifacts in Sofirn C01
That’s good info polarweis, thank you. :+1:
You said you went to “red hot” & got some results.
When mine get here I think I am going to try going a bit hotter, into the ‘Orange hot’ range; temper a bit hotter too & see what happens.
It would sure help if we knew what metal the clip was made of.
……. Edit: It would seem to indicate, since you were able to achieve some degree of hardness; it is not ‘mild steel’ at least.