[brunoinbelgium]

the lingot i started with was about 5X3 cm and about 3mm thick
as we laminated it we have to be careful to change directions but it took about 5 minutes to do progressively with an electric mill and now i have an anode of a few 10th of mm but it is well sufficient
250gr are more than enough (i will weight and let you know)
a good thing is to anneal ( warm up) the silver between the successives passes in the mill so it does not tear apart

[brunoinbelgium]

hello i work with 18X13CM format and i had my anode made by first molding a lingot by a jeweler and then a rolling mill ( electric ) did the job in a few minute it is easy to control the size by rolling in one direction and then the other
regards
Bruno

[brunoinbelgium]

hello everyone
i am very grateful for all the messages and I appreciate very much your support:

For Mike : MANY thanks to show a better way to handle bromine – i am ordering silicagel asap and will try that method as i get a new tighter fuming box build ( with ptfe this time)

for Photolytic : thanks for your attention and yes i am using a vacuum cold mercury method
the temperature is around 15°C to 18°c and a 5 hours time is common – i check with a red light (rubylith around a bulb) till i think it is enough
the pump i use has an outlet ballon which i filled up with zinc and copper scraps so the remaining mercury vapor should react with these and the outlet last pipe is in the fume hood
i was not aware of a Daguerreian Society meeting in France please let me know the details and i will work my schedule
i was not a member so far but i would happily do so if they are organizing events on this side of the ocean

for Jgmotamedi : you are right about i have to solve the problems and i am rethinking about other way to handle bromine safely : that is why i addressed the first help message to the forum .I did try a way that i realize is not working and i wanted to know how other fellows were doing it
thank you very much again for your reaction and be sure i do as much possible to stay on the safe side
Bruno

[brunoinbelgium]

Hi
thank you for your reaction -it helped me to figure out where the problem is
the hood is not a sliding one and as i need to work in it , it is a flipping up plexyglass pane opening too wide
i will try to get a smoke bomb to test it (do you have an address where to get this ?)
obviously what is working for iodine must be done much tighter for bromine and i will take some time to rebuild a fuming box using ptfe sheet
could you indicate me what dilution of bromine is working best ? and what is the less aggressive lime or water ?
for the mercury , i use a vacuum pump and a dessicator so i think i am on the safe side
thanks again
Bruno

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