equipment: Did use Still Spirits Reflux Now use 50l Keg with Pot head for Rum and Neutral stripping runs on gas . LM/VM head with 1m packed 2" on Still Spirits boiler for Neutrals.
I'm not sure about it but the way they advertise about it when it's cadmium free can only mean it's bad shit generally :? All our studs and nuts used for gas and oil piping at work are cadmium plated for corrosion purposes in a salty environment :think:
I'm no expert. I've read most of the dangers related to inhalation of fumes, but not sure if boiling hot ethanol vapour has any ability to leach (it does with a lot of things).
Regardless, I wasn't taking the risk and got cadmium free rods. I just went to a local welding supplies place around the corner from Bunnings :p Cost a little more, but I have peace of mind.
equipment: Did use Still Spirits Reflux Now use 50l Keg with Pot head for Rum and Neutral stripping runs on gas . LM/VM head with 1m packed 2" on Still Spirits boiler for Neutrals.
In the jewellery trade they regularly use gold solders with cadmium in them. The cadmium is in such small quantities that there is very little likelihood of health problems.
Having worked with this for a few decades now I can say it hasn't affected me....., affected me,...... affected me. 8-} 8-}
I sell silver brazing alloy rods at work in 2%, 5% &15%. I just checked and all the packets say "cadmium free brazing alloy" Made by a company called Silbraze. I would say it would be a standard across all industries so I am pretty sure the Bunnings stuff will be all good.
When i built my pot still I only used silver solder no soft solder and after reading this thread last night i became a little concerned. So spoke to my welding supplier today who happens to be an ex boilermaker, he can't remember the last time he saw or used any silver solder containing cadmium and told me it is now illegal to sell sticks/rods containing it. However this is only what I've been told. Cheers Kicka.
Just resurrecting this thread as it turns out I've got a shit load of high silver content brazing rods. Only problem is they are 20yr+ old. Ive noticed it contains 24% cadmium and had a read about it but can only find the risk are with the dust and fumes.
Does anyone have any solid facts that it can be leeched into the ethanol?
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Cadmium's a carcinogen mate, that's why it's not used anymore (except in the processing of aircraft parts). Best off ditching them or use supplied air when using them.
equipment: 4", 4 plate "Frankenfurter" copper bubbler and blockhead on a 50L 3000W electric boiler, 10000W controller - don't even know why I need that much, all grain HERMS system through 18G HLT keg and 50L mash tun.
Cadmium is about 10000 times more toxic than lead (so my mineral science lecturer quoted). 24% sounds a bit high though. Certainly wouldn't use them in any food/drink machinery.
equipment: 180 litre fermenter x 2 30 liter boiler PDA-1 2" four plate modular bubbler 2" one meter long LM column 110 liter boiler with 25 liter (max) inline thumper 4" x 4 plate bubble cap still
Lowie wrote:Cadmium's a carcinogen mate, that's why it's not used anymore (except in the processing of aircraft parts). Best off ditching them or use supplied air when using them.
What does it cost to buy the Cadmium rods now they may be more valuable to someone who has need for them.
Yeah i might see if they are worth more to someone else. Working with them isn't a problem as I'd just use a dust mask and gloves but i guess if it is going to actually leach into the ethanol then thats a different story.
How many rods would i go through making a 4" 7 tube RC and a 2" 4 tube PC if they were hard soldered? And soft solder the rest.
Or my other option, roughly how much soft solder would I go through making 4" 5 plate with 2" single bubble caps? ~x(
equipment: 180 litre fermenter x 2 30 liter boiler PDA-1 2" four plate modular bubbler 2" one meter long LM column 110 liter boiler with 25 liter (max) inline thumper 4" x 4 plate bubble cap still