caustic stuck old alloy seatpost problem

[firebird4130]

Right, I have the old stuck alloy post issue, so I have rather reluctantly began the potentially lethal task of dissolving it with caustic, trouble is this has been going on for the past five days and nights now with me out there pouring in the crystals, followed by a load of boiling water then hot footing it back indoors like i've just lit saddam hussains favourite firework he had hidden under his mattress, trouble is everytime I go back to inspect my handywork(sunglasses of course on) nothings happened, just a small amount of blackish slime, am I doing something wrong, do I need to invest in more potent chemicals, any advice would be much appreciated neighbours are getting suspicious   

[steve69]

I would dissolve the crystals in hot water first, then pour into the seat tube. i think you may have clogged the tube with crystals (which seems to set like stone)
Try getting a long screwdriver and bore a hole down it so the water has a better chance of dissolving the caustic.

Good luck

it is a slow job, try not to rush the process...   slowly slowly catchy monkey 

[jT Racing]

Yeah, he's bang on. Make your mix, pour it in. Patience is needed.

[firebird4130]

cool, think you may have it there I will try the screwdriver tomorrow 

[animal]

U don't need a lot of crystals buddy  bit at a time fella  I have done loads and it always works  Helps if it isn't done outside in the cold . I used a blow torch 2 reinvigorate the mixture . Plus every time u do a mix flush out all the gunk then start again  murder that ally post fella 

[BENDYCAT ELEVENTEEN]

well funny this question has been ask as i'm doing the same boring thing - and guess the CS has gone solid inside

had a look today and it seem to of been sick, as it looks like a poltergeist has thrown up black stuff and it's drip down the frame and started to dry white - freaky stuff 

I can see the post has got smaller and just wonder if next year it will be ready to let go 

[NORTY40]

. I used a blow torch 2 reinvigorate the mixture .

     a few deep breaths over the end of the hole just to check the mixture is working too ...... you should feel a slight burning sensation around the inner lung area 

Good luck Fraz , it does work 

[firebird4130]

cheers , will keep at it then  was about to give up and try to get it drilled out somewhere , hopefully won't have to ever use the sh1t again after this, chemicals and me is just not a good idea   

. I used a blow torch 2 reinvigorate the mixture .

     a few deep breaths over the end of the hole just to check the mixture is working too ...... you should feel a slight burning sensation around the inner lung area 

Good luck Fraz , it does work 

U don't need a lot of crystals buddy  bit at a time fella  I have done loads and it always works  Helps if it isn't done outside in the cold . I used a blow torch 2 reinvigorate the mixture . Plus every time u do a mix flush out all the gunk then start again  murder that ally post fella 

[ukoldschool]

cheers , will keep at it then  was about to give up and try to get it drilled out somewhere , hopefully won't have to ever use the sh1t again after this, chemicals and me is just not a good idea   

thats odd, me + chemicals = the worlds greatest dancer

[firebird4130]

 

[paddy2]

i always use liquid concentrate caustic .just fill and watch it go!!it is industrial caustic liquid tho

[TORKER mick]

i always use liquid concentrate caustic .just fill and watch it go!!it is industrial caustic liquid tho

where do you get that from

[paddy2]

i always use liquid concentrate caustic .just fill and watch it go!!it is industrial caustic liquid tho

where do you get that from

work matey we use it alot so take a bit when i need it

[NORTY40]

Has it worked yet 

[Pooch]

Gloves and goggles needed...!!! It works and good luck

[firebird4130]

not worked yet, the thinned remnants are still stuck to the edges of the seatpost tube,I can now get a post in far enough if I cut it down, so may just do that 

[Rodgy1970]

not worked yet, the thinned remnants are still stuck to the edges of the seatpost tube,I can now get a post in far enough if I cut it down, so may just do that 

caustic it again   

[Peter J]

Flush with warm (not Boiling Hot) water and as is says on the bottle.....

Rinse and repeat 

Flush a few times sounds as if you have too much gunk/CS/debris down the seat tube.