Technical & Reference Section > Tech and Restoration

Supergoose Seatpost Problem - A BIG ONE

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BENDYCAT ELEVENTEEN:
the causic sode eats the alloy metal and dissolves it - it just turns to a mush that you have to wash out ever so oftern and put some more stuff in with hot water - in the end it's all gone

takes time, but is a good way if you are not sure that you don't want to damage it or know how to drill it out !

h2ggv:

--- Quote from: BENDYCAT ELEVENTEEN on March 17, 2012, 06:27 PM ---the causic sode eats the alloy metal and dissolves it - it just turns to a mush that you have to wash out ever so oftern and put some more stuff in with hot water - in the end it's all gone

takes time, but is a good way if you are not sure that you don't want to damage it or know how to drill it out !

--- End quote ---

 That's the only way then or a machine shop to drill it out

750Rush:
I've just got back in. Many thansk for the advice. Where can you but caustic soda from, B&Q?

Will it damage the chrome if it spills?

I suppose the tube will need re-chroming anyway once I can find someone to weld it?

Sorry for all the questions!

dan-dare:
Caustic will only damage non-ferrous metals... :daumenhoch:

BENDYCAT ELEVENTEEN:
should be ok on chrome - but as you say re-chrome or a paint will be on the cards

you can get it on ebay - maybe ask other members which they like best

does take a bit of time - but works

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