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...samc suddenly realises he left the bottom bracket in ...
Caustic Soda to melt stuck seatpost: COMPLETED!! (see p.2)
- Thread starter samc
- Start date
samc
Retro Guru
FluffyChicken":29k4fb0j said:
Well spotted
I know but I haven't got a BB tool! I plugged the tube below the ally as best I could, but the bugger was still not watertight - hopefully the BB doesn't use too much Al; it's not exactly the best material for cups or bearings...? I guess I'll find out when I try & ride it!@russ77 - I tried to plug the tube with some old thin sheet rubber which I rammed down as far/hard as I could, but all it does is slow down the leakage a bit so the liquid has a chance to sit on the Al. I haven't tried cleaning it out yet - reckon I'll do another melting session first...
DeletedUser006
Old School Grand Master
Very intersteing thread
You havnt mentioned that you have the stuck post out ! I may try this to a kona frame that is in need of the same fix.
Do you have picures of frame without post in ? ? i would be interested to see the aftermath
You havnt mentioned that you have the stuck post out ! I may try this to a kona frame that is in need of the same fix.
Do you have picures of frame without post in ? ? i would be interested to see the aftermath
samc
Retro Guru
Gravy Monster":1ylc1ln4 said:Very intersteing thread
You havnt mentioned that you have the stuck post out ! I may try this to a kona frame that is in need of the same fix.
I haven't finished yet.. it's melted quite a bit away but I haven't had a chance to try & get it out - I'll do another Soda session I reckon, and then clean it up and give it a good go.
samc
Retro Guru
Here's some seriously high-brow videos of the process:
<< Sort of an introduction
<< Some of the equipment I used
<< Measuring the temperature
Bonus: here's a video of me spilling caustic soda everywhere.
I haven't actually tried to get the thing out yet... I'll post a pic or two of the aftermath once it's done.
<< Sort of an introduction << Some of the equipment I used << Measuring the temperatureBonus: here's a video of me spilling caustic soda everywhere.
I haven't actually tried to get the thing out yet... I'll post a pic or two of the aftermath once it's done.
FairfaxPat
Senior Retro Guru
I have used ammonia with great success to free up stuck seatposts in the past.
