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Which approach next?
Caustic soda 57%  57%  [ 8 ]
Hacksaw blade 14%  14%  [ 2 ]
Drill it out 0%  0%  [ 0 ]
Persist with anti-seize and quill stem 29%  29%  [ 4 ]
Total votes : 14
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PostPosted: Fri Jun 15, 2012 10:22 pm 
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Location: All you other Iron Men are just imitating
Ammonia and penetratimg oil (not wd40) for me everyime..soaked on the inside (if you can seal it) and out. Will take any decals off but should leave the paintwork ok...unlike caustic.

Worked on every one so far...especially along with the LGF technique


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PostPosted: Fri Jun 15, 2012 10:33 pm 
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Location: The Cock Inn, Tillett, Herts
Sorry, I'm a berk. Just re read and see the post is snapped off in the frame.

To the engineers I go, get that sod removed by sold old feller with a grey beard and a name line 'Derek'.


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PostPosted: Fri Jun 15, 2012 11:28 pm 
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Any frame I've had with a stuck seatpost (and I've had a few :roll: ) go straight to local engineering outfit, say 'I'm not in a hurry' and leave it with them for a week or so to do in a lunch break. Normally costs about a tenner.


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PostPosted: Fri Jun 15, 2012 11:35 pm 
retrobike rider / Gold Trader
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retroyetirigid wrote:
Any frame I've had with a stuck seatpost (and I've had a few :roll: ) go straight to local engineering outfit, say 'I'm not in a hurry' and leave it with them for a week or so to do in a lunch break. Normally costs about a tenner.


Bugger mine cost £15 :( but then still worth every penny and no damage was sustained during the process :D if I had done it I'm guessing it would have ended up messy.


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PostPosted: Sat Jun 16, 2012 10:46 am 
retrobike rider / Gold Trader
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Ok, this is the best picture I could take in my slightly hungover state

Image

I've just introduce a healthy fresh dose of PlusGas to it.

I hadn't thought of taking it somehwere to get them to get it out for me. If I can find somewhere nearby that will do it for £10-£20 then that is probably the best option, tempting as the caustic soda is. I don't have a car, which makes it a little harder to take it anywhere, but I should be able to get round that.


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PostPosted: Sat Jun 16, 2012 10:59 am 
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Jussa wrote:
Well it worked, admittedly the engineering company made it look easy but then it's their job :)


result 8)


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PostPosted: Tue Jul 03, 2012 6:12 pm 
retrobike rider / Gold Trader
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Well, I took the frame a couple of places, but no-one seemed confident at being able to machine it out, given the amount of seat tube in there and how far down it is (I think there's about 200mm in there by my measurements).

Soooooo ...... caustic soda it is!

I bought some on my way home today, so as soon as someone gets here to document it on video - off I go!

I actually only bought 500g of caustic soda, because I forgot to check how much I needed and since the shop is shut, I may have to finish the job tomorrow night.

Update with video to follow!


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PostPosted: Sat Jul 07, 2012 10:46 am 
retrobike rider / Gold Trader
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Success!!!

http://youtu.be/-dYnSVVDxrE

I'm glad I decided to take this approach in the end. It was cheap, very effective, easy and most importantly fun.

If you have a seat post that's resisting all other attempts to remove it I'd recommend caustic soda.

It's ideal if you are going to have the frame repainted anyway, but if you intend to keep the paint job I wouldn't necessarily rule it out, as I easil;y could have prevented it going on the paint if I had needed to and hadn't been enjoying it so much.


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PostPosted: Sat Jul 07, 2012 1:15 pm 
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Where did you get that "Bartoline" caustic soda? A hardware shop? It looks like proper strong stuff unlike the weak soda I got on the high street!

Great for cleaning chains I've found.


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PostPosted: Sat Jul 07, 2012 2:16 pm 
retrobike rider / Gold Trader
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Joined: Mon Jun 22, 2009 11:09 am
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Location: Devon
Great video. How smooth is the seattube now? Have you tried putting a seatpost in?


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