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It's always so satisfying when a stuck seat post finally comes out.

Truely inspiring. Your sense of innovation, patience and resilience is unmatched. Thank you RJ.

Awesome! As someone who has battled and lost to more than one frozen seatpost I am totally digging this thread. Thank you for the inspiration!

This was more tense than a lot of thriller movies out there.

Oh man I just made a tool like yours and then my friend said to check out your video. The tool works! I do agree adding a handle would help for control and safety. I do like yours in that it is very heavy duty and the extractor section that connects to the seatpost is nice or what I need to build. Hearing the pop was victory!

putting your fingers on the inner sides of this contraption seems like a really bad idea when it's under a lot of pressure. If any of its components break, you'd be down a few fingers.

Yeah! That is a fricking satisfying sound! Great job RJ! I bet Park Tool will be coming out with a design like this one any day now! LOL.

Thanks for the video. I had the same problem with the seat post, but no welder. I broke the seat post off just above the frame while trying various methods. I was able to grind down the diameter of some 1/2 inch washers, then slid them up the seat tube and engaged a nut into a length of allthread to catch under the seat post. I added the weight from a slide hammer over the allthread, then added washers and a nut for the stop. Worked great with less effort than I expected. I also had to drill out a couple of rivnuts for the bottle cage to get the washers past, but luckily you also have a video on installing those. Maybe Park could make some plugs with an ID thread and a cutout to clear the rivnuts. A few different sizes for different seat tube diameters. Keep up the good work.

Fascinating. Loved the multiple booms as it let go. I wasn't expecting that. The whole time I was wondering about frame damage..props for examining that at the end.

Just amazing how resistant the stuck seat post was. Thanks!

Awesome videos, and even more awesome tools by the master mind him self, RJ The Bike Guy. You need to patent that tool ASAP.

That was so satisfying hearing it pop! Great job RJ, love your homemade tools. Still use the one to remove stuck BB cups that you showed us how to make.

Brilliant! Satisfaction level 1000!

Great simple and robust design. Look forward to seeing future testing.

The tool you make is just work well. Amazing.

THIS IS AWESOME RJ!

I like those DIY tools... Your brain is working! Thanks for sharing

Love your perseverance!

Soooo satisfying. Great job!!!

Nice! that first pop sounded like the bottom bracket had cracked...very ingenuous idea RJ...

Excellent tool ! Good job

Fantastic job!

RJ you deserve one medal great job mate 😀.

Major congrats!

What a great device...nice work RJ.

that tool is BOSS!!

Great Tool !!!

Working very good...

Great tool!

Awesome video RJ!

Congratulations. Nice tool.

Love it. When I was a kid I rode my Raleigh Ultra Burner through the local river. After the seatpost welded itself. My dad tried heating, wrenching, wd40, hammering etc. It didn't budge. Had to scrap the bike. Your contraption would have been a life saver. Cheers you've earned yourself a new subscriber.

So cool!

Agree with all the improvements and dangers for use. At the very least you have broken new ground....good job.

I was looking forward to this!

Incredible!

I really could need that! NICE Idea!

What a cool idea! Struggling with my seized seatpost since april.

Excelente !! Muy ingenioso mr. RJ

Good job 👍 I move my seatpost every so often to make sure its ok..

Well done, thank you.

Great tool, I'm going into the garage to make one!

I’m sure I’m not the only viewer to shout “GET IN YOU BEAUTY” when you got it it out. Top work, as always, RJ.

wow! thats awesome!

great work! success!

Eres super ingenioso, te felicito.

Great job!!! 😀

Nice work!

I salute your genius sir.

Good work

Nice tool

Very nice RJ! I like it!

wow! you are the Archimedes of bike repairing

Park Tools ain't got nothing on RJ........RJ makes the tool that makes the tool to do the job.

This geezer did a great job in making that extraction puller tool. If worried about the possibility of threads stripping, always use a finer threat to alleviate the risk. Great video, & safe methodology adopted here.

Haha, great! this tool is awesome! cool thinking. I have 3 steel bikes with aluminium seatpost, after seeing this video, i immediately checked if none of those where bonding, luckily not, used enough grease for now! cool video, thumbs up!

If you are worried about the galling on that washer replace it with a drilled piece of the steel tube. If you want the closest fit you sneak up to it with an adjustable mechanical reamer. Cool tool, reminds me of things I've made for various automotive work. On the technique I would first use your tool to push it in before trying to remove it. I have better luck with this technique on seized joints. It doesn't need to be much. I'll share with you the best of the best techniques I know of from a mechanical guy who could do anything. ( He welded a hand trike up for his paralyzed son. Coolest thing I ever saw as a kid! ) You heat the joint then pull it away and apply beeswax (toilet bowl gaskets are a cheap source) and it sucks it right in there and acts like a lubricant and its amazing how well it works on rust (our state uses salt so we become experts on this while working on our vehicles). If you ever do rebuild it consider using something like an air chisel to vibrate that joint out of there. They can handle things that it normally takes a full out machine shop type hydraulic press to remove. Last note: I wouldn't try pulling on that extension of the seat post for two reasons: A) It's the obvious weak spot because it does a 90 right there B) If you look closely you see a line down the middle of it which is proof that it is casted metal. While casted metal is very strong it is also very brittle and when brittle metal breaks it is often razor sharp. It's just not worth the risk to your own body by a sharp piece of metal alloy when a seat post is basically a cheap item. Also that seized dark spot is a likely place for tetanus to reside. I've been told by ER folk (when getting evaluated for getting a tetanus shot because I couldn't get them for other medical reasons) if the metal is fresh its rarely a risk but metal that has been sitting around for a long time in the rust is more likely to have it.

Very interesting build. You never gave up

Damn!! You ARE the dude!

I take my hat off to you sir with all these seat post challenges great work and funny message. All the best Andy

Omg this was so easy and simplistic

U are a genius man good job

Nice job on the seat post extraction tool! May wish to grease the threaded shaft to prevent galling and at the base of the nut/washer to reduce friction. A hardened grade 8 washer, or 2, will also make it easier to tighten. The In addition, once tension is applied to the shaft a few raps with a hammer may facilitate release of the stuck post. Where are you located I have a few stuck posts...?

Great video. Nice job on setpost

That’s excellent. I wish I could weld one up!

Another awesome vid

Great job RJ. Need a tool , make a tool

Nice job. Never underestimate a man with a spiral inclined plane...or a dremel tool. Keep the videos coming. And I wouldn't worry about the washer, just replace with each use.

This is genius!!

Freakin love this man!

Those knocking sounds are pretty satisfying.

So me and my dad got my seat post out and found out that someone had cut the seat post down to fit them on a xl frame. Which made it extremely hard to get out. With some cursing and swearing plus pb blaster and a blow torch we got it out. It literally had a 6 inch post and we were baffled at the bike I had gotten for free. I'm glad that we had a steel pipe that was the exact diameter of my seat post because when we went to use a port a power the seat mount that was apparently glued in with some sort of glue popped out and we popped the part into the new steel pipe. Thank you for your videos and support on how to and diy repairs!

use a thrust bearing under the washer. That will help reduce the friction when tightening

That's a brilliant idea. I'm happy you mentioned the plan for a handle because I was really concerned the threaded rod would snap while your fingers were less than an inch away.

Excellent video, a true inspiration. I think you could either aluminum braze or tig weld an aluminum plug into that hole, and reuse that post.

Maybe weld a washer to the coupler... I think it will be better than replacing it with a larger nut.

Surprised me a bit... Even after the initial pop... and it broke loose... it still wasn't giving up easy...

I think this would work with some type of clamp surrounding the post. And in the front steel fork as well for pulling a stuck quill also. Just in case you want to save the part like in some classic old steel bikes. Brilliant design I must say, RJ.

I like the idea. You are doing great job :)

Congratulations! This is the tool for for the job! I spent days fiddling with spanners, blowtorches and hammers to extract one seized seatpost. I would have been quicker building that tool and removing the seatpost even if it was just for one time. By the way you could put a flat ball bearing under top nut to reduce draging

This was so damn satisfying to watch

Interesting build.... I would definitely watch using it on aluminum frames

The absolute in seat post removal technolgy!

That's a really good tool you invented there.maybe you can make a patent and get it into a set and sell em to bike store's

Nice looking retro bike, I have a similar looking M.B.K. frame with low rear brake.

Wow it's really hard to imagine just how tight the thing is

Nice tool, pattern it.

It's nice

for frozen parts I starting using the tapping like tapping the jar lid idea and that might help.

Awesome idea! As for the last part, any time I've tried applying force to the head of the seatpost, it just pops the head off. I'd stick to drilling the post itself.

Nice homemade tool. Also like they way you hand chop when you speak and surprised that you got shoes on. Thank you and have a great day.

This a really cool tool you made, a high lift jack works the same way just invert the frame in a pro park professional bike stand and reverse the jack rathchet cranking it down while standing on the heavy steel plate.WD40 RUST REMOVAL is what i use to eat thru the corrosion.

Victory 👍🏼

Great job!! I cheated when I needed to get a post out. I made a solution of lye. It worked really well. I protected the paint by using rubber corks on all the frame tubes (inside and out), taped a home made funnel to the seatpost opening, then covered the entire frame with plastic drop sheeting, kept a loaded garden hose at my side.

I dont understand english very well, but I learned a lot just by looking, you are a genius👍

I have made a lot of special pullers and I found that if you use a full cage roller bearing (a small rear axle outer bearing for a rear wheel drive car) it's much easier to turn the nut. Yes also put a extension in the top square stock for safety if anything breaks on the clamping assembly you don't want your hands down there.. 🤗

"I usually drive a bus". Nice one. I thought my eyes were playing tricks on me.

Nicely done! The weakest link is the threaded rod and nut. I would use a high tensile, and if you wanna go to town with it - a thrust bearing under the nut.

Very impressive construction rj, i would try a axial bearing instead of the washer, and i would grease the threads.