If it was just the quick link needing to be snapped in place, there is no need for a tool to do that. All it takes is a bump on the crank (w/quick link in top position)
Yes, agreed thatās what is should have taken. I couldnāt figure out how to pinch the quick link together while applying pressure via the crank at the same time.
Little too much wax on the link perhaps?
I remember this one 
Quite possibleā¦but most likely user error 
This, iāve done this several times. My brain just canāt work out which way the tire goes on. Iāve taken to marking them with pen now as a reminder.
I donāt know what it is with me, its either easy or nigh impossible 
The park tool quick link tool is one of the best cheap tools I have bought. Snaps them on and off so easily.
Last year, I put a drive train back on my fat bike, waxed the chain etc etc. I use it to pack into some hunting spots I like that are a couple miles in with no motor vehicles permitted. So I spent a couple hours the night prior getting my bike all sorted out. All stoked to get back and hunt an area I havenāt been in for a few years. Drive an hour and half to my spot, well before day light. Go to grab my bike off the bike rack, chain is dangling and no spare quick link to be had. Probably a half dozen spare ones laying on my work bench at home. Bought the park tool quick link pliers the next weekend.
Doesnāt really matter for road tyres. But for those that have a ādirectionā there will be an arrow on the sidewall
I donāt even know where to start. So letās start with most recent:
Snapped the lip on my freehub where the threads start as the cassette lockring was not fully threaded. I forced it and snapped the metal.
Didnāt size the chain properly on my F/S. While this didnāt result in anything damaging the video the bike shop mechanic sent me made the chain look like old saggy balls.
Put Shimano 11sp chain on backwards on my latest build. Went to the bike fitter and was wondering why my drivetrain was so loud.
Installed a Rekon Race tire backwards on front wheel (honestly didnāt really notice a differenceā¦maybe it was a bit slower)
Bought carbon Easton aero bars which I found out were for SRAM shifters. I found this out after it taking nearly 2hrs to shove the brake hoses and shifting cables through a single hole. The bars have holes on both sides of the hood mounting location so it is meant for SRAM hoods.
Stripped out a number of bolts.
Stripped the threads on my Rockshox fork where the thru-axle threads. I placed the thru-axle on a towel that had a bit of sand on it. I guess a piece of sand got stuck in the threads and when I threaded it to put the wheel back on it stripped. Fun.
I always seem to order a wrong part or two. For example, end caps for hubs, freehubs. Somehow I have managed to not f up ordering BB. Easy when I stick to English threaded for all my bikes.
Completely messed up my MTB saddle position this past summer, even though I have a mark on the rails denoting the correct position. I mounted the saddle from the side opposite the mark, never thinking to check the other side.
Cracked a carbon frame top tube in my workstand. The stand has a twisting lock on it and the top tube was oblongāone too many turns and CRACK. Thankfully, the local shop had another frame and he sold it to me at a reasonable price.
Over the years I always forget to check the derailleur hanger alignment before chasing poor shifting performance. There have been several times where the fix was just to bend the hanger back.
Scratched the powder coat off a portion of my handlebars. I had put carbon paste on the handlebar before attaching the stem faceplate as one does. However, I tightened the faceplace moderately, realized the handlebars werenāt centered and decided to just rotate them and shimmy them over a bit rather than loosen the faceplace. The scratches are a nice reminder of my laziness. ha.
Shredded inner tubes when using a screwdriver as a tire lever when I was 13. Couldnāt figure out why I had a flat when installing the new tires. haha.
This was cathartic. I feel better now.
To quote my wife: āAt least you are not into cars.ā
Out of curiosity, after getting the shifter off th new bike, did you chuck the rest 
Letās just say I learned there are benefits to having more than 1 bike!
I still havenāt worked it out
I dismantled my ultegra chainset a while backā¦ now wondering whether it went back together correctly 
I think that wins
I did this a few weeks ago, too, on my Specialized Epic Expert.
Iām no mechanical idiot ā Iāve rebuilt engines (Mazda Wankel rotaries), framed houses, done electrical and plumbing work. The works.
I blame it on me moving quick and being distracted. A terrible combo. Anyway, I went out and rode on the thing and besides being super noisy, the chain got thrown into the spokes and broke two of them. Ended up having to get the wife to pick me up.
The trick to fork service is making sure you put the lowers back on in the correct orientationā¦at least I caught it before I put it back on the bikeš¤£
The bottle cage is on upside down. Iāve done this before too. 