This is a brilliant repair for cast iron! As an automotive parts guy, I will remember this as an alternative to replacing a cracked engine block.

Thanks for not ruining the videos with background music! Well done.

These videos will never benefit my life but I can't stop watching... ?

Why is there no real machinists like this in my area. This guy is the real deal!!!! I watched other amazing videos he has done. Very professional!!! I have a very rare 512 casting big block Chevy Copo engine that needs some head bolts done. Wish I could send it to you.

Watching these videos makes me wish I had some cast iron piece with a big crack in it, just so I could have an excuse to repair it with this kit. Feels good to watch. Please make more.

This is one of the most beautiful things I've ever seen. Been a welder and mechanic for 30 years and I've never seen lock n stitch. I will definitely be using this in the future

You are the Bob Ross of machining (or whatever this is)

I was amazed to see you use a right angle drill jig but not a tap block. Still an awesome product, I can’t believe I’ve never heard of this before today

I have had great success using a similar system called Metalock in the UK. We have a lot of 'craftsmen' who crack cast iron pump cases by not blowing fluid out blind holes, then the hydraulic pressure caused by screwing in a stud or bolt cracks the casting or blows the bottom out of blind holes. Your system for blind hole repair is the most elegant I have seen though.

This is excellent, I have seen a few methods of trying to stop a crack growing but this is the most professional method I have come across. I love the tie bars to hold the crack together.

I feel this is covered in the “machinery’s handbook” such lost arts . So much knowledge these men have .

you got guys that just replace parts. Then you have these guys that make you cracked surface look just as good as new . Top notch work 👍.

At the power station we had some large water pump casings metal stitched. It's not a new technology but it works really well and today's anaerobic adhesives will make it even better. Thanks for the video.

The forward and back in tapping is to break the chips so you don’t break your tap. You can never go wrong doing it that way.

I feel like nothing ever goes wrong for this guy

This is the greatest video I've ever seen. I work on aircraft and have used taps, easy outs & drills for 30 years, and the drill jigs we use are a lot like the ones used here.

Nice video. Type of skill that 99.9% of the people in this country don’t have unfortunately.

this is the best instructional video ever made.

I Just simply didn't know such a tools existed for this kind of repairs, wow!

Had a machine shop in Denver do this to a Mack engine block about 15 years ago, What an awesome repair.

WOW, What an elegant designed repair. Just beautiful!

I presume this is an old video but still relevant today. Loved it 💯👍

I didn't expect that, absolutely amazing to watch this engineering solution

I can watch these videos all day long

Craftsmanship at the highest level. Thanks for sharing.

Thanks Lock-n-stitch! Your my go to guys for all thread repair needs and more.Great work !

Iam very happy to see these type of engering work nice work and very nice way to present the vedio without music and other things

This is an amazing process! So clever! I always wondered how you properly repaired cast iron.

I have no cracked items to repair, but this is very satisfying to watch. I wonder how the strength/permanence of this repair compares with brazing the crack with silicon bronze.

I love these old documentaries

I will never use Araldite to do this ever again. But seriously, very clever engineering and superbly filmed and explained.

Wow just wow that is the coolest way I have ever seen to fix a crack like that. I assume it's too risky to weld in that situation, thanks for the video.

This makes me seriously want to find some gigantic old-school V12 engine just to repair it... Anybody got a broken Packard, Liberty or Merlin laying around? Subbed.

Well, I used to think that drilling and tapping to the next size up was an adequate repair. And I also never considered blind holes to be necessary for low pressure systems that a little dab of silcon can contain. I have always been, and will always be, willing to bring my customers up close and personal with my work, to let them fully understand what the job at hand is. I have often turned down thread repair jobs on major components like blocks and heads, simply because I was ignorant of a repair procedure that I could confidently warranty. This knowledge will be shared with my customers, and even with it I will still decline these types of repairs until I'm able to perform them with the proper tools and practice. I will still continue to use the tried and tested larger bolt for lesser repairs though. your alternators doesn't care if the mounting bolt is 7/16" or 9/16" threads. Only that it's held on.

Stitching repairs have been done on cast materials for a long time some repairs have already held up for over a century. Welding a very porous material such as cast iron leaves weak points on both sides of the weld.

Should reupload this as a single video. Educational so i don't think there is a 5-6 minute limit per video in that case.

A guide block for the tap is imperative. An insert even slightly out of square can lead to the insert being ripped out. All the pull would be initially on one side. Kinda like you can rip a book if you start from the edge but not all at once. Also the fastener can snap prematurely. Same goes for Heili Coil and Keenserts. For Heli Coils repair it’s important for the end to be below the top one lead turn and the tang broken off with a flat bottom punch that just fits the minor ID. Failure to do this can lead the coil peeling out. The Keensert installation must use the tap drill size recommended by Keensert not the normal tap size drill. The proper install tool must be used to drive the pins down. Re tap the Keensert after the installation because they sometimes close down.

Hi, one suggestion is to use the alignment jig when tapping the hole with the first (roughing) tap.

This looks like a lot of work, but you certainly have an excellent repair.

I just have an issue with a aluminium engine, the bolt just eat up all the tread in the engine, and you gave me the idea to drill the engine block un order to set a new tread so i can again use that bolt.

AS FOR TAPS I NEVER KNEW THAT THERE WERE DIFFERENT TYPES (WELL) WHAT I MEAN IS ROUGHING AND FINAL WHICH I FOUND INTERESTING IN THIS PRESENTATION

Great video, you kept it simple and to the point. I have 2 flathead ford blocks that i will try this system on soon.

Wow what a great product. Makes me wish I had some cracked cast iron blocks to repair.

This is engineering porn.

We had ahead on one of our tractors crack took it to a guy a machiest for the railroad for 60 yrs he was in his 80s he did same type of repair no problems after at at all

Ohh how many holes have I not taped manual like that 😂 brings back memory

Super neat to watch.

never seen this before thank you for doing this

Your system is just what I need!!! I just bought a milling machine that was broken almost in two. I think with your whole setup I can fix it. It has about a six inch crack on each side with a quarter twenty hole on each involved. I sure hope that you can help. Contact me please. Thanks a lot .

I use this product and the it works great......Greg from WV

Super fix

Very very interesting indeed.! a lot of skill and a very satisfying result.! not my domain but enjoyed watching ! Can you do the same on ALUMINUM ALLOY BLOCK.?

Perfect!

This video is the first time i heard an electric drill referred to as "a magnetic based drill "

thats Bad ass , I watched this 4 times already lol

Great video

This man is very very cool

I USE THIS SKIP TOOTH TAP FOR CLEANING THE HEAD BOLT THREADS ON A SMALL BLOCK CHEVY IT'S VERY EXPEDIENT AND REAL QUICK IN COMPARISON TO A STD TAP

That is some pretty slick shit! I'm impressed!!

I love these videos. Well done and great product

Impressive method

yes i reckon you that job stitched up.

Very slick system. Thank you very much.

Fascinating :o) I do like a good insert, one that you can torque up on. (No helicoils)

I really enjoyed watching this video. Very interesting I need the tools were can you get them please

How are you getting your air coupler to spray air like that? Are they available with a spray button or something? It looks super convenient.

amazing series thank you

Just subbed, great series here. Nice repair!

Excellent!!!!!

Well done learned a lot

Beautiful.

I watched the whole video series and kept asking myself "why don't they just weld it?" Then I realized it was cast iron. Pretty cool. Seems tedious but cool nonetheless

Absolutely Amazing!!

Who designed the tooling, such a clever idea. Anybody know what the casing was for and why it cracked in the first place?

Simply amazing!

I use 3 taps, THE FIRST TO OPEN THE SECOND TO DO IT THE THIRD TO FINISH

Very interesting. Thank you

Excellent work👌👌👌

Neat-o for the stitching technique. but never mind that. Where did i put my blow gun down!?

I HAVE AN INTERESTING TAP IN MY COLLECTIVE IT LOOK'S REALLY ODD AS IN IT'S MISSING EVERY OTHER CUTTER TOOTH THIS TAP IS A TREASURE SO I HAVE FOUND

Чувак переведи моё смс. Этот способ ввертыша ещё был придуман лет 30 назад у нас в России и до сих пор используется а вы только сейчас об этом говорите и показываете 😁🤦‍♂️

Would this type of repair work to repair a striped hole in a Harley case?

After the taping they haven`t cleaned out the taping fluid with acetone or brake cleaner and than they used thread locker what would not stick properly on the leftover taping fluid what cant be blamed. It is the purpose of taping fluid prevent sticking - or did I miss something ?

11 years? What the algorithm..

Cool airgun

Brilliant

BRILL AT MY AGE ABD IM STILL LEARNING

how difficult is it to do this type of tapping in a confined space where you would not have space to use a normal tapping device? any tricks?

Great videos

best perfect srongly repair

Nice vids, you need to upload more lol

Great skills

Excellent

wow nice work

Approximately how long did this repair take and how much did the parts and tooling cost?

Another great video would be the man making that casting, for it looks complicated.

truly amazing !! I would have screwed it up 2 videos ago ..

muy prolijo de lo mejor que vi

As a non-automotive person, where is the full length of film? I can watch that hours.

If only he wouldn't you JB weld would have fixed all of this within 5 minutes.