I repair a Cello Crack part 1 of 2
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- เผยแพร่เมื่อ 1 ต.ค. 2024
- Watch Master Violin maker Olaf Grawert as he repairs a cello crack!
His goal is to make it look like the crack invisible... Like it had never been there in the first place.
Website:
www.olafgrawer...
Social:
/ olafgrawertviolinstudio
/ olafgrawertviolinstudi...
Olaf: "Nobody will see this ..."
Also Olaf: Literally puts it on the internet for everybody to see.
That was really interesting, thank you so much.
I will send this video to my cello teacher, her cello was cracked some time ago and maybe she is interested in how those cracks are handled.
Greetings from Germany.
Oh yes... minor details 😀
No One except for the entire internet will see this.
Grüße aus Australien
Hallo, wie geht's?
@@wolfgangamadeusmozart9082 Mir geht's gut Mozart. Ich glaubte dass du gestorben bist. Alles gut?
@@roberacevedo8232 Haha... Mozart war mein Lieblingskomponist
As an owner of a cheap Chinese cello, I loved that you said it was still worth spending extra time on the inside even though it wasn't an antique. 💖
Well I dont't know about you guys, but I'm horrified every time he opens up an instrument and you hear these cracking sounds... XD
Reminds me of shucking an oyster.
I believe it's mainly the glue itself making those noises thankfully. Maybe someone more knowledgeable will correct me, but as I understand it, hide glue kind of cristalises, so once you break it it all kind of shatters leaving the wood unaffected. Those old makers knew enough to make this a safe operation, provided the luthier is careful and knows his work of course. When you have tough modern glue it can be a lot more risky.
The body of the instrument makes the sound so much worse!
I have heard of clients fainting when they saw their priceless instrument opened up.
@@AskOlaftheViolinmaker I don't want to know how I would react to seeing my violin opened up😂😬 But knowing that you are a professional I really think these instruments are in good hands... 👍
It's all about trust. You need to trust your luthièr to repair your instrument. I trust Olaf to repair everything really😀
Can you also repair the cracks in my heart? ;-;
Haha... That's something only you can do...
Just be kind to lots of people 🥰
@@AskOlaftheViolinmaker i am kind but it is tiring :(
BTW I GOT VERY EXCITED TO THE FACT THAT U REPLIED THANK YOU FOR MAKING MA DAY❤❤
I haven't watched twoset in a long time. I been watching only Olaf and car stuff. I feel like I'm cheating on my spouse lol
I don’t play the cello, or really any string instrument, but this is educational and fun to watch anyways. Thanks~
It's never too late. In my 70th year, never having laid a finger on a bowed string instrument, I bought a 'cello! Replaced the pegs with machine pegs, put in a new sound post. Now all I have to do is learn to play. : - )
I "met" you through TwoSet, and this is so interesting, even for one who does NOT play an instrument. Keep these coming.
I love that Olaf doesn't care if you spent $500 or $500,000 on an instrument, he treats them all with the same respect, because he knows how much they mean to the owner.
I love the approach: "every instrument is special and precious to its player and its owner". that´s so true. thanks for taking care of every instrument with the same passion and attention.
I find the skateboard in the background an interesting addition to a room with fragile instruments laying on every surface
It's Chekhov's skateboard. Just wait for part two.
I noticed that too. Maybe it's how he goes to work in the morning.
Cadwaladr Doesnt he live there?
@@larryxiang822 He does, but he leaves and comes back just to imagine that he's commuting to work.
It's how I relax in the afternoon... we live on a fantastic hill with a smooth street that you can just carve up with the board.
4:40 BGM: Paganini violin concerto no.1 II Adagio. One of the greatest violin pieces! I personally recommend the Sarah Chang's one.
There ya go... nuthin to it. The owner could have done it himself, eh.
What's that... you want it to sound like a cello?
It's like watching a Bob Ross painting, but with Instrument Repairs...
Oh my god, you're a luthier and a whovian! I hope you do have time for the worldwide simultaneous rewatches of the episodes or enjoy them on your own :)
Hey just a small request can we get a close up of your finished cleats next time I'm always fascinated how each luthier finishes them differently
It's always satisfying to see how you work! I'm excited to see how it will turn out
(Love the Doctor Who reference btw)
I have used your technique here to repair a crack in the solid top of an archtop guitar. I really enjoy your instructions, very helpful. I can't even see the crack I once had.
Wait, what was that loose dowel rod just rolling around on the inside when he put the top plate on? Is that normal?
It's normal if leaving the soundpost there to not lose it. It is refitted later with a 'sound post setting tool' as it is normally done with any of the violin family of instruments.
I don't know much about string instruments, so how do cracks actually affect the instrument? does it affect the sound, or is it mainly a danger to the integrity of the wood? I'm assuming that cracks can grow if left unfixed, what's the worst thing that could happen in this case? Could the face plate split completely, or can cracks splinter into multiple cracks like glass and thus cause even more damage than one would expect?
as a cellist i’d love to see more cello repair/restoration videos
also nice dr who reference lol
The sound of the cello cracking could be a part of Brett’s lofi
Personal question... Do you watch Baumgartner restoration? Just curious because I wanna see how much of a 'small world' yt is
That's amazing! You're the string surgeon!
Why would anyone dislike this?!?! Please remove the dislike, it does not belong here
Thank you... you are too kind... Luckily there is free speech and there are way more likes!
Thanks for all the wonderful support
Once the back came off my cello because the glue gave out (left the cello in a cold room in winter overnight... Ah to be young and foolish again). That was traumatic I tell you. Thank you for healing our babies ❤️
How often do you have to make fresh hide glue and how long does it last (i mean does it remain viable for you to use heating and reheating it)
Have you ever ruined an instrument and had to pay for it?
Have you ever had a instrument that is too damage to repair?
I'm so glad I found your channel!
He doesn't actually have to make the glue, it comes in little dried pellets that you soak in water and heat up. But it is made from animal hides, so once it's hydrated, I don't imagine it stays fresh for very long.
@@Cadwaladr thank you!
Hi,
The glue lasts between 4 and 8 days.
I have had a violin after a car drove over it :(
And I have had little accidents that happened but then repaired... after 34 years that nearly never happens... touch wood...
Luckily I pretty much continuously touch wood 😃
10:58 - 11:20 "you could end up with a cut in the top plate" or your limbs... Unfortunately it's a bit late to show this to my brother because that's exactly what he did last Friday. He thought about protecting his fingers though, so when he slipped he hit the knife in his thumb instead. Badly 🤦♀️
Youch... hope he is ok.
I cut myself lots when I first started learning violinmaking
I don't even play an instrument (yet) but I love to watch Olaf's videos because they're so interesting and educational. Also very good to watch because they have kind of a calming vibe to it, if that makes sense? It's really nice when you wanna slow down a bit and just watch something, while still learning new things. Love your videos, Olaf, thanks for making them! Sending lots of positive energy and love from Brazil!
i honestly didnt know olaf had a YT but im happy he does and i think he deserves more subs
cello being the instrument I chose to play, is always the hardest instrument to watch being repaired. the worst I've done to a cello is trip over an endpin in the 6th-grade orchestra, the cello fell out of tune. My cello was tripped over a week prior to me tripping and the bridge was destroyed and the cello's top plate formed a dent. luckily it was covered by the school. moral of the story don't leave cellos on the ground with endpins out
Would you share what books are in your library near the window?
I love it when you talk about the timber and how it changes the sound. I wonder what a fruit wood or mahogany would sound like. I also pity the poor luthier who would try to make those.
For reference, fruit woods have to be very strong, else the tree would break every time it bore fruit, making it hard to cut and sand.
Mahogany produces a warm tone with deep overtones. It's not as resonant as spruce or maple.
Mahogany guitars have a wonderful sound.
Oh wow! T hat crack looks pronounced.
I bet gluing the top plate back on a Cello is a bit tricky since the mating bits are so much longer than on the violin. Do you do it a little bit at a time to make sure the glue doesn't gel before you get it all glued and clamped?
I guess hte chin rest is really big on a Cello, isn't it ~{:o)
Would there be a way to fix a smaller crack without taking off the top ?
Asking for a friend. . .
Any experiences -- will a cheap $500 Chinese cello allow a similar top plate removal or would they have used glues that holds things together too strongly?
I just blew on my phone to clear those wood shavings...
I didn't know you would actually remove the whole plate to fix a crack. Do you do that for every crack or are there certain criteria that have to be met before you go "yep the whole thing needs to get off for that one"?
Hey Olaf a quick question can you speak German ?
Hey Olaf why is he base bar closer to the left side of the instrument
Brilliant! I played the 'cello (rather badly!) for a few years but never got to see inside one. I'd heard of luthiers taking apart expensive instruments, but had no idea how. Imagine . . . "Good morning, I'm Casals. My Gofriller has developed a rattle and I'd be obliged if you could have it fixed by yesterday."
The glue that you use. Is that something you buy or make yourself? I think you have said that you make your own varnish
Do these reapir clots affect the sound of the instrument?
Behind you is a small round table - One day X violins with what looked like a portable AC unit, the next day V-y with a portable oil radiator - Love the content, who would have thought repairing violins and Chellos etc would be so entertaining, next year Great Guitar Build Off - Ha ha
This is endlessly fascinating to me. I would love to see us develop an alternative to hide glue that didn't come from animals.
I wonder if that spruce came from the Altai mountains? The Chinese are making good stuff these days.
Make some space in your workshop so you don't have to open the cello on the floor., 🙄
This video is actually "The Doctor Performs Cello Surgery" without getting attacked by Daleks (or maybe that's what part 2 will be?)
It was really interesting to watch! I've had a small crack in my cello that I was adviced not to do anything about unless it becomes worse - and now I see why - it's a lot of work!
Silly question- if you have to add a bit of heat to extend the open time of your hide glue while getting the crack aligned, might it not be better to heat from the inside, where you don’t have to worry quite as much about damaging the finish with the heat gun?
Always have control over your tool. I think there are many who would benefit from that advice.
Have you ever encountered an instrument that was beyond repair?
Damnit it thought the title of the video was, I repair a cello on crack.
I was really excited there for a second
Why do you use animal base glue, we have modern glue that is much strong and durable.
I hoped you would have been more precise on the cleats : first idea is the fiber should be perpendicular to the crack to be more solid. But on the contrary the cleats are wood and will retract more perpendicularly to the fiber, so, if their fiber is parallel to the crack, the lateral retraction will pull the crack close (if the cleat does not crack itself in this position). Which do you use ? Or 45° as I have seen on some repairs ?
I have a question. I read a blog where a woman repaired the top plate due to an impact on the sound post resulting in a crack in the top plate. She repaired it by putting an oval shaped plug in the top rather than what you did here. She had removed all the varnish to do this repair. Does this not seriously impact the sound quality of the cello now? The serious issue I have is she is equating her repair to that which could be used on a hardwood floor. I lost it at that point.
But am I the only one who is terrified when an instrument is opened? (considering that I myself busted the bottom of a cello a few years ago)
It is a pity the camera is more on Olaf than it is on the work. couldn't get a proper view most of the time.
Horrifying, yet fascinating to watch.
Could you let me know how much does it cost to fix the crack by opening the cello?
With stringed instruments usually constructed with bone glue, why not use a blow dryer to heat the seam to soften the glue?
Why is bass bar not exactly in the middle ?
In 8th grade my cello had a gaping hole in the side about the size of an ipad. Used it in a performance where I sat at the end of a row and everyone could see it.
Should have used cellotape.......
Why are you working on the ground?
i have a crack like this, I wonder how much it costs to repair
The Bob Ross of violins. 🎻
Best video yet. Thanks.
This video gave me anxiety
*reads the title*
😱😱😱😱😱
😭😭😭😭😭
No way! We were just watching Dr Who in music class!!!! What a coincidence
This guy is fun and cool.
I really enjoy your videos!
Thank you for sharing your craft with us. It‘s interesting and calming at the same time :-)
Hi, thanks again for the great video, you’re super entertaining and funny but also actually explain things really well and I feel like I always learn a lot from your videos.
I’d like to make a request: could you make a video where you speak German? Especially when it comes to musical terminology there’s a lot of differences to English I think so it would be super nice to hear you talk about it! Also it would be interesting to hear what your accent sounds like after (how many?) years in Australia :D thanks in advance!
What's going on with the dislodged dowel floating around the body of the instrument?
It is refitted after closing the instrument, as it is normally done.
*hardcore clamp*
So nice videos!!!
Am I sensing improved audio quality???
and video
When I remember to plug in the mic, it's much better 🙂
Thanks for letting me know
if you can crack open a cello slowly, you can crack open a cello quickly 😁
Quick question. Does it matter what kind of wood is used for the reinforcement cleats? And how far do you cut and sand them down? Flush? Thank you
I try to use the same type of wood as the area I'm repairing.
Hello Olaf, what is the point of heating the crack after glued and clamped ?
To keep the glue warm...
Olaf would I be able to talk to you about a broken cello? My daughter fell on her rented cello and I would appreciate some advice.
Hi Nancy,
How frustrating.
It would be best to email or use the contact form on my website.
You can email the details to mail@ my website including pictures.
I love your videos! They always put me in a good mood. Thank you😊
Where did you get those larger clamps? I can see how they can make the process go so much faster than using the single bar clamps.
... GEWA or Dictum. I also made 2 crack clamps myself
Didn't you leave a dowel in the instrument, why?
It's the soundpost, silly..
Am I the only one who finds 7:57 satisfying
I love a sharp saw :)
Thats a big violin
Master Olaf I have two cellos I will be restoring soon. Both cellos have the antique style gear machine tuners, should I swap them for standard pegs or should I leave them as is?
Also love that Paganini is playing in the background.
It just depends on the player. If the machine heads are original and the player likes them... keep them, but it a player is looking for more traditional pegs, changing them might be better.
You will have to fill some screw holes either with a tiny maple dowel or otherwise.
Why isn't the base bar in the middle?
Then it would be a middle bar 😆.
But seriously, the soundpost supports the treble sude and transfers the vibration to the back, and the bassbar supports the bass side and transfers the vibration to the top and the bottom of the top-plate.
Think about bridge as a hammer and top plate as a drum. Bass bar in the middle would not be very effective, it would neutralize the hammering action of the bridge. If you put bass bar on left side and bridge pushes down, the left part of top plate reinforced by bass bar resists and right part goes down and presses on soundpost and from soundpost to rear plate. F holes help the process.
So basically assymetrical bass bar design creates leveraged transmision of the bridge vibrations on both plates.
It is very sophisticated mechanical system.
What is the grain orientation on the cleat.
45° degrees
That way the cleats will expand and shrink similarly to the top, but still strengthen the area.
I would love to see what it looks like (close up) after it's all dried and (touched up). 😊❤️How do you touch up the seams where the top plate meets the body? Does opening it up inevitably make scratches on the sides? Is that necessary or does it naturally come off very clean?
Yes, opening an instrument will leave some cracks and marks in the varnish when it is glued up again. I retouch those and then polish around the join. Also the timber can splinter slightly, so it is really important to make sure I reglue those splinters and that the plates get reglued in exactly the same place they were before.
@@AskOlaftheViolinmaker Wow that sounds bad if it splinters in addiction to fixing a crack on the top plate. Better then than later i guess... I would love to lean the craft and learn how to make violins/cellos. :)
I’m very interested in musical instruments in that I’ve been building furniture with hide glue for decades. What is the loose dowl in the body cavity for? Thank you.
This is like watching ASMR tbh
Sometimes I'm a bit worried that TH-cam can indeed read minds :-D
About a month ago I had my first dabble at instrument repair, just for the fun of it and because I love to learn new stuff. A friend gave me a guitar that he'd "inherited" with his apartment, from someone who'd intended to turn it into a clock. It was never an expensive guitar, plywood back and spruce top, possibly from Eastern Germany (there's a faint stamp that I think reads "März 1974", which means it was most likely manufactured in a German-speaking country and the GDR was a welcome source of cheap but decent products back then. The finish was shot to bits (I have no idea how you can make it crack and lift off along the cracks like that!), the back is bashed in in two spots about the size of a 1-Euro coin each and it had become loose at the neck, making the neck move all over the place, especially since no one had ever bothered to take the strings off.
I did my best to glue the back on where it was supposed to go, even though the whole thing felt warped. On a luthier friend's recommendation I used Titebond Original. Since I obviously don't have any clamps designed for the task as a first-time DIYer I improvised with plenty of standard clamps and painter's tape. That repair feels pretty solid now but the top is slightly warped and it looks like the bridge is partly coming off as well so the string height isn't correct. I'll try to repair that and possible even the smashed bits. Not looking to make it perfect again but to learn and perhaps make it playable again!
So really enjoyed to watch a pro and see how it should be done!
I want to see a 10-hours video of you making a violin/cello from scratch. That would be super cool
That crack looked like it could have started at the saddle. Did you not feel it necessary to remove & relieve the saddle (from spruce side grain shrinkage to end grain of saddle not shrinking)?
Greatnpoint. I did actually do that, but didn't film at the time.
@@AskOlaftheViolinmaker That's great. It's always satisfying when a repair comes together well & even better when the client says "wow" on picking it up. :)
@@AskOlaftheViolinmaker I should add, I really appreciate seeing your videos & that you take the effort to share your experiences.
He’s listening to the Sauret cadenza from Paganini Concerto 1
I've seen some guitar luthiery videos. They seem to have a more robust approach to some things. But guitars are probably built more often with modern glues and stuff. I mean they had used epoxy and super glue when they deem it okay.
Very nice, very dedicated and very trad. Can't help think if Strad had had CA glue bitd, he would have used it and no cleats.
Oh my god, "I got to split the cello open". Please man, children could be watching. I was not ready for that and had to leave and come back. Man that takes balls to "split the cello open". And people say I am crazy. I will refer them to you.
Thank you, Olaf! I must check your channel for double bass work. I had a neck re-set from a supposedly reputable shop that I am not completely satisfied. Would like to see a proper re-set to determine if I am correct.
A really enjoyable video, thank you Olaf! Please keep them coming!!!