Cordless Makita Grinder rusted solid after being salvaged from a sunken boat. 

I guess most technician would just reject working on this, even waiting for it to dry. But it makes good content for a RU-vid channel 👍And indeed, best advertisement ever!

I have a small amount of Makita 18 v power tools, was thinking of selling them and putting the money towards Milwaukee 18v tools but after seeing this think I'll just keep adding to my Makita range. Top work 👍

Let’s hope marketing will never take over at Makita company like at Milwaukee. Repairability is the most important feature of any good tool. Not power and fancy advertising.

Unbelievable!! It just goes to show that a quality item in the hands of a first class engineer can be salvaged. Not just a brilliant ad for Makita, but also an example of your skill at repairing ANYTHING, regardless of the state it's in when it walks through your door!!

My Dad used to say... if you buy well, you buy once, if you buy cheap, you buy twice.

Just a friendly reminder for anyone else playing with heavily oxidized copper contacts: that greenish goo is both irritant and a wee bit toxic, so remember to wash your hands properly and avoid contact with your eyes, mouth or nose (or your wiener if you have to go pee, unless you fancy a burning sensations down there for the next couple of days).

Makes me glad I buy Makita tools.

There is no substitute for quality. Plus parts availability is a large factor. Plus having a man who knows what he is doing. Fantastic video Dean.

This is the exact reason why I've been a Makita customer for decades. Solid machines, a pleasure to use, fair price, and spares are easily available. I've hardly had any issues with them, and the ones I had were easily fixable or were being taken care of by customer service.

I've only used Makita for 40yrs

Not only advertises the Makita build quality, but also your skills and knowledge, hat's off you 😎Dean

A tribute to Makita and you.

Fantastic.Kudos to Makita quality.

And that's why you buy a quality tool that have sealed controllers and good confirmal coating on everything else, where possible.

Before drying out, a rinse with warm soapy water, and lastly with deionized water in ultra sonic cleaner if available. Rinse the switches and circuit boards, out with contact cleaner to neutralise any salt. Buff the motors, stator and magnets with wool wire or light sand paper to take away the suface corrosion then coat with any type of oil or rust inhibitor product. Even wipe with WD40 would help

and like you mentioned "Makita, Built to last" this is the reason i have gone back to Makita with my drills. eventually all my tools will be going to Makita. Tbh didn't think that grinder would work after the salt water, Amazing that its still working.

I'm just an experienced DIYer and have a few inexpensive tools that come in handy. On the other hand, when I need tools I can rely on, I choose Makita tools, most of the time Brushless, and every time I watch your videos, it reinforces my ideas. Indeed, I think that when you buy this kind of tool, repairability is more important than pure performance. Keep up the good work, friendship from the south of France. (and sorry for the probably approximate translation from the French language!)

Step #1 after salt water immersion is to rinse the hell out of it with warm fresh water, then finish off with deionized water in an ultrasonic cleaner if you got one. As soon as it came in the shop it would have been best to drop it into a bucket of tap water with dish soap to start sucking the salt out of it. I’m not sure how good the contact cleaner does with such high concentration of salt. It can deal with some ionic contamination but saltwater is best treated with fresh water first. Drying it out first is not the best with salt on it. Sure it has to be dried after the rinse of course. A big problem with salt and stranded wires is that they wick the saltwater into the wire. So that controller may well have been exposed to some salt wicked through the wires. But they could have been lucky. Sad for such a new machine. I’m mighty impressed that it still works, though. Even if it won’t last as long as a new machine, it’s still better than going direct to the dump.

Absolutely fantastic what more can you say.

I have to say Makita are the Best tools to have.

I think something like this repair every now and then is a good idea. I've learnt a lot about the corrosion that occurs, how parts can be swapped out and coatings on boards. Well done Dean!

Lovely..... but you sounded excited !! Great repair and indeed what a statement for Makita quality !!

Another great video Dean, happy I bought this makita grinder 😂

Awesome Makita 👌

That man is smart because he didn't put the battery in to test he sent it to the shop for repair

It deserves new bearings and more clean-up

Wow ... if I was the customer I would be extremely grateful !! Hope you got a drink out of it 😊

Makes me want get some Mikita now

Couldnt be happier What a fantastic result I have bought makita for years and the service is great One time the terminals broke on one side of my double lxt charger they replaced it just like that The worst thing that has ever happened is i drove my 5.5 tonne excavator over an impact driver on hard clay. It still worked until i took the battery out to charge and the casing fell apart without the battery to hold it together.

❤ Makita

I love this channel.. thanks for another video.

I have always preferred makita

Good "resurection"! Thanks for the looksee.

I think that salt will keep on corroding unless all the parts are soaked in several changes of pure water, cheers

Just incredible. Well done

You're a magician

I’ve saved a few power tools like this. Now that you know it works, replace the bearings, clean the machine parts in your parts washer and then soak them overnight in Evapo-Rust. It will be like a new unit!

Yet another excellent repair. Very well done

I would feel so chuffed if I had pulled off the miracle you did. Bet the customer was happy with the fix.

I will change my power tools to Makita. Currently I have a zoo of different brands but this was impressive.

She didn't sound too bad either. Great fix Dean.

Nice work .amazing result

Davy Jones' Grinder⚓ Very Impressive

The green substance that is produced by galvanic corrosion, especially in salt water, is copper hydroxide. When you get water into one of your battery operated electric devices rule number one is to remove all batteries as quickly as possible. This will remove the main source of galvanic corrosion. Of course, this is not on top of your priority list when you are onboard a sinking fishing boat. Rule number two is to open up the device in order to get out as much water as possible. If the water is salty you should rinse several times with pure water. To help the water out you can use compressed air and heating to a temperature that the device can tolerate.

Good work Dean!

An incredible salvage, and an incredible brand.

I mostly buy Dewalt and Milwaukee stuff, but I know Makita makes some of the toughest tools. It's crazy how fast salt water can eat through coper.

What can you say but......... WOW!

Wow, incredibile brand.

Impressive job anyhow. And nice to see that the only parts that needed replacing only did so because there easily replaceable. Had all the connections been potted they might've survived but then they'd be harder to replace it they were too fail

job well done❤

The grinder survives hopefully the occupants of the boat are ok.

Very nice 👌

That's impressive

👍👍 Good job!

Impressive! Good job.

Great job

Awesome, did you go back and change those bearings? Love the videos!

Well done

Brilliant, besides a Bosch sds and grinders, an old de Walt router and a Festool track saw, all my tools are Makita….planers, impacts, drills, sanders, router, nut gun, saws, torch etc and although not all perfect, very very good especially for the money. I will always buy Makita products.

Mighty Dean, best video in a while, helps that I like Makita anyways tho!! Cheers for all your content 👌

Super impressive work and tool - I went over to Makita a couple of years ago from Dewalt. No comparison- love the Makita stuff 👌🏻🍺🏴󠁧󠁢󠁷󠁬󠁳󠁿

Just out of curiosity here, would you be changing out the bearings since the machine is working again?

Hey Dean I've had pretty good luck doing a short soak/wash in 90% isopropyl alcohol then let air dry sucks alot of the moisture out of everything Love the videos cheers J. Hunt

Imagine if it was a milwacky with a non coated circuit board.

Pleased i bought a makita when my old grinder packed in fsntastic how that worked after been in salt water 👍👍

the legend says hilti would work underwater too=)))

That is amazing. You should put your business address on the end of your videos; when I've tools that want repaired, you'd pick up a customer.

Try throwing that thing in a dishwasher next time. I've done that hundreds of times with electrical - electronic components over the years. Once thoroughly dried they are safe to reassemble.

I couldn't tell, were those wires pre-tinned? If not, I'd be shocked if they don't start corroding over time. We have that problem with boat trailer lights that go in salt water. Once there is a nick/cut in the insulation, its only a matter of time before the entire line starts turning green. IF you are bored, you can try to polish those bearings. Something we do in salt water fishing reels, take out the bearing, take off the shields and run it at HIGH RPM and dunk it in acetone. Over and over until all the balls are polished and all the rust/grease is gone/smooth. Then repack and use again.

As a diver just an FYI, if you ever drop anything in salt water get it into fresh as soon as possible. You may save it otherwise just eats itself

there was obviously a battery on that when it had a bath as electrolisis has eaten the copper that had power on it but the field coils are fine

I prefer first to clean with the fresh water and then to let it dry.

Do you think the corrosion happed so quickly because there was a battery attached? Causing and electrolysis effect?

Shirley they had tools like these to build the pyramids

Just like timex. Takes the lickin' keeps on tickin.😊

What are you even talking about? Salt water(with vinegar) cleans them. kek Luv ur vids, dude. So amazed. Hello from Illinois, USA.

Why did fishermen need a grinder? Were the fish frozen already?

Ultrasonic cleaner very handy for stuff like this.

Ever tried soaking in vinegar to remove the corrosion? Works for me.

That short white cable on the switch with the blue crimp connectors didn't look very OEM. Was it?

What is the quality of the Makita G-series like? I believe they use a different battery and are aimed more at the DIY market.

Guessing that seawater around all of the components, mechanical and electrical would cause many more problems farther down the road. Do you use an UltraSound Bath to deep clean electricals? Maybe that would clean out all of the salts present in seawater.

While it was still wet, why did you didn't not rinse it off with fresh water to get rid of the salt. I thought that would be the obvious thing to do, before drying it out to do the repair, you couldn't do anymore damage than was already done, just my opinion 👍

I always thought copper was non corrosive. Surprised to see the copper wiring eaten away. I guess its the salt water.

with a tool like this that has had salt water immersion its a good idea to wash it out with deionised water and then dry out and repair the deposited salt in the windings will cause failure over time

What's the torque like on Makita grinders? I've got a cheap 240v Ryobi (I think) and when you press the switch it almost jumps out of your hand.

👍

Just you and I,...

The salt is still there, and a little moisture it will start again! Maybe 🤔. But Nice work man!

Did you lubricate the bearings?

Even keep swimming pool acid containers away from your garage or work place.😮 It's a problem when staying close to the sea coast also. I rather stay far away because I love my tools too much!!!😅

Wouldn't it have made more sense to clean it before the salt dried in all the nooks and crannies?

They should've washed the b'jaysus out of it with De-Ionised water as soon as they retrieved it.

Great video Dean. I recon most repair men would have binned that grinder.

I’m willing to bet that had you invested the time into the corroded leads you could very well have saved those as well… but not really worth it when you had a good used part at your disposal

"In next video we will be fixing a sunken boat". I'd give the owner of that tool the battery connector too, if he got the 3 year warranty and serial numbers will mismatch, he got a proof its just been fixed.

If it was mine i would just sell on ebay as not working and buy another.Most of your vids i would do the same.Most of these tools are not worth bothering with.The people who send these tools into you must be tighter than a Scotchman.🤔

That's a Jesus grinder. It came back from the dead.

Buy a new one