How to Grind Inside Corners - Welding & Furniture Making

[@djtheg6819]

Here's a better tip. Obviously the sides and outside corner are easy to shape and blend to be seamless. The inside corner is the hard part. When you use the flab disc, it doesn't give you a nice tight corner. When you are making stuff that is essentially decorative or non load bearing you don't NEED to weld the inside corner. If you solder that joint to just fill in where the seam meets then you can easily blend that seam with a file and get a nice super crisp 90 joint.

[@jeremyspecce]

Good tip, I’d like to learn to solder so I could do that. (I know how to sweat pipes and do electronic solder but not that type- I guess it would be silver solder?

[@leewelbanks6366]

I got so tired of changing cut off wheels, flap disc's , grinding disc's so now I have six angle grinders all with a different item in it, no more changing anything until I wear it out. Haven't tried one of those disc with the abrasive around the edges, will have to look into that. Anything I weld that's supposed to look really good I always Tig weld.

[@carbonunit6573]

Yes yes yes. I have at least 10 angle grinders with different options because it is easily the greatest waste of time changing out the disks. Also have about 50 air die grinders with different attachments because they are even worse trying to change out. The Walter 2 in 1 disks are brilliant

[@onemanswork9248]

you have just saved me hundreds of hours of work!!!! Thank you, I did not even know the curve flap disc existed.

[@impactodelsurenterprise2440]

So did u end up using it?

[@onemanswork9248]

@@impactodelsurenterprise2440 Yes I did.

[@impactodelsurenterprise2440]

How good is it?

[@CyrusAhmadiMoghadam]

Good tips. You referred to die grinder bits several times as dies, but they are actually called burrs. Hope that helps anyone who might be searching for them.

[@MakeEverything]

Yeah that was a brain fart!

[@Raul28153]

use a shop vac to control those nasty chips. If I am painting I use "Acme Weld Improver" It removes porosity flows into voids and makes the weld so much better. I think it's called Bondo.

[@griptopia]

This right here is one of the most requested things i get asked and filing in with practice is by far the best method. Specially when working with brass , stainless etc etc.. hiding the crimes.. lost count of how many times i see guys fabricating something that's going off to a polisher or secondary finishing and they are dressing welds with a massive disc.. die grinder , small sanding discs.. there should be no marks outside of 5 mm each side of that weld.. Filing in.. is the number one skill all fabricators should be taught. It's the thing i was shown before i was even allowed to pick up a welder. Great subject choice on this video.. not covered enough and i know you can file better than that :)

[@Kineth1]

I chuckled when you mentioned the extra cost of entry for the rounded flap disc. I just recently bought a second cordless drill so that i could save time switching between drilling pilot holes and driving screws. When you were setting up your grinder and talking about speeds i thought to myself "it's going to be quite a while before i decide to buy a second grinder, i haven't spent enough time switching discs for it to be worthwhile." Tool selection, and secondary tool selection really are a function of your time & effort vs tool cost. Even for home & amateur work; if you value your project time at $20/hour, after a total of 5 hours of tool changes (1hr/day over 5 days, 1/2hr/day over 10 days) it has cost you $100 to NOT spend the money on a second/specialty tool. I bought a cordless grinder to strip and repaint an old trailer, a rounded flap disc was probably the 3rd disc I bought. I could have gotten a wire wheel for my drill, but the time and frustration I saved by going directly to the right tools definitely compensated for the $$ I sunk into the tools.

[@olsonspeed]

Where were these twenty years ago, when I really needed them? Definitely an improvement over the file and sandpaper method. Thanks for the tip, I will definitely be buying a few of these.

[@motor2of7]

Great tips. I have that Milwaukee grinder but usually use an air die grinder, never thought to use the Milwaukee. Didn’t know they made grinding discs with a rounded edge.

[@passiton3801]

I used to work for a firm in the 70's that produced hospital trolleys from tubes. Our job was grind the welds down on the tubes (by hand) to look smooth, so they could be painted or chromed. Hard work, but we did it. Now the techniques would be very different.

[@SWFabrication.]

There are a couple of tools that you did not mention that are perfect for this application. Not sure if you knew about them but, a Dynafile electric belt sander and a Flat Head grinder. Both have been used for years and I have relied on both for this specifically. The belt sanders is quite handy as you can get the belts in 1/4" and 1/2" widths with a variety of grits as well as Scotch-Brite belts. Thought I'd throw them out there for yah to check out and anyone else interested. Great video, like watching your contents.

[@ReglazeRX]

Came here to find the dynafile comment. Nothing better than an 1/8th" trizac belt on stainless rails.

[@shuckarelli]

That table is sick!!

[@geoffhalstead1811]

Just ordered some curved flap discs, something I didn’t know existed, and perfect for cleaning up the welds on the inside of my 1935 Austin Seven’s A-post👍👏 Cone shaped carbide tool🤗

[@georgesanchez9971]

Love your welding table.

[@alanblyde8502]

I’d happy enough with that bench, that’s a pearler🇦🇺👌

[@liamellerby849]

Big fan and I have learned some great tips and tricks. I have always welded the weakest pulling joint first. Outside corner, sides in the direction of inside corner to outside, then Inside corner.

[@santina4839]

Once again, great information, thank you so much. I think you just gave me back hours of my life! I have been struggling to get my corners clean. I look forward to getting that curved disc.

[@adeh503]

That's an awesome welding table you have there my friend

[@erniehenshaw4161]

That air bevel tool you showed in another video would make a nice bevel before you weld those.

[@Eschelonistic]

The only reply I've read that made sense if you were to MIG weld it, bevel the inside edges, a quick seam you would not need to do any work on the weld.

[@Nomadboatbuilding]

Great tips. Arsenal now fortified with new options.

[@stickypaddle6432]

Makes me want to start my own youtube channel to show people how to "actually" weld and grind corners

[@tristanpatterson3843]

Yeah, fuck.

[@MakeEverything]

You should do that

[@akbychoice]

It’s been a week, how’s it coming along ?

[@christianmusso629]

This was a very much needed video as filing is very time consuming and tiring. Thanks for also giving the links to those tools used!

[@michaelcoccojr2513]

Nice job! I'm quite envious of your welding table!!

[@c10_steve61]

3/8” air belt sander from HF. Use good 3m belts and you’ll bet done even faster than that 2 min. Sander was $30. 👍

[@peger]

WOOW i never see this type of flap disc. And they even sell them in Poland . Nice .

[@clinte9897]

Thank you for taking time to make video. A lot of good info

[@Surmoka]

I've seen a (primarily) woodworker glue sandpaper around the head of a router bit, then put it into the router table. He removed the fence to make some space, then carefully moved the steel workpiece around the sanding router bit to grind the inside corner. He had multiple sizes of bits with multiple grits of paper on them for all sizes of corners.

[@EcoMouseChannel]

Speaking of knowing what tools are out there, most of us professionals would use a Dynafile/Dynabrade to get in tight corners, along with an orbital sander, working up through the grits and scotchbrite pads. But if the weld for sure isn't structural, but you only care about appearances... AND you know it will be painted or powder coated you can fill it with goo... If painting, use Bondo. If Powder Coating then use Lab Metal (metal powder filled so powder coating electrostaticly sticks to it)

[@MakeEverything]

I was going to show the dynafile actually, but most small shops and people starting out dont have the air compressor power to run one effectively. Ive got another project coming up that needs perfect painted corners so ill save it for then!

[@EcoMouseChannel]

@@MakeEverything These exist though... www.harborfreight.com/53-amp-12-in-bandfile-belt-sander-62863.html All the way up to the brand names you know and love. Including Dynafile II coming in at a hefty $320 Perhaps that would be a great tutorial... working with the HF version, compare that to a high end one and note the ease of use between the two.

[@davidevans1128]

Goid teaching and thank you. Many of us just tinker on things, lil pcs of yard art or car/ truck stuff. I made some A Pillar iff road light mounts, and had triangulated inside ..corner's 😢 Not being a welder and not gaving the proper tools, turned a 6 hr orihect into almost 30 hrs...lol. i need a Die Grinder w good attatchments! I'm still not happy with em..but they will do. I need to practice and get more instruction. Most of us aren't gonna live long enough for trial and error learning...lol😅😅😅

[@dan.w.hoover2556]

Super helpful - thanks!

[@NikeaTiber]

Thought it basically goes without saying to wear eye protection when using a powered grinder I also wear a face shield when using any carbide burrs (rotary files). As you mentioned the shavings that they create are really sharp, and in my case seem to have the ability to bypass my safety glasses with alarming frequency. Those will ruin your eyeballs really quick.

[@stevehall8227]

How about a video on a 3 corner joint, like where a table leg meets the lower frame.

[@sailingyemaya9781]

Bondo makes my welds real pretty

[@turdcurd6063]

FYI files only cut in 1 direction, the push stroke. Filing on the back stroke just dulls and damages the file.

[@carbonunit6573]

Ha ha. Never knew that. And I use my files a lot. Makes sense. Thanks.

[@souffianeyasser]

Unless it is a bastard file.

[@turdcurd6063]

@@souffianeyasser Well they are bastards.

[@carbonunit6573]

Been practicing my pushing without the pulling and the wife doesn’t think it works

[@Pushpin06]

@@carbonunit6573 have you tried lifting it up on the back stroke? ( ͡° ͜ʖ ͡°)

[@roytrudgian4786]

As in most things, unless one has time. Time is money, made or lost. It's up to the individual. 👍🇦🇺

[@tonymonastiere8510]

Nice layout with the shop. What many items, i could turn out there...ENDLESS!!!

[@MakeEverything]

I love it! Ive been working for years to build up the shop and its near perfect, but itll never be 100%! always strive for more!

[@KUGW]

I like your channel its always informative, that's why I started making videos. Its channels like this that make stuff interesting..

[@MakeEverything]

Thank you!! I appreciate that very much!

[@lebohangtsele2024]

Really helpful. Thank you very much!!!

[@KevinKimmich44024]

really useful info about the curved flap disks. I did not know that they existed.

[@timberwrightsvs480]

We're not all master welders, so I want to thank you for producing a video that will greatly enhance a novice's ability to have something come out decent. Although quite a few of them lead to items that aren't available, I also want to thank you for the links. When it comes to the flap discs with the rounded edge, the Pferd 67192 discs, I noticed that they have a 7/8" arbor hole. I also noticed that the ones used in the video are red, not blue, so I'm wondering if the link is accurate? If it is accurate, would you please specify which grinder you used these discs with. I intend on using the carbide burr and the rounded abrasive disc methods to shape my novice flux-core MIG (inside corner) welds, so your words are very greatly appreciated.

[@davidbrooks960]

Use a gas welding unit

[@timberwrightsvs480]

@@davidbrooks960 Would you mind elaborating on what you mean by "...a gas welding unit"?

[@peterlafayette5595]

Excellent video

[@noneck3099]

I use a standard ( not ultra thin ) cutting disc...for fine grinding

[@janeblogs324]

You welded all those in a terrible weld sequence, you will get maximum pull/distortion that way. Go outside, flats, then inside

[@menoname3594]

I'd like to see a similar video for steel angle rather than SHS/RHS.

[@alonsonavarro2126]

1/16" thick cutting disc works like a sharp grinding disc. Works if you have a steady hand and know how to handle a grinder.

[@michaellukaniuk5074]

You are a natural educator......subscribed

[@aigretbenoit]

Yeah those curve discs are a gamechanger. Been using them for a year now and couldn't go without them now. You should try some 3M cubitron fiber discs for the flat parts. There is no comparison in grinding speed and finish. 2 swipes with a fresh disc leave perfect flat grind. I prefer 60+ grit as i always blend with 80 grit on a random orbital to smooth out all the corners.

[@1992jamo]

1000% agree with statment about 3M cubitron fibre discs. They are awesome.

[@protect.your.digits.creations]

Holy Crap , I the the first responder .... Hey Chris EXCELLANT video for the first timer and the seasoned Pro. I learned a lot . Stay well your family and you my friend 🤜🤛🙏

[@photopc]

I Tig weld inside cornet joints.. much neater less finishing required and a softer filler...

[@stansenter2660]

That's nice, but are you good enough with the Mig or Stick? Now you'll need these tips he's giving us.

[@Mitalayeka]

Thanks Chris, this has been helpful.

[@sween187]

From the snap shot on the video, I first thought it was going to be about rocket stoves, but now I have to get some of them discs .

[@josephka5149]

When things were at their very worst: 2 Suns, Cross in the sky, 2 comets will collide = don`t be afraid - repent, accept Lord`s Hand of Mercy. The first sign - the Earth will spin faster. The second sign concerns the sun, which will loom larger, brighter and begin to spin. Scientists will say it was a global illusion. Beaware - Jesus will never walk in flesh again. After WW3 - rise of the “ man of peace“ from the East = Antichrist - the most powerful, popular, charismatic and influential leader of all time. Many miracles will be attributed to him. He will imitate Jesus in every conceivable way. Don`t trust „pope“ Francis = the False Prophet - will seem to rise from the dead - will unite all Christian Churches and all Religions as one. One World Religion = the seat of the Antichrist. Benedict XVI is the last true pope - will be accused of a crime of which he is totally innocent. - banking collapse was deliberately masterminded by the Antichrist - Antichrist will step in and create a false peace in the state of Israel by joining them with palestine in an unlikely alliance. - „He will recite extracts from My Teachings, which he will passionately proclaim from every secular stage in the world, until people sit up and take notice of him.“ The Book of Truth mdmlastprophet.com/the-schism-in-my-church-will-be-broken-into-different-stages/ mdmlastprophet.com/the-time-for-the-comet-to-appear-of-which-i-spoke-when-people-will-believe-that-there-are-two-suns-is-close/

[@frankthespank]

“Grinder and paint makes me the welder I ain’t.” 😎

[@frankthespank]

@AJ XOXO To further cover up my bad/ugly welding, lol

[@frankschwartz7405]

OR, you could use a "matured" hard grinding wheel with the circumference profile rounded from use. Should go right into those corners.

[@andrewoperacz7427]

Such killer discs.

[@mathewjacob8622]

They are from pferd

[@anthonymarino4260]

nice ideas thanks

[@bobdelaplage690]

Great my friend!

[@carolinekable7095]

THANK YOU

[@rustydodge6167]

Square and rectangle tubing not really a problem for inside corner welding. Demonstrate some angle iron inside corner grinding please. Personally I use a die grinder on the inside corners of angle iron. Would like to see your method. Thanks

[@sethpremo880]

Grind of the mill scale and if you don’t grind off the tube stock seam, at least match up the seams. And try not to weld inside corners at all. Usually overkill

[@dukesdad1]

Very good info!

[@thebob3712]

Just do a vertical down, get a smooth and concave weld and don't have to grind it

[@nikohamalainen6790]

Makers know...😉

[@PetesShopMakes]

What about using one of those 1/2 inch wide pneumatic or electric belt sander/grinder? I would think that you'd be able to get right up next to the adjoining section and grind down the weld without cutting into it just as easily but I don't know if you've ever used one of those for something like this and if it works as well as I'm guessing or not. I haven't tried it myself but it seems like it should be another decent tool for quick material removal that can work in that 90-degree plane which is the main goal here.

[@MakeEverything]

I also use one of those little belt sanders, they work great, but I wanted to keep this super simple and lot of people dont have enough air compressor volume to run them for long periods of time. The electric ones are alright too, but they run so much slower they aren't as efficient. Maybe ill do a whole separate video showing them

[@PetesShopMakes]

@@MakeEverything Oh, ok. That makes sense then. It is kind of a specialty tool I suppose so I get why you wouldn't mention it here. Just was curious that's all. Thanks for the follow-up and for another solid video. Keep em' coming.

[@bradthayer6782]

Good tip.

[@OFallons]

FYI: Just an observation; you really should not back pull and drag your file as it will dull your file teeth.

[@elementalmetal1745]

Watching him was like nails on a chalkboard hahahah

[@SWhite-hp5xq]

Guarantee most people do... or should I say look like they do. Yet no one can tell how much pressure he’s applying on either stroke. If you had a $200 file then maybe you’d be inclined to lift off at the end of a file stroke. He did say that someone gave it to him, so it’s not something he’d use often and I’m sure he’d get a good life time out of it anyway. Don’t forgot it is tempered steel against soft mild steel when all’s said and done. It’ll take a while to dull the file, and then it’s paid for itself and you can go buy another one. A $20 file will pay itself off pretty quickly, and then you’ve also got a great excuse to go buy more tools ;)

[@jamesgates7190]

kzbin.info/www/bejne/rpPcnJyZYpKGgaM

[@RoyMeraki]

@@jamesgates7190 haha i was thinking the exact same thing :D

[@domdogg123]

kzbin.info/www/bejne/rpPcnJyZYpKGgaM

[@p.s8950]

I'm going out today to grab some curved flap disc, I never heard of them before. Thanks for this vid. BTW I'd be pretty happy with your inside weld as is. LoL

[@billoffutt1138]

What the actual brand of the Curved Flap Disk and where can I buy it? Not listed in the video.

[@MakeEverything]

It’s the pferd abrasives , polifan curve disc it’s listed in the description

[@nateand3]

Thanx man I've never seen these

[@zachhoyt92]

I use a dynafile or air file choose your grit and go!

[@PetesShopMakes]

A grinder and paint make me the welder I ain't.

[@MakeEverything]

I strive to be the worlds OKayest welder, but the worlds greatest grinder.

[@PetesShopMakes]

@@MakeEverything Haha! Well...If you're not great at one, you better be great at the other.

[@InformatrIIcks]

If you want to grind the inside corner, be sure to bevel the edge before. Corner weld tend to not penetrate as much, and if you grind it afterwards you're going to end up with no structural integrity

[@dc85337]

You did the inside corner welds - but you didn't do the inside corner weld on angle iron. They have inside corners that "flat" grinders can't get into.

[@Charles-tj8ol]

@Make Everything I appreciate you sharing your insights. I’m a welder and have been thinking about making some table bases to sell for live edge slab furniture. I know it varies but could you share what kind of price you typically might place on some semi elaborate designs? Thx in advance

[@wellyforpm]

fuse your inside corners with a tig welder and you won't have to grind them. Problem solved. works for the outside corners too. and use a flat sanding disc to take down the flat sides, flap discs are curved and give you a far bigger chance of digging in and not leaving a flat surface.

[@firetom911]

Thanks for the tips, try to find those curved flap disks here in Vienna /Austria 🇦🇹. Nice shop Btw.. 👌Stay safe 👍

[@simplyadvancedworkshop1982]

I never knew curved flap discs existed. That'll definitely speed things up in my shop especially welding with a 240v harbor freight welder lol. Unfortunately I don't have a variable speed grinder but anything will beat a file and elbow grease!

[@MakeEverything]

Give them a try they are awesome!

[@jimpritz4169]

Great tips especially the round nose disc. The carbide cutters are really fast but I hate all those little needles that usually end up everywhere. Are you a native NY'r? I grew up in a little town called Snitaria Springs near Binghamton, NY. Enjoy your channel. Thank you.

[@MakeEverything]

I hate those little carbide burr splinters!!! Yeah I’m in Nassau county, born and raised!

[@jpbsv]

You missed the best option. Use a finger sander. Different grade belts available. Very controllable.

[@thegeneral7484]

What about the inside corners on angle steel?

[@passiton3801]

I have never seen wrap around flap discs, only the flat ones.

[@SAB445]

What about grinding corners in tight spaces, let's say between profiles that are spaced 6cm appart for example? Tips and tricks for that please.

[@gortsoppie]

There are none. Best not to weld in there in the first place. Or hide it and carry on with your life.

[@thomasstott527]

I just use a cut off wheel to cut down the weld... and shape... you can get a much more square look ... and the other methods give you a more half round look... but I do have a question... who makes that table you were welding on?

[@ChevyARt15]

Strong Hand Buildpro Welding Table Link up top.

[@dillanbates8646]

Hopefully I get a response, lol but okay so I’m making a aquarium stand and need like exact 90 degree angles so that the tank can sit in the 90 degree snug, if I skip this inner weld, and weld the other 3 sides, and add some braces underneath the length of the square tubing, would i be good to go? I’m using 1.5” square tubing 11guage

[@Max-kw4px]

I noticed in your videos you use both a cordless as well as corded milwaukee angle grinders. For cleaning metal, which variable speed angle grinder do you think is best - corded or cordless??

[@MakeEverything]

I recommend a slower speed angle grinder for cleaning metal. I like the Milwaukee corded variable speed grinder. It’s got great power even at low speed

[@moejr14]

What is a good pad to remove mill scale?

[@christianmusso629]

There are silicon carbide discs made by pferd 😉

[@Poksutin]

i ordered those Pferd Victograin Grinding discs...gonna see if their any good :)

[@MakeEverything]

They are insanely fast at removing material! Just remember you dont need to press hard with them. They are a low pressure disc, let the abrasive work its magic, you won't be disappointed!

[@Poksutin]

@@MakeEverything hope so.. i hate grinding welds flat :D

[@WV591]

Wow look at that awesome welding table. must've cost at least 59.99 out the door from harbor freight :-)

[@robinpetersson3081]

What about a corner with a third side?

[@cedarhatt5991]

Welp, that's where Dremel shines, myriad tiny burrs discs balls cones cylinders sand paper cylinders on and on. Also mini air die grinders all their accoutrements.

[@chrishouse5753]

Maybe you mention it, haven't finished the video yet... what about a nice bevel on that inside corner first? Then when you a laying your weld ithere is a place for most of the weld material to go resulting in much less weld to grind down and eliminate.

[@jigtenmetalart79]

U guys r totally doing wrong🥹🥹

[@amanwithouthope9475]

Wow great tip! Definitely gonna pick up a box of those faired flap discs, are they on amazon?

[@dwwoodbuilds]

Look at the video description. He provides links to the products.

[@francisarledge9981]

Where did ya get that welding table?

[@KTX666]

grinders and paint, make the welder you aint ;-)

[@CarterBuilds]

File on a variable speed saw all works a whole lot quicker

[@ashc5728]

Is that disc you propferd method?

[@francisarledge9981]

What brand is that disc? 🤔

[@jimmax8018]

Are these corner welds or fillet welds?

[@douglaspost5097]

Wouldn't removing so much weld cause the corner to be weaker? It seems like the inside welds would then be paper thin. I realise that the outside welds will hold some too but if you're going to remove that much weld, why not just use some epoxy or JB Weld or something to just fill the seam?

[@wellyforpm]

It's for decorative pieces, not something that you would be putting a lot of wieght on or depending on to hold a lot of weight. your strength is going to come from bevelling your flat sides and welding them

[@corymcgrath5652]

Welder here: Understand four basics. Preparation, heat input, manipulation of welding processes required for the base material. Good welders have files not grinders.

[@fotiss8883]

How do you like that Milwaukee M12 die grinder? I have seen reviews of people saying the grinder just died on them a few months after they bought it. Great video by the way

[@MakeEverything]

Interesting, mines been great! Their tools are warranties for 5 years so even if it dies you’ll get it replaced easy!

[@fotiss8883]

@@MakeEverything 5 years?? I didn't know that! That's great! Thanks for getting back to me and for the very informative video!

[@marktwain..1972]

Video starts at 7:10