4 DIFFERENT WAYS TO WELD BOX SECTION CORNERS. SQUARE TUBE 90 

I really liked the way you didn’t drag it out but were very exact in the instructions.

Matt, I don't even own a welder...yet! I have binge watched the entire Mongrel series you have posted. Very happy to see your attention to detail. I watch videos because I love the craftsmanship and skill you have but to also learn welding techniques. I watch many RU-vid car restoration videos for the same reason. Your videos on the Mongrel build are easily some of the best real world examples to model welding techniques after, along with why you are doing what you do as part of the build decisions you make. With that thought in mind, I humbly request when you weld in your videos, can you please share your preference for setup of equipment you choose to use, perhaps in a quick overview of your choice of selecting for wire thickness, wire speed, the welder you are using, and perhaps the nozzle cup size and type of tip, along with machine settings for Amps, etc. Thank you.

I've seen videos on the rounded corner done by someone in India wearing sandals and stick welding with car batteries. They never explained the mathematics of the layout. Now I have to get some stock and practice. Thank you.

one of the most useful welding vids I've seen, thanks

I learnt to weld in the 70s and I haven't picked up welder for 30 years so it is great to see somebody go through old school lessons so well, you should run courses for your local tech, your CV is on RU-vid.

I just discovered your channel and I feel like I just found a pot of gold! There’s so much valuable information and great content. Keep it up! 🤘🏼

You're a professional genius, the most useful video I have seen. Especially when you are new to metal working. Thanks!

Sir. I thank you! This was extremely informive and detailed! Love how you didnt go in using a thousand clamps. Not sayin anything against clamps. But through simple steps in techinques on where to start with minimum tools. Amazing work.

Always good to learn from someone who obviously knows what they are doing. Thanks for sharing

Absolute beginner here. Nice clear vid mate. Thank you. 👍🏻👊🏻

Thank You for the lesson. Always good to see how the professionals do it.

Very interesting. Thanks. My Urchfab hoody is going on an adventure on Wednesday. I'm doing the Monte Carlo Rally Classique starting in Glasgow in a 1954 Daimler Conquest. My Urchfab hody will keep me warm as the heater is weak. ☺

It’s a thing of beauty to watch someone so good at their job.

Man I really appreciate this post its extremely helpful for making strong coner joints especially the rounded corner which is ideal for gocart frames ect. Great video. You are a highly skilled craftsman.

Watching you weld is mesmerising. Its so...... clean and how it should be done.

Great demonstration, clear, concise and easy to understand!

Nice thanks. I'm fairly new to welding / fabricating. I am about to fabricate a knock down stand for a woodworking drum sander I built. I will be using 25 mm x 25 mm tube. This video gave me some good hints. I do have a welding miter clamp and a chop saw, so hopefully fitting it up won't be too difficult. Now if only my welding technique were better....

Thanks so much bro from Tanzania I upgraded via your videos

Great video! No nonsense. I'm just learning to weld now and this was extremely helpful. Thanks!

I like how you do your videos and how you include grinding tips and show how to mark out with the 45degree square nice vid man

I just came across this video of yours, i liked the way you explain the details and how it happens. And you show how to do things the way it should be, and show how to do it right. I llove it and i learn from this. (I'm just still a newbee on welding and processes,) thanks for this video a learned a lot.

I enjoy your welding tech's. I been at this a long time and there are many ways to do it . Love learning new ideas. Some maybe small but still cool all the same. Keep these coming. You are a master at this. Great video.

Some great tips Matt. If you have a longer piece of box you can cut the roll around shape half way along so youd make your 90 without have to add the other bit on the end. Brilliant channel mate. 👍🏻

Thanks for taking the time to make this video man. Well Executed Techniques. You earned my Sub. The last Style is "Cope,Coping,Coped" and is the Stongest of them all since theres no Continuous joint and more surface area welded. Best used when High Strength and limited space are in the factors.

Always appreciate the tutorials, especially from an ace. Truely epic finishing quality

This is the most insightful tutorial I’ve seen. Thank you. You point out the not so obvious things that make a big difference.

Alas, now you understand the difference between a layman and a craftsman. 👍

Very informative with out hype now am going to have to singe watch all you. I am a 73 year old new welder. Your videos are like filling controlled edges in my brain. Thank you.

I don’t understand how people can give a dislike on video like that. Thanks for your time my friend. Great video. Always 👍🏻👍🏻👍🏻👍🏻

Hello from Perth Western Australia, that was awesome. I really enjoy watching how a real tradesman welds frames up. Keep up the good work.👍

Great video, Matt! On suggestion for improvement: instead of measuring the length of the 45° insert and the 90° bend line, I suggest calculating it. 45° insert: multiply tube width by sqrt(2) which is approximately 1.4 bend line: multiply tube with bei pi/2 which is approximately 1.57

Best tutorial on RU-vid! Thank you brotha!

Nice mate. Like how you said about tack positioning to avoid warping. So many welders I’ve seen make that mistake. Good work man

Hey Matt thank you for taking the time to make this video ... One way I found to make accurate measurements of odd shapes is a cloth tape measure like a dressmaker or Taylor uses ...when you have it you find all kinds of odd Applications that it works for Pete m

This is the guy who will teach you to weld no fancy perforated table's just a old school welder no bullshit .class mate👌

Very useful tutorial , I take this as a beggining test after knowing how to use the welder , tqvm 👍🏼👍🏼

I have never worked with steel, but now I am now a fabricator! Thanks for the awesome content!

Great video! Can't believe I never sorted out that tape measure upside down over a curve trick before! Thanks!

Thanks for the tips on how to make 4 ways to do a box corner section useful in hand rails and railings

why is this so satisfying to watch

i like the 45 and the rounded corner , looks great for industrial style furniture

You defo attended metalwork at school then matt . nice work fella

Superb tutorial. I got inspired by your tutorial that I am going to get a metal cutting mitre saw. I would not have done it any other way. Thanks for this great video!

Very nice workmanship!

Excellent! Great watching a pro. The best!

Great video as your always are. On mitre cutting with an angle grinder I tend to use a 9 inch grinder that way I can cut my mitre in one go. Good for people like me who are less skilled!

Such a great video for beginner welders

Great to see a professional doing such high quality work.

One trick I started several years ago to get exact measurements on round tubes, circles, corners,etc that is down and dirty is to use a clothes designer/ makers measures tape. They come in metric and US and you can rap them around tubes or angles to get exact measurements on the fly, they work great.

Thanks for the great tips! I've been getting out my welder and practicing more since watching your builds.

What a fantastic fabrication tutorial video - wow Matt that was absolutely brilliant.

Always interesting to watch Matt, looking forward to the next video.

I just love welding and this dude are all good at what they do with their hands

Perfect timing, will be doing exactly this on the weekend.

Great 90º tutorial, excellent beads, micro laser looks interesting as well, Cheers Urchfab, Great channel by the way. Thanks!

Amazing tips buddy, No wonder I keep messing up when I weld, thanks for sharing the knowledge!!!

Hey Matt just in time as i am going to build a decorative table and i could not work out how to make nice legs thank you

Had this video in my watch later list for last couple of months. That is some lovely craftsmanship god I miss being in the workshop

Excellent video. Thank you. The last one will be the strongest because you have 6 connecting sides instead of just 4.

Thanks for sharing. I learned a few things, Nice work.

My brother , thanks very much I was struggling with that 90 degree angle using a grinder.but your content is very informative and clear. Thanks a lot

Best examples and explanations I've seen

Damn. Just damn. That’s Montanan for great teaching.

G'day Kevin here from Australia. Thankyou for sharing man they are some great tips. ✌ Peace man

A strength test on each one would be interesting.

watching over and over from southern Nigeria, amazing precision

Thanks for the tips. I've just used it on making a rounded 45 with stainless just with a smaller diameter curve.

This is great..I want to make a gate for my garden tomariw and now learned it.thanks my teacher.im Iranian excuse me for write bad english.

Awesome work just what I was looking for

Great video bro and your welding and fabrication skills are top notch !

Amazing video. You make it look easy.

Excellent tutorial, thank you Matt, I'm hoping that these ideas will stick! :-)

Excellent video, and r3ally done well, thanks so much! Which one of these intersections is the strongest at the corner?

I was insanely frustrated trying to do a corner weld today. Just wasn’t working. This really helped though. Didn’t realize I needed to bevel the inside corners in order to get the weld ground down flat.

This is ideal timing, just about to start building a new bench in my workshop, literally just ordered the box section! Keep up the good work!

thanks for sharing your knowledge mate....great vid

Sir, I thank you for your brill vid. So good to see an expert - and to learn from them is a bonus.

Excellent tutorial

Brilliant video, massive help as I'm about to make up a frame from box section for a racing sim for my lad. Cheers 👍👍👍

Great video and advice thankyou. Keep up the great work and videos 👍

Thanks for the knowledge, brother! Subscribed.

Excellent video as always. Thanks Matt

Professional explanation and editing. Really useful, thanks for your time.

Great video, thanks for taking the time to share your knowledge. Work clean work is inspiring, welldone. I agree with Amy.

Great work as usual, I did a welding coarse at Hertford College in the 80s, they never explained very much. I haven't touched a welder since, but the way you have shown how to do it it all makes sense. I wished I continued, as it's a very handy skill to have with regards to car repairs, thanks for these videos.

Great video with great info, love the how to videos. Thanks for sharing Matt. Cheers

After the flap I usually sand the grind marks with a random orbital sander 80grit and its leaves it flawless

Great video man! Can’t wait to put these tips and methods to use

4:00-4:35 - I think between these timestamps, you were describing what I've heard others in the industry refer to as a "full penetration weld." I might have picked up the term from a Discovery Channel show where the camera crew was on a specialized ship that fabricated, welded & laid gas pipeline on to the seabed below. Thanks for the video. *_TRUST !!_*

The bevel is a great tip! Is 45 degrees mitre cut a stronger weld than simply welding the box section as it is?

Nice CAD template for the curve lol, getting my CAD template fix from here and project binky now!!

brilliant fab work man

Thank you, you are a great craftsman, learned very much and sparked some ideas for my current project!

Excellent work my friend!!! Thanks for sharing!!!

I like the rounded corner one. You could actually use just 1 big piece such that the rounded side is continuous, eliminating 1 weld.

G'day from West Australia, Matt😉🙂👍👍 I remember coming up with a few extra crazy looking welded bend technical on a chassis. Had the so called expert vehicle inspectors scratching there head's as to how I made such fancy Nancy bends. Never did it again cost me a whole day of my work time.🙂 But it was funny , listening to the discussions as to what kind of bending machine created such beautiful flowing curves etc.🙂 Never understood why they just didn't ask me how I did them.🙂 LMAO

How did I miss this Matt!!

very nice sir..very helpful for a beginner like me..thanks a lot

Great video, I really enjoyed it thank you very much.

Very thorough and nice work. Thank you.