Concise and to the point with 15 minutes and 53 seconds of useful information unlike the guys who bs for 10 minutes to make a 15 minute video with 5 minutes of useful information.
I have been in the Hvac business for 30 years on the repair/service/ installation side. Always had the sheet metal guys build plenums I needed. Well, for what ever the reason, they didnt like me very much and refused to teach me. So I invested in what tools I needed, similar to yours and began to learn on my own. Videos like these are a great aid to me. Thank you so much. I have been doing sheet metal on my own now for about 6 months. Your video has helped me.
@@isaiahbeanisaiahbean4525sheet metal is fun. Sheet Metal Dude utube. He’s the best and very detailed and doesn’t skip a beat and there’s no BS with him and no sick music to listen to
I’d like to see this one made out of two pieces instead of four, sans the lid, only using hand tools. You would only have to make one bend with something other than the tools shown. I can think of several ways, but seeing it done would up confidence.
you tube is cool as hell. i've been a square duct / hvac layout and installer for over 30 years.I ve installed more than several hundred hvac systems. I worked with and was taught by several old men who were sheetmetal mechanic in the 60's. But none of them ever showed me about the screen roller to make a cross brake. I would of never thought of that. Thanks for sharing. Sheetmetal fabrication is becoming a lost art. I am trying to learn all of the old ways of sheetmetal fabrication, and (tinsmithing) . I'll definetly use the screen roller to put a cross brake on my tie ins next time I change out a unit and have to field fabricate the duct work. Thanks Again
If you're not privy to the Hilti S-MS HHWH sheet metal screws, they are a serious game changer. Absolute beast for assembling ductwork. Once you use these, you'll never go back. They are more than worth the money.
Using the window screen tool to make the cross brakes is genius! I've had one of those tools hanging on my pegboard for years and it never occurred to me to use it for that. Lacking a large box & pan brake has been an obstacle but with that trick under my hat I hardly need one now.
I just made my own plenum box aided by this video and it turned out great. Very good video. I used a pizza cutter already at home for the cross breaks and it did the job perfectly. Thank you!
Fantastic video! My installer screwed up my ductwork, and is dragging his feet to come and fix it. I've called other companies, and it's too small a job for them to be interested in, so I've decided to try to fix it myself. This video is exactly what I need to do it.
Steve Lav has some pretty good sheet metal videos. He does a good job of creating sheet metal transitions to tie in the new furnace with the existing ductwork. For some reason, most of the HVAC contractors in my area love duct board but I’ve seen some real sloppy installations using that product.
Thanks why appreciate working with old heads.. they might be grumpy but you can learn a thing or two..learned all these tricks working side by side with so amazing guys
This was a very helpful video. I got a little aggravated with commenters saying this could have been done with one piece of metal. Sure it could have, but how many DIY's have a 4' metal brake to make the bends. This video showed how to make the plenum with basically common hand tools .. and the 2 foot hand bender. It sure boosted my knowledge for dealing with sheet metal. Thanks
This can be done with one piece of metal and no brake as well. If you notch each corner top and bottom of the plenum prior to bending, you can easily bend this up in one piece.Line the edge of your folding bar up with your notches Put a c-clamp or some locking pliers on each end so it doesn’t move, and bend away. OP’s way may be easier, but it’s more labor and material intensive. Try not to get aggravated next time. Some of these people are just trying to educate. Sorry if my explanation was hard to follow, everything is a little easier to teach in person/video.. 😅
Ur a great teacher. After seeing this I would snap a chalkline corner to corner and that would be my line for the ❌ to roll it out. I'm creative like that
When I was a kid, my Dad taught using thin cardboard and then used the 4ft brake to make the bends. I really enjoy it. We used to reconditioned swamp cooler and make new one from scratch - Nice video! thanks for sharing!
I’m in need of a little duct work for my powder coating booth. Was going to google the pieces that i might need. And decided to watch a video. Thanks for your video. The screen roller i already have. Plus I’m retired and wanting to learn a lot more fabrication techniques. Keep up the great teaching job. You are a teacher. Easy to learn from you without any B/S. Teach ON. Thank you so much.
"Let's do some work!"... refreshing to see a solid work ethic from this young gent. Well done, and inspiring. I need to do some work myself to modify some of the ductwork on my A/C. Kudos Sir!
One example where a DIY homeowner might find this process useful is connecting a replacement downdraft cooktop to an existing ductwork to outside. I fiddled with fittings and adapters for two days but there just wasn’t room inside the cabinet. The solution- a small plenum box built exactly as you describe here with a cutout for the fan unit on top and another cutout for the round existing exit duct on the bottom. All the parts you use are available at a nearby home center. If I had anything to ask you to add it would be the materials used to seal the box during installation.
As someone who's fairly new to the feild I appreciate you teaching the sheetmetal side of this. It's not something I have much experience with most of the plenums and hard duct usually comes in 3 pieces the "L" shaped sides and the end cap but this? I'll show the guys up one of these days at the install. Thanks for the content brother
I'm not a tradesman, just a handy home owner and I was look to make a drain pan. Your video was my next youtube suggestion. I'm not even sure what that's used for, but it's a thing of beauty and I enjoyed watching you make it. Thanks.
I'm not in the HVAC trade, so I had never seen one of those bending bars. Had to watch the rest of the video to see if there was any other life changing tools I wasn't aware of.
GREAT JOB! Nothing like RUclipsU! Thank you Professor HVAC! Had an A/C guy install a new system for me and they had the plenum built out of rigid insulation…. New system blew apart the crappy plenum. Thanks to your very well dont video I’m going to make a sheet metal plenum tomorrow. You are the first “subscribe” I’ve ever done! Now I just have to look for a video on how to attach the flexible ductwork to it and I’m golden!
I found your channel a few weeks back. I have to say that I am enjoying it and am learning a lot. I think that you would make an excellent teacher. Thank you and thumbs UP to you. 👍
Man that's beautiful work! I'm in school for HVAC now and duct class is one of my favorite ones getting to be in the sheet metal shop and doing projects
i do new construction and we have a shop guy who builds all of our plenums, transitions, mixing boxes etc but it’s still nice to learn so one day when i’m out on my own i’ll be good to go lol
I love the great content on this channel! I’m not too field experienced but 22 years in the industry on the supply side. I had questions about a lot of things the contractor goes through daily. So through your channel I have a greater appreciation for the work that you do. Thanks R
That's a nIce job! As others sometimes do, I also make a safety edge on the bottom flange. Another thing that can be done, is instead of using S cleat for the seams, you can make your own Pittsburg Locks which look far better and more rigid. The Pittsburg locks take quite a bit more time by hand though. Many guys in the field would just use the S locks as you did, but if the job was a big profit job, or for your mother or father you might spend the extra 30 minutes to an hour making those Pittsburgs. WIth good handtools and experience at it, those Pittsburgs might only take an extra 10 or 15 minutes. You have a good long bar folder on hand there I see! That helps. One thing I learned here was using that wheel to make the cross braces...very cool.
Gotta say I do hvac for a living and was very intrigued by how you did this, I’ve been blessed recently with a brake and a Pittsburg, both of which I’m still getting used to as they are old and have their own tricks, this is a very nice job almost a shame to bubble wrap it.
Those are 2 of my favorite things to use, do you layout, crossbreak, pittsburgh, bend your flanges, and then bend the 1/4 and the other half of the plenum and you'll be golden.😎👍
I’m in school learning this now. We’re using the Pittsburgh machine for our 1” and using the drives and S cleats to connect everything. I’m definitely grabbing one of those cross break tools
Hey thanks man , used your video . I just rebuilt my plenum box above my furnace to add in a new ac coil. With a back ground in machining but no exp in sheet metal it was a snap with this videos . It was just like grade 2 all over again cutting out paper shaped and glueing them togeather except the paper will cut you bone deep and the glue is s clips and c clips
Great stuff! I'm competent at most DIY but only did my own car/truck AC work. Your vids will help me add heat pumps to my workshops. Liked and Subscribed!
Almost cruised by your video, but it turned out to be very informative and easy to follow. Plenums are not standard in size and this is just what I needed to to make mine. Thanks!
We are working on this type of work in class right now. I made a seamless drain pan today. Thanks for the tips Zac. I'm pretty sure making a plenum box is one of our finals this semester.
The best way to make cross breaks in the field is a henslers bender, i made one myself and can crossbreak a piece of metal in 15 seconds. I fabricate transitions everyday, the tool is a must.
Was watching the furnace installer and was perplexed by crossbreaks. I looked away for a moment, and he was finished. I was like, I missed it? So I asked HTF did you do that? A bit hesitantly he grinned and showed how he scored it - awesome.
Nicely done I am putting in a furnace for my daughter and I am going to follow this procedure but with the first guy's 3/8 bend underneath safety flange and I will be add gasket material thanks alot very helpful 👍
Great demo. I have never made these, and your video and crisp identifications of the key tips make this an excellent video. You are great tech and excellent instructor. -- Ram, an HVAC enthusiast. And budding retirement tech.
I never worked in a sheet metal shop that had carpet lol I was taught the cardboard trick for on the fly cross breaks tho , the screen tool is a nice touch I always used a straight edge and the heaviest screwdriver I had lol
I'm a 33 year HVAC guy with a full bag with tongs, Whitney punch, bar folders, tongs, tinner hammer, panduit gun etc etc etc, and while I CAN build a box, I do every 9 years. In my opinion there are very rare boxes or ducts what are well done, and none that are as good as a fab shop. Good Pittsburgh's, furnace flanges. shoes etc mean that a fab shop with do a more professional job than a field setting 100% of the time. I can't count the boxes I've seen built with S locks. It is rare that I have to build a plenum on the fly. It's an installation environment which mean, and should imo, plan. So 99.99% of my jobs are planned and executed well through planning, which means things are fabbed.
You are absolutely right a properly measured and pre fabricated plenum is ideal however he did a pretty solid job considering only hand tools. totally useful for on the job application
Concise and to the point with 15 minutes and 53 seconds of useful information unlike the guys who bs for 10 minutes to make a 15 minute video with 5 minutes of useful information.
I have been in the Hvac business for 30 years on the repair/service/ installation side. Always had the sheet metal guys build plenums I needed. Well, for what ever the reason, they didnt like me very much and refused to teach me. So I invested in what tools I needed, similar to yours and began to learn on my own. Videos like these are a great aid to me. Thank you so much. I have been doing sheet metal on my own now for about 6 months. Your video has helped me.
I'm 19 learning ang video u can recommend?
@@isaiahbeanisaiahbean4525What would you like to know about sheet metal? I'm 20 and a 3rd yr apprentice. If you've got any questions let me know
@@isaiahbeanisaiahbean4525sheet metal is fun.
Sheet Metal Dude utube.
He’s the best and very detailed and doesn’t skip a beat and there’s no BS with him and no sick music to listen to
Hi sir
I would love to see this made into a series. Take each basic part of a solid duct system and show how to make it with basic tools.
I second this
I second this
@@igotsomespace you mean 'third this' ! 🤣
I’d like to see this one made out of two pieces instead of four, sans the lid, only using hand tools. You would only have to make one bend with something other than the tools shown. I can think of several ways, but seeing it done would up confidence.
i keep hearing S-slaw
you tube is cool as hell. i've been a square duct / hvac layout and installer for over 30 years.I ve installed more than several hundred hvac systems. I worked with and was taught by several old men who were sheetmetal mechanic in the 60's. But none of them ever showed me about the screen roller to make a cross brake. I would of never thought of that. Thanks for sharing. Sheetmetal fabrication is becoming a lost art. I am trying to learn all of the old ways of sheetmetal fabrication, and (tinsmithing) . I'll definetly use the screen roller to put a cross brake on my tie ins next time I change out a unit and have to field fabricate the duct work.
Thanks Again
thank you for jumping straight into it instead of a lot of hullabaloo at the beginning of the video :)
If you're not privy to the Hilti S-MS HHWH sheet metal screws, they are a serious game changer. Absolute beast for assembling ductwork. Once you use these, you'll never go back. They are more than worth the money.
Using the window screen tool to make the cross brakes is genius! I've had one of those tools hanging on my pegboard for years and it never occurred to me to use it for that. Lacking a large box & pan brake has been an obstacle but with that trick under my hat I hardly need one now.
To do the cross break, I lay the metal on a piece of cardboard and used the wife pizza cutting wheel! It worked great!
always been kind of intimidated by metal stuff, this gave me a bit of confidence. I want to play around with some sheet metal now.
I just made my own plenum box aided by this video and it turned out great. Very good video. I used a pizza cutter already at home for the cross breaks and it did the job perfectly. Thank you!
I was thinking about using a pizza cutter 😉
Great idea! Probably leave that one out in the shop now…. Don’t think it will be great at cutting pizza anymore 😂
wow that was so crisp and clean...you could make this into ASMR so easy...So satisfying
BAS technician here, installing my home A/C project. Watched tin knockers for years, but never really paid attention. Good tutorial, thank you!
You just save my life literally
The old house that we live in does not have a register/supply box for our furnace
Thank you so much
Fantastic video! My installer screwed up my ductwork, and is dragging his feet to come and fix it. I've called other companies, and it's too small a job for them to be interested in, so I've decided to try to fix it myself. This video is exactly what I need to do it.
These types of videos are the best ones. Teaching folks how to put things together and build ductwork at home. Keep up the great content.
Steve Lav has some pretty good sheet metal videos. He does a good job of creating sheet metal transitions to tie in the new furnace with the existing ductwork. For some reason, most of the HVAC contractors in my area love duct board but I’ve seen some real sloppy installations using that product.
DIY guy here. 👍 Learning tins from your vids.
Tryna learn more , 17 and been in it for the past 3 months , helping us out
Pros make it look easy. Back to my day job.
Thanks why appreciate working with old heads.. they might be grumpy but you can learn a thing or two..learned all these tricks working side by side with so amazing guys
This video helped a ton. Thanks man. With a little perseverance and help with people on RUclips you can do a lot.
RUclips didn’t exist when I started .
Good on you for teaching 🙏🏽🤘🏽
Thanks to this video I built a very nice and solid plenum!
Thanks for this video. I know absolutely nothing about HVAC, so its fascinating to see how its done.
This was a very helpful video. I got a little aggravated with commenters saying this could have been done with one piece of metal. Sure it could have, but how many DIY's have a 4' metal brake to make the bends. This video showed how to make the plenum with basically common hand tools .. and the 2 foot hand bender. It sure boosted my knowledge for dealing with sheet metal. Thanks
This can be done with one piece of metal and no brake as well. If you notch each corner top and bottom of the plenum prior to bending, you can easily bend this up in one piece.Line the edge of your folding bar up with your notches Put a c-clamp or some locking pliers on each end so it doesn’t move, and bend away.
OP’s way may be easier, but it’s more labor and material intensive.
Try not to get aggravated next time. Some of these people are just trying to educate. Sorry if my explanation was hard to follow, everything is a little easier to teach in person/video.. 😅
Ur a great teacher. After seeing this I would snap a chalkline corner to corner and that would be my line for the ❌ to roll it out. I'm creative like that
When I was a kid, my Dad taught using thin cardboard and then used the 4ft brake to make the bends. I really enjoy it. We used to reconditioned swamp cooler and make new one from scratch - Nice video! thanks for sharing!
THANK YOU! Greatly appreciate the minimal approach taken with hand tools and ready to tackle my first custom transition (in Philly).
Very helpful bro.
I’m in need of a little duct work for my powder coating booth. Was going to google the pieces that i might need. And decided to watch a video. Thanks for your video. The screen roller i already have. Plus I’m retired and wanting to learn a lot more fabrication techniques. Keep up the great teaching job. You are a teacher. Easy to learn from you without any B/S. Teach ON. Thank you so much.
"Let's do some work!"... refreshing to see a solid work ethic from this young gent. Well done, and inspiring. I need to do some work myself to modify some of the ductwork on my A/C. Kudos Sir!
I just made a supply plenum just like yours but different dimensions. It came out awesome. Thank you for your teaching time.
One example where a DIY homeowner might find this process useful is connecting a replacement downdraft cooktop to an existing ductwork to outside. I fiddled with fittings and adapters for two days but there just wasn’t room inside the cabinet.
The solution- a small plenum box built exactly as you describe here with a cutout for the fan unit on top and another cutout for the round existing exit duct on the bottom.
All the parts you use are available at a nearby home center. If I had anything to ask you to add it would be the materials used to seal the box during installation.
God bless you for showing us how it is done with some easy hand tools. Many thanks
I pay $90 for one already made and looking at it well It is very easy to do it it does not cost Thanks man
love the screen roller or pizza cutter idea for your cross break, genius
As someone who's fairly new to the feild I appreciate you teaching the sheetmetal side of this. It's not something I have much experience with most of the plenums and hard duct usually comes in 3 pieces the "L" shaped sides and the end cap but this? I'll show the guys up one of these days at the install.
Thanks for the content brother
Crazy how well the cross breaks turned out
Great video! I can do that myself and save money and leaned alot! Thanks so much!
I'm not a tradesman, just a handy home owner and I was look to make a drain pan. Your video was my next youtube suggestion. I'm not even sure what that's used for, but it's a thing of beauty and I enjoyed watching you make it. Thanks.
Awesome and concise. Super helpful. I have one simple 24x36x12 plenum to building and didn't want to get an HVAC outfit in just to build that.
I'm not in the HVAC trade, so I had never seen one of those bending bars. Had to watch the rest of the video to see if there was any other life changing tools I wasn't aware of.
Love the tip on the screen roller to make cross brakes, great idea ( someone was thinking when they came up with that idea)👍🛠.
GREAT JOB! Nothing like RUclipsU!
Thank you Professor HVAC!
Had an A/C guy install a new system for me and they had the plenum built out of rigid insulation…. New system blew apart the crappy plenum. Thanks to your very well dont video I’m going to make a sheet metal plenum tomorrow.
You are the first “subscribe” I’ve ever done!
Now I just have to look for a video on how to attach the flexible ductwork to it and I’m golden!
Sounds more like your new system is 6 sizes too big.
I found saving my cardboard underneath my sheet metal helps make the cross breaks.
Awesome work Zach. Makes people who are Not confident definitely more confident in doing that stuff.
Zach. One of your best videos yet. I learned some great tips. Thank you!
Great job Zack. Thank you so much for that class. Respect from NYC.
I found your channel a few weeks back. I have to say that I am enjoying it and am learning a lot. I think that you would make an excellent teacher. Thank you and thumbs UP to you. 👍
Man that's beautiful work! I'm in school for HVAC now and duct class is one of my favorite ones getting to be in the sheet metal shop and doing projects
i do new construction and we have a shop guy who builds all of our plenums, transitions, mixing boxes etc but it’s still nice to learn so one day when i’m out on my own i’ll be good to go lol
First time seeing how to do sheet metal .. you made that look easy!.. Great Job I would like to see more with the basic tools also .😁
I love the great content on this channel!
I’m not too field experienced but 22 years in the industry on the supply side. I had questions about a lot of things the contractor goes through daily. So through your channel I have a greater appreciation for the work that you do.
Thanks
R
That's a nIce job! As others sometimes do, I also make a safety edge on the bottom flange. Another thing that can be done, is instead of using S cleat for the seams, you can make your own Pittsburg Locks which look far better and more rigid. The Pittsburg locks take quite a bit more time by hand though. Many guys in the field would just use the S locks as you did, but if the job was a big profit job, or for your mother or father you might spend the extra 30 minutes to an hour making those Pittsburgs. WIth good handtools and experience at it, those Pittsburgs might only take an extra 10 or 15 minutes. You have a good long bar folder on hand there I see! That helps. One thing I learned here was using that wheel to make the cross braces...very cool.
That roller idea will save tons of money and time. Thank you Zach!
Gotta say I do hvac for a living and was very intrigued by how you did this, I’ve been blessed recently with a brake and a Pittsburg, both of which I’m still getting used to as they are old and have their own tricks, this is a very nice job almost a shame to bubble wrap it.
Those are 2 of my favorite things to use, do you layout, crossbreak, pittsburgh, bend your flanges, and then bend the 1/4 and the other half of the plenum and you'll be golden.😎👍
You bought your own Pittsburgh machine ? :0
I recently installed a new furnace and had to rebuild the plenum between the furnace and A coil. This video was a huge help! Thanks
I’m in school learning this now. We’re using the Pittsburgh machine for our 1” and using the drives and S cleats to connect everything. I’m definitely grabbing one of those cross break tools
One craft closer to making my spaceship. Thanks
Clean can Zach.. nice tip on the roller for the cross break!
Thanks for sharing. The screen tool trick is great. Big help for me right now. Great explanation on how to assemble.
Go to harbor freight and get their 3' brake with stand, about 250 bucks. Worth every penny and have used it for years!!!
I just ordered a roller, that’s fucking sick. Besides my journeyman, you’re the only guy I’ve ever seen cross break plenum panels lol
Hey thanks man , used your video . I just rebuilt my plenum box above my furnace to add in a new ac coil. With a back ground in machining but no exp in sheet metal it was a snap with this videos .
It was just like grade 2 all over again cutting out paper shaped and glueing them togeather except the paper will cut you bone deep and the glue is s clips and c clips
Thank you for the time that you take to make this video you are a........ beast 💪👍
Great stuff
Great stuff! I'm competent at most DIY but only did my own car/truck AC work. Your vids will help me add heat pumps to my workshops. Liked and Subscribed!
Thank you! My first came out perfect because of this video.
You're a good teacher.
Sweet got a new furnace installed and need a plenum. Even easier than autobody 😆 all I need is a folding tool. Screen tool was awesome idea
Subscribed. This vid is very helpful for me as a newbie in ductworks.
Almost cruised by your video, but it turned out to be very informative and easy to follow. Plenums are not standard in size and this is just what I needed to to make mine. Thanks!
My ears really appreciate people that bought the surge m12 instead of the normal one.
We are working on this type of work in class right now. I made a seamless drain pan today. Thanks for the tips Zac. I'm pretty sure making a plenum box is one of our finals this semester.
Which school do you attend if you don’t mind me asking?
@@markanthonyrogel8221 it's a technical college in Kentucky.
@@b-2466 is Herman your teacher ?
I tried making a seamless pan just could not pull it off. Not sure what I was doing wrong.
@@daveg8918 no, don't know any herman. Mine is Keithen.
This is the best one I have ever seen. Thank you!
That was very easy and simple sir thank you
That’s a good tip on the screen roller going to add one to my tin box
Nice. I appreciate the fabrication guys I use occasionately ever more highly. And,..., I am going to follow your lead and build one for fun. Tahnks.
Good work.
that little roller a damn good idea for a cross brake.
Very professional ,very detailed ...I wish you in my town.Thanks for a video
I made it all the way through the video then decided that I better google “what is a plenum box” 😂
Lol.. it’s all In the AIR
Hopefully you're getting smarter every day.
Same
@@embracethesuck1041 ?💀
🤣🤣🤣
The best way to make cross breaks in the field is a henslers bender, i made one myself and can crossbreak a piece of metal in 15 seconds. I fabricate transitions everyday, the tool is a must.
Was watching the furnace installer and was perplexed by crossbreaks. I looked away for a moment, and he was finished. I was like, I missed it? So I asked HTF did you do that? A bit hesitantly he grinned and showed how he scored it - awesome.
A Phillips Screwdriver will work also.
Nicely done I am putting in a furnace for my daughter and I am going to follow this procedure but with the first guy's 3/8 bend underneath safety flange and I will be add gasket material thanks alot very helpful 👍
That is F-ing beautiful work of art thank you I will use that knowledge to the best of my ability
Great demo. I have never made these, and your video and crisp identifications of the key tips make this an excellent video. You are great tech and excellent instructor. -- Ram, an HVAC enthusiast. And budding retirement tech.
I like that roller for cross breaks, I always used a thick screw driver which works, but the roller is a much better way to do it.
Just came across this video....good stuff. Aways wondered why those lines/crease were in those
Great work particularly out in the field away from machinery!
Fantastic tip using a screen tool to crimp an X brace. Thanks.
Great tip on Roos hatch
I’ve tried soo many things but can’t wait to use that tool
Thanks!
The cross break tip!! Thank you!!
I never worked in a sheet metal shop that had carpet lol I was taught the cardboard trick for on the fly cross breaks tho , the screen tool is a nice touch I always used a straight edge and the heaviest screwdriver I had lol
I was looking for something ales,
I found your video, THANKS
It is good
Great tip with the screen tool!!!
Great job brother! Sheet metal work is something I would like to get good at.
Usually takes talent; watch out those power brakes; I knew a guy who lost his 8 fingers; he was all thumbs!
Really nice work. It's cool to see tips from people that know their trades well.
Really like your hand brake. Great idea.
I’m getting a roller ASAP. I’ve been using a flat head screwdriver with the Barfold to score the cross breaks for years. This looks easier and cleaner
Yeah for sure we have been doing that stuff all wrong.
I'm a 33 year HVAC guy with a full bag with tongs, Whitney punch, bar folders, tongs, tinner hammer, panduit gun etc etc etc, and while I CAN build a box, I do every 9 years. In my opinion there are very rare boxes or ducts what are well done, and none that are as good as a fab shop. Good Pittsburgh's, furnace flanges. shoes etc mean that a fab shop with do a more professional job than a field setting 100% of the time. I can't count the boxes I've seen built with S locks. It is rare that I have to build a plenum on the fly. It's an installation environment which mean, and should imo, plan. So 99.99% of my jobs are planned and executed well through planning, which means things are fabbed.
You are absolutely right a properly measured and pre fabricated plenum is ideal however he did a pretty solid job considering only hand tools. totally useful for on the job application
@@stevetranchida7610 I can't disagree with that.